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Lisa Feldman Barrett: Top Neuroscientist: Anxiety Is A Predictive Error In The Brain! Heres The Proof Your Brain Is Faking Trauma! Your Whole Life Might Be A Prediction!

第2025-04-17期2025-04-17English

嘉宾:Lisa Feldman Barrett

Top Neuroscientist: Anxiety Is A Predictive Error In The Brain! Heres The Proof Your Brain Is Faking Trauma! Your Whole Life Might Be A Prediction!
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§01Transcript — part 1

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00:59There are these experiments where they trained people to experience anxiety, but as determination.

01:04Because exactly the same physical state could be experienced completely different.

01:09And what they discovered is that at first it's really hard, but you practice, practice, practice, and then eventually it becomes really automatic.

01:15So the first thing to understand is that...

01:18Dr.

01:18Lisa Feldman Barrett is a world-leading neuroscientist.

01:21Her groundbreaking research reveals that emotions like anxiety and trauma are built by the brain.

01:26And we have the power to control them.

01:28The story is that you're born with these innate...

01:30Nay, emotion circuits.

01:31But you're not born with the ability to control them.

01:33That's false.

01:34Really what's happening is that your brain is not reacting, it's predicting.

01:38And every action you take, every emotion you have is a combination of the remembered past, including any trauma.

01:46And so you don't have a sense of agency about it because it happens really automatically, faster than you can blink your eyes.

01:52How does this change how we should treat trauma?

01:55Sometimes in life, you are responsible for changing something, not because you're to blame, but because you're the only person who can.

02:03I mean, I had a daughter who was clinically depressed, was getting Ds in school.

02:07She wasn't sleeping.

02:08She was miserable.

02:09At first, she was so resistant.

02:11But then she made the decision that she wanted to be helped.

02:14And did she recover?

02:15Yes, she did.

02:16So if you want to change who you are, what you feel, understanding these basic operating principles is the key to living a meaningful life.

02:24So what is step one to being able to make that change?

02:27So...

02:30Quick one before we get back to this episode.

02:32Just give me 30 seconds of your time.

02:34Two things I wanted to say.

02:35The first thing is a huge thank you for listening and tuning into the show week after week.

02:40It means the world to all of us.

02:41And this really is a dream that we absolutely never had and couldn't have imagined getting to this place.

02:46But secondly, it's a dream where we feel like we're only just getting started.

02:50And if you enjoy what we do here, please join the 24% of people that listen to this podcast regularly and follow us on this app.

02:58Here's a promise I'm going to make to you.

02:59I'm going to do everything in my power to make this show as good as I can now and into the future.

03:05We're going to deliver the guests that you want me to speak to.

03:07And we're going to continue to keep doing all of the things you love about this show.

03:11Thank you.

03:12Thank you so much.

03:13Back to the episode.

03:17Dr.

03:18Lisa Feldman Barrett, you have a really remarkable, twisting career journey.

03:26It's almost quite difficult to encapsulate in a particular mission or a particular summary of the journey you've been on and the twists and turns you've taken.

03:35But if I were to ask you now what mission you're on with the work that you're currently doing, are you able to summarize that?

03:44My goal is, as a science communicator, is to try to take really complicated science and present it in a way that people can use.

03:53You know, maybe they use it to entertain their friends at a dinner party.

03:57Maybe they use it to...

03:59help their kid who's, you know, struggling with depression.

04:02That was certainly, in my case, something that I had to deal with.

04:06Maybe they're using it to improve their workplace or improve the productivity of their peeps or whatever.

04:14The point being that that's ultimately, that's what science is for.

04:18It's for...

04:19You know, living a better life.

04:22And average everyday people without PhDs can do that if they have the right information.

04:31I'm probably attempting to understand how it is that a brain like ours that is attached to a body like ours

04:41that is pickled in a world like ours, produces a mind.

04:47What is it?

04:49What is happening that allows you to have thoughts and feelings and memories and actions?

04:59And somebody from another country, another culture, also has a mental life which looks nothing like yours.

05:08How is it that the same kind of brain plan with the same general kind of body plan can produce such different types of minds when they are...

05:19When those brains are wired, in a sense, finish wiring themselves in cultural and physical contexts that are so widely different.

05:29When you just talked about your pursuit of understanding how a brain like ours

05:35creates the mind and the reality that we have, if I'm able to understand all of that, as many people who read your book about the brain and emotions were able to understand, what is it that it offers me in my everyday life?

05:47Oh my God, it offers you the opportunity to have more agency in your life.

05:51And what does that mean?

05:52It means you have more choice.

05:53It means you have more control.

05:55It means that you can architect your life.

05:57I mean, you can't control everything that happens to you.

06:00You can't control every moment of feeling.

06:04But you have more control than you probably think you do.

06:07Everybody has more control.

06:09Over what they feel and what they do than they think they do.

06:13That control doesn't look the way we expect it to.

06:18It's much harder to harness than we would like it to be.

06:23Some people have more opportunities for that control than other people do, but everybody has the opportunity to have more control.

06:33And of course, the flip side is also more responsibility for the way they live their lives.

06:40And I think that's a really good thing.

06:43And I think it's a really good thing now when, you know, world events are swirling around you and you feel like, you know, you're just being buffeted around.

06:52Even within that craziness, there are opportunities to...

06:59to be more of an architect of your own experience and your own life.

07:04I think a lot of people find that optimistic and helpful.

07:11Yeah, because life can feel like we are a puppet and we are just responding to what happens around us.

07:16And if it rains outside, then we're sad.

07:20Person sends us a message, then we're annoyed.

07:22And that we're just these sort of reactive creatures reacting to whatever happens around us.

07:26But you're telling me that if I have a greater understanding of the brain and how it works and emotions, then I can seize back some of that control and live a more intentional life.

07:34Yes, exactly.

07:35And I think for me, I mean, I started...

07:39I started my career studying the nature of emotion, but really it became a flashlight into understanding how a brain works.

07:49Why do we even have a brain?

07:51It's a very expensive organ.

07:53That piece of meat between your ears is the most expensive, metabolically the most expensive organ you have.

08:00So what's it good for?

08:02What's its most basic function?

08:04How does it work in relation to the body?

08:08I think that certainly on your show, you've had a number of people who talk about the relationship between the brain and the body in some way.

08:15But I think scientists for a long time.

08:18Forgot or ignored the fact that the brain is attached to a body, right?

08:24Because we don't feel all the drama.

08:26Like right now, in you, in...

08:29me and all of our listeners, right?

08:31We all have this like drama going on.

08:34It's really quite intense and there's a lot of going on and none of us are aware of it, I hope.

08:39If you are aware of it, I'm really sorry.

08:41It probably means that something is, you know, you're not feeling well today.

08:46But it's a good thing that we're not aware of what's going on inside our own bodies most of the time because we'd never pay attention to anything outside our own skin again, right?

08:54But the problem is that in science, it often begins with starting with your own subjective experience and then trying to formalize that.

09:01And I mean, if you look at any science, physics is like that, too.

09:04You just have to go back several hundred years or maybe a little longer to see it.

09:09And so it turns out that a lot of what you experience.

09:13As properties of the world, of the way the world is, really is very rooted in your brain's regulation of your body.

09:21And so I guess I started with emotion, but it really became a much larger project to try to understand, well,

09:30What is a brain?

09:31How is it structured?

09:32How did it evolve?

09:33How does it work?

09:34What's its most basic function?

09:37And where do thoughts and feelings and actions, perceptions, what role do they play in that function?

09:44So it's a bit flipping the question, right?

09:47Most people start with, what is an emotion?

09:50What is a thought?

09:51What is a memory?

09:52They define it, and then they go looking for its physical basis.

09:56In the brain or in the body.

09:59That's a pretty bankrupt perspective.

10:02I mean, after 100 years, there weren't really good answers.

10:06So we flipped it around and we said, okay, well, given that we have the kind of brain we do, what can it do?

10:15What does it do?

10:17And in its normal functioning, how does it produce mental events?

10:21That in our culture, our thoughts and feelings and perceptions and actions, in other cultures, they're different conglomerations of features, right?

10:30So for us, a thought and a feeling are super distinct.

10:35We experience them as very separate.

10:37In fact...

10:38Really, since the time of Plato, we've had this kind of narrative where, you know, the mind or the brain is a battleground between your thoughts and your feelings, right?

10:48In for control of your action.

10:50If your thoughts win, you are a rational creature.

10:54You are a healthy creature.

10:57You are a moral creature.

10:59If your instincts and your emotions win, you know, your inner beast, then you are irresponsible.

11:06You are childish.

11:07You are immoral.

11:09You are mentally ill.

11:11That's the narrative that we work in.

11:13In some cultures, thoughts and feelings are not separate.

11:18They are really...

11:20It's not that you have them at the same time.

11:22It's that they are one thing.

11:24They are features of the same mental event.

11:29cultures, your body and your mind are not separate.

11:33There are no separate experiences for a physical sensation versus a mental feeling.

11:39They're really one thing.

11:40So our minds are not the human nature.

11:44It's just one human nature.

11:45And there are other human natures too.

11:48And we have to figure out how

11:50general brain plan, a general body plan for a neurotypical human, produces such wide variation depending on the cultural context in which it grows.

12:03As it relates to neuroscience and understanding the brain and the way that we create reality, was there a eureka moment for you where you realized that

12:11Most of us have it wrong.

12:14Or that there's an underlying misconception about the way that our brain creates our reality.

12:19I would say, yeah, sure, there was a eureka moment, but it was a long, slow burn.

12:25When I was a graduate student, I wasn't studying emotion.

12:28I was studying...

12:31The self.

12:33How do you think about yourself?

12:35What is your self-esteem like?

12:37How do you conceive of yourself, right?

12:40This is an important topic in psychology.

12:43And I was measuring emotion as an outcome variable, and the measurements weren't

12:51The measures weren't working.

12:53And I thought, well, I need to be able to just literally, objectively measure when someone is

12:59angry or when they're sad or when they're happy.

13:02I don't want to have to ask them because they could be wrong.

13:05And in that phrasing of the question, there's a presumption, right, that there is an objective state called anger, that generally most instances of anger will look the same regardless of person and context.

13:18And

13:19I very quickly realized that there are no essences that anybody's been able to discover, right?

13:28So recently, in the last couple of years, researchers did a meta-analysis, which is a big statistical summary of hundreds and hundreds and hundreds of experiments.

13:39And what they discovered is that

13:41And this is just in urban cultures, right?

13:44We're not even talking about remote cultures now.

13:47Just in urban cultures, when someone is angry, people scowl about 35% of the time when they're angry.

13:54A scowl is like a...

13:55Like a scowl, like a...

13:57Right.

13:57Like, you know, you knit your eyebrows, you frown, right?

14:01So it's...

§02Transcript — part 2

14:02Okay.

14:03But that means 65% of the time when people are angry, they're doing something else that's meaningful with their face.

14:10And half the time when people scowl, they're not angry.

14:14They're feeling something else.

14:16They could be concentrating really hard.

14:18You could have just told them a bad joke.

14:20They could have a bad bout of gas.

14:24You know, a scowl is not the expression of anger.

14:27It is an expression.

14:29of anger in some contexts, and it's also an expression of other states in other contexts.

14:37So what this means is that, you know, there's no really strongly reliable expression for anger that is specific to anger.

14:47And the same is true for every other emotion that's ever been studied.

14:51It's really clear that you're in anger or sadness or pick an emotion, you know, your heart rate can go up, it can go down, it can stay the same.

14:58Your blood pressure can go up, it can go down, it can stay the same.

15:02The physiology that is occurring in your body is related to the...

15:07Your brain's preparation for particular behaviors.

15:10So let's start with that then.

15:11So the predictive brain is this idea that I only pretty much know from you.

15:16I'd never heard it before.

15:17When we say the predictive brain, what does that mean?

15:21And what does it not mean?

15:23So when you are living your everyday life.

15:27Yeah.

15:28Like right now.

15:28Like right now.

15:29So right now, I'm guessing that I'm saying things to you and you're perceiving what I'm saying and then you're reacting to it.

15:38That's how it feels to you, right?

15:40Yes.

15:40Okay.

15:41And that's how it feels to me too.

15:43So we sense and then we react.

15:46That's the way most people experience themselves in the world.

15:51That's not actually what's happening under the hood.

15:54Really what's happening is that the brain, your brain is not...

15:59reacting, it's predicting.

16:01And what that means is if we were to stop time right now, just freeze time, your brain would be in a state and it would be remembering

16:15past experiences that are similar.

16:19To this state as a way of predicting what to do next, like literally in the next moment.

16:27Should your eyes move?

16:29Should your heart rate go up?

16:31Should your breathing change?

16:33Should your blood vessels dilate or should they constrict?

16:36Should you prepare to stand?

16:39Right?

16:39Movements.

16:40And these movements, the preparation for movement, literal copies of those

16:47signals become predictions for what you will see and hear and smell and taste and think and feel.

16:57So under the hood, your brain is predicting what movements it should engage in next, and as a consequence, what you will experience because of those movements.

17:10So you act first and then you sense.

17:15You don't sense and then react.

17:17You predict action and then you sense.

17:23So give me an example which brings this to light of how my brain is predicting.

17:29Then taking action.

17:30Okay.

17:31So right now you and I are having a conversation and I'm speaking and you're listening.

17:38And what's really happening in your brain is that based on...

17:47Many gazillion repetitions of listening to language, your brain is predicting, literally predicting every single word that will come out of my

18:05Yeah, okay.

18:07And how surprising would it have been if I didn't say mouth, I said some other orifice of my body that words were coming out of.

18:15That would have been pretty surprising.

18:18Because your brain is predicting that.

18:21Your brain is always predicting.

18:23And it's correcting those predictions when they're incorrect.

18:29And, you know, I have this video that I often show when I'm giving a talk to scientists or to civilians.

18:37I'm giving a talk and it creates a situation where they can predict something and they can feel that a prediction is not just this abstract kind of thought.

18:51It's your brain is...

18:53Is literally changing the firing of its own sensory neurons to anticipate incoming sensations.

19:01So you start to feel these sensations before the signals actually arrive for you to perceive them.

19:09You start to have the experience before the world gives you those signals.

19:14I've read, I think it was in your book, but it might have been elsewhere, about the example of being thirsty.

19:19Yes.

19:20So when you drink, so say you're super thirsty and you drink a big glass of water, when do you stop being thirsty?

19:31Almost immediately.

19:33But actually, it takes 20 minutes for that water to be absorbed into your bloodstream and make its way to the brain to tell the brain that you are no longer in need of fluid.

19:46Because across millions of opportunities, you have learned that certain movements now and certain sensory signals now will result in that mental state.

20:01Or here's another example.

20:04So right now, keep your eyes on me.

20:06You're looking right at me.

20:07And in your mind's eye, I want you to imagine a Macintosh Apple, like not a computer, but like an actual piece of fruit.

20:17Okay.

20:17Can you do it?

20:18Can you see it?

20:19Yeah.

20:21What color is it?

20:22Green.

20:22Okay.

20:23Does it have any red?

20:24No.

20:25Okay.

20:25So it's a Granny Smith apple.

20:27Yeah.

20:28Okay.

20:28What does it taste like?

20:30Like imagine grabbing it.

20:33Yeah.

20:34Biting into it, hearing the crunch of the apple.

20:37What does it taste like?

20:39It's like sweet.

20:41It's like a little tart, maybe?

20:42Yeah, yeah.

20:42Yeah.

20:43Is it juicy?

20:43It's very juicy.

20:44Yeah.

20:45Okay.

20:45So if I were imaging your brain right now, what I would see is I would see changes in the signal that is related to neural activity in your visual cortex, even though there is no apple in front of you.

20:58And I would see a change in activity in your...

21:03auditory cortex, even though you didn't really hear the crunch.

21:07My mouth was watering as well.

21:08And your mouth is watering.

21:10And in fact, every time you sit down for a meal, your brain directs your saliva glands to produce more saliva to prepare you to eat and digest the food.

21:24So that usually happens in advance of even sitting down to a meal.

21:29That is all prediction.

21:31That's all of that is your brain preparing itself for what's coming because predicting and correcting is a much more efficient way to run a nervous system, really any system, than reacting to the world.

21:47Here's another example.

21:48Do you drink coffee?

21:49Yes.

21:50Okay.

21:51Do you drink coffee every day at the same time?

21:53Usually, yeah.

21:54Okay.

21:55And are you one of these people that if you miss having coffee at that time, you get a headache?

22:01I mean, it's happened before.

22:02Yes.

22:03Well, I used to be a person who drank a lot of coffee.

22:07And I love coffee, but I don't drink it anymore.

22:10But I loved it, and I drank it always at the same time every day.

22:14And if I didn't drink it, I would get, at that time of day, I would get a massive headache.

22:21And the reason why, and this is true of every medicine you take, anything which affects your physiology, if you do it on a regular basis, your brain will...

22:31Come to

22:32expect it.

22:33And what that means, come to expect it, is that coffee has chemicals in it that will constrict your blood vessels everywhere.

22:44But in the brain, the brain is attempting to keep the blood flow pretty...

22:51Constant and even.

22:53And so if every day at eight o'clock in the morning, you're drinking something that's going to constrict your blood vessels, then at 7.55 approximately, I don't know the exact timing, but a little bit before,

23:07you know, eight, your brain will dilate the blood vessels.

23:12In preparation for that constriction so they remain constant.

23:16And if you don't drink that substance, then you have this big dilation and you get a very, very bad headache.

23:24I was just wondering then about, as you were talking, I thought you were going to talk about how sometimes when I set an alarm, I seem to wake up like five minutes before the alarm.

23:32Yeah, sure.

23:32That's an example.

23:33Here's another example.

23:35Exercise.

23:36Okay.

23:37If you want to play tennis better, if you want to run a faster mile, what do you do?

23:44Train.

23:45Train.

23:45And you do the same thing over and over and over and over again.

23:49And you get better and faster.

23:51And you burn fewer calories.

23:52You get more efficient.

23:53Why?

23:54Because your brain is predicting really well.

23:57That's what muscle memory is.

23:58It's not literally a memory in your muscles.

24:01It's a memory in your muscles.

24:02Your brain is controlling your muscles.

24:05And so if you practice the same set of movements over and over and over again, you just get really efficient at them because your brain is able to predict better.

24:16Now, if you're somebody who's exercising because you want to become healthier or you want to lose weight,

24:23you don't want to practice the same exercise over and over and over again because you will be burning fewer calories because you're being efficient.

24:32That's the goal, right?

24:34So instead, you do interval training, right?

24:37If somebody's calling out to you every 30 seconds a different set of movements and you can't predict what they are.

24:43Then your brain will make a prediction.

24:46It'll be wrong.

24:48You'll have to adjust.

24:49And so you end up burning more calories and you end up throwing yourself out of balance, which we call allostasis.

24:56So you become dysregulated and then your brain has to work to get itself back in again.

25:01And so that's a different kind of workout.

25:04These two different kinds of workouts are completely predicated on the fact that sometimes you want to be able to predict better.

25:11Sometimes you want to be able to disrupt yourself and get back into the pocket quickly, right?

25:18So basically you're learning how to...

25:21Take in prediction error, things, signals you didn't predict, and adjust to them.

25:28What does this say about the nature of trauma?

25:32other mental health illnesses like depression, anxiety, etc.

25:36Because is this a misfiring of my predictions?

25:39I say this because predictions reliant on something happening in the past and forming a pattern, like a pattern recognition system.

25:46So if I grew up and there were certain patterns that are now...

25:51Not the case.

25:51So if I grew up and every time a man walked into the room, he hit me.

25:55And now when a man walks into the room and I'm 35 years old, I'm getting that same sort of prediction in my brain.

26:00So I've got a fear of men, for example.

26:03Does this somewhat explain childhood trauma and why it's so hard to shake and why as adults we can sometimes have dysfunctional lives?

26:13I would say as a general principle, yes.

26:18There are a lot of, you know, the devil is in the details, right?

26:21But yeah, sure.

26:23So trauma is not something that happens in the world to you.

26:29Everything you experience is a combination of the remembered past and the sensory present.

26:34So there could be an adverse event that occurs.

26:36You're in an earthquake.

26:38Someone dies who's close to you.

26:41Something bad happens to you.

26:43Someone hurts you in some way.

26:46There could be an adverse event that is not traumatic to you because...

26:52You're not using past experiences to make sense of it as a trauma.

26:59On the other hand, something that is...

27:02could be like an everyday experience to somebody else, to you, it links to a set of memories that are very traumatic, were very traumatic.

27:14Those events were very traumatic.

27:16And so to you, it is a trauma.

27:19So trauma is not an objective thing in the world.

§03Transcript — part 3

27:22It's also not all in your head.

27:24It's a relation.

27:25Trauma is a property of the relation between what has happened to you in the past and what is occurring in the present.

27:32So here's an example.

27:34There is an anthropologist who works at Emory University, and she studies people in a lot of different cultures, and she studies trauma in a lot of different cultures.

27:45And there was this one girl that she wrote about, a case study of a girl named Maria.

27:52Who was a young adolescent girl.

27:55And she lived in a culture where it was more normative for men to physically, be very physical with women and girls.

28:11So...

28:12In our culture, we would say it's physical abuse.

28:16But in her culture, this is just what men did.

28:19So her stepfather would slap her around, and she didn't like it, but she didn't show any sign of trauma.

28:29The way she made sense of it was that men are just assholes.

28:33It was very much a, this is not about me.

28:36This is about them.

28:38It's not pleasant, but she slept okay.

28:41Her grades were okay in school.

28:44She had friends.

28:45She didn't have any signs of trauma at all.

28:50Then she watched Oprah.

28:53And she heard all of these women talk about having been the subject of physical abuse from their boyfriends or their fathers or, you know, their husbands.

29:08And she recognized the similarity in...

29:14The physical circumstances of these women's descriptions and her physical circumstances.

29:21And she also observed them experiencing symptoms of trauma.

29:30And all of a sudden, she started to...

29:34Have difficulty sleeping and she, her grades dropped and she had trouble concentrating and she became socially withdrawn.

29:43Her way of making meaning, her way of, if you think about physical

29:51movements as actions, she made different meaning of those actions, and she experienced trauma where she didn't before.

30:03Now, if you're somebody who believes that there is an objective world out there where, you know...

30:10Cause and effect.

30:11Yeah, that really there was some kind of latent trauma in her and she didn't experience it before, but then it was like triggered and then she'd be...

30:20You could tell a whole story like that and people do tell whole stories like that.

30:24But that's not what the best scientific evidence suggests is happening.

30:29What's happening is that the physical...

30:33Movements were the same, the psychological experience of those movements was different.

30:39Because experience is a combination of the sensory present, the physical present, and the remembered past.

30:50And you need both.

30:53In order to have a particular kind of experience.

30:56So the way to describe what happened to Maria's trajectory was that she experienced something

31:04as an unfortunate aspect of like physical life, and then it became about her.

31:13It became something, not this person was doing something bad, but this person was doing something bad to her because of who she is.

31:22And she was also shown how she should be responding to that by watching Oprah's show and watching these other individuals responding in a certain way.

31:29Right.

31:29So it became about...

31:32her as a person, not just about, you know, her stepfather was an asshole.

31:37And if you think about it, what we do in this culture when people go into therapy for trauma, right, is we're attempting to actually reverse the narrative.

31:47So we try to teach people that it's not when something traumatic happens to them.

31:54And I want to be really clear what I'm saying, right?

31:57I'm not saying that when people experience trauma, it's their fault.

32:02I'm not in any way saying they're culpable for what's happened to them.

32:07But sometimes in life, you are responsible for changing something.

32:14Not because you're to blame, but because you're the only person who can.

32:21The responsibility falls to you.

32:24And so in this culture, we try to teach people who've experienced trauma that they can experience those physical events that happened to them in the past.

32:34In some other way.

32:37And when they do, they no longer feel traumatized anymore.

32:42My mind's a little bit blown for a number of different reasons, because it's a real paradigm shift to think that we are giving meaning to the thing that happened in our past.

32:50And sometimes that meaning is coming from watching other people give it meaning.

32:54And we're inheriting that meaning that...

32:56Oh, yes, that's called cultural inheritance.

32:58It's like a cultural, it's like a contagion.

33:01So.

33:02It turns out that, you know, there's one kind of old evolutionary theory, right?

33:08This is called the modern synthesis, where inheritance is really your genes.

33:13You inherit, whatever you inherit, you inherit by your genes, and then natural selection, you know, chooses some gene patterns and not others.

33:23And that's really how inheritance works across generations.

33:29Most evolutionary biologists don't hold to that view anymore because for the most part, there are many, many ways to inherit things.

33:38And a lot of what we think of as inheritance is really more what's called epigenetic, meaning it doesn't really involve DNA very much.

33:47And I would say the way I like to say it is that we have the kinds of nature that requires a nurture.

33:54We have the kind of genes that require experience.

33:58Before anything is wired into our brains.

34:01And most of our characteristics work that way.

34:04Very few characteristics work just by genes alone.

34:08What always happens in a neurotypical brain is that you're born with your brain incomplete, right?

34:16An adult brain has, we say that it's wired to its world.

34:21That world includes your own body.

34:25But a baby's brain is not a miniature adult brain.

34:30It's a brain that's waiting for wiring instructions.

34:32from the world and from its own body.

34:35So your brain is wired for you to see out of eyes that are the exact distance of your eyes from each other.

34:44If somehow, you know, magically we could transplant your brain into somebody else's skull, you would not be able to see out of that skull.

34:52You would not be able to see out of those eyes because they're not in the right place.

34:56You hear...

34:58With ears, your ability to hear comes from signals that are shaped by the shape of your ear.

35:06So your brain is wired to hear out of these ears, not any ears, these ears.

35:13Similarly, you, as a baby, you are taught the meanings of physical signals.

35:20You're taught how to make sense of these things.

35:22That's called cultural inheritance.

35:25Many things that we think of as hardwired into the brain are actually culturally inherited across generations.

35:34That's how people survive in a particular...

35:38environment.

35:39So like in the 1800s and 1900s, when explorers would go off and they would go off to Antarctica or here or there, and they would very quickly die.

35:49The Inuit lived there.

35:50They lived perfectly fine.

35:51Well, because they had culturally inherited knowledge.

35:54We're always transmitting

36:00knowledge to each other.

36:02And that knowledge becomes fodder for our own predictions.

36:08So your predictions don't just come from your personal experience.

36:13They also come from you watching television, you talking to guests, you reading books, watching movies.

36:21Also, your brain...

36:23Like most human brains can do something really fantastic, which is

36:29you can take bits and pieces of past experience and put them together in a brand new way so that you can use the past to experience something new that you've never experienced before.

36:43You talked a second ago about therapists try and make you think about the past differently.

36:48But I do think there's an underlying belief in our culture and society and on social media that if something happens to you, almost like this Freudian approach of if this happens to you, this is who you become.

37:00And I was reading that book, The Courage to be Disliked, over Christmas.

37:03And it kind of...

37:05It changed my view on this quite profoundly in an important way because it helped me to understand.

37:11I think it basically says that what happens to us doesn't create who we are.

37:15We use what happened to us and we apply meaning to it, which then determines the behavior we have.

37:20And really interestingly in that, it means that many of the beliefs I have about myself, who I say I am, my identity, and therefore like the ways that I behave every day, whether they're productive or unproductive, are actually just...

37:33choices I've made to apply meaning to the past.

37:37Does that make sense?

37:38It completely makes sense.

37:40And this is really, this is such like a profound, I don't know if whoever's listening now understands what I'm saying here, but we said at the start of this conversation, you go through life thinking you're a puppet and you're being controlled by what happened to you, who you are, your identity.

37:53But actually, your identity is just this...

37:56This construction of

38:00meaning that you've given to the past.

38:02To serve your purpose now, as it says in the book.

38:05Yes, I would say it slightly differently, but the message is the same.

38:09I think there are, in the sensory present, right, there are sights, there are sounds, there are smells, some stuff's going on inside your own body, right?

38:21And these signals are going to your brain.

38:25They have no inherent...

38:27Psychological meaning.

38:28They have no inherent emotional meaning.

38:30They have no inherent mental meaning.

38:33What gives them meaning?

38:38Are your memories from the past.

38:40You are creating, you are a meaning maker.

38:44Meaning isn't a set of features like a dictionary definition.

38:48So the meaning of this cup isn't that it's made of metal and that, I mean, we certainly can talk about those features, but...

38:58The meaning of this cup in this moment is what I do with it.

39:02So it could be a vessel for drinking.

39:04It could be a weapon.

39:06It could be, you know, a flower holder.

39:09It could be a measuring cup.

39:12The meaning of the vessel is what I do with it in the moment.

39:19That's its meaning.

39:21And so the meaning of the vessel isn't in the vessel.

39:27And it's also not only in my head.

39:30The meaning is the transaction.

39:32It's the relationship between the features of this vessel, this object, and the signals in my brain, which are creating my actions.

39:44In fact, even the fact that this is a solid object...

39:49The property of solidity is not in the object.

39:54It's because I have a body of a certain type with certain features that makes me experience this as solid.

40:03The solidity isn't in me and it's not in the object.

40:07It's in the relationship between the two.

40:10That means everything, everything you experience is partly of your own making.

40:18You don't have a sense of agency about it because it happens really automatically.

40:22It's happening automatically now as we're talking.

40:26It's happening faster than you can blink your eyes.

40:30But it's still happening.

40:32And that means if you are partly, even though you don't have a sense of agency, you are partly

40:43in control and also therefore responsible for the meaning that is being made.

40:53And when I said at the outset of our conversation that my goal was to try to, you know, as a science communicator, was to try to explain to people that.

41:05They have more control over their lives.

41:08They have more control over who they are in any given moment than they think they do to give them more agency in their lives.

41:17This is exactly what I mean.

41:23You don't have an enduring identity.

41:26You are who you are in the moment of your action.

41:30And actions are a combination of the remembered past, so stuff your brain is using to predict.

41:38That's how it's, that your brain's assembling super automatically.

41:43And the sensory present.

41:45Right?

41:45So if you want to change who you are, you want to change what you feel, you want to change what your impact is on someone else, you have a couple of choices.

41:56You can try to go back into the past and change the meaning of what's happened.

42:02Four.

42:03So that you'll remember differently, you'll predict differently in the future.

42:07That's what psychotherapy is.

42:09That's what, you know, heartfelt conversations at two o'clock in the morning are with your friends or whatever.

42:15That's really hard shit.

42:16It doesn't always work so well.

42:19The other thing that you can do, though, is if you realize that whatever you experience now...

42:25Becomes the seeds for predictions later, then you can invest in creating new experiences quite deliberately for yourself now.

42:36You can expose yourself to new ideas.

42:38You can expose yourself to people who are different than you.

42:42You can practice cultivating particular experiences like you would practice any skill.

42:49And that will, any new concepts you learn, new experiences you have in the moment, if you practice them, they become automatic predictions in the future.

43:03So let me take that and try and apply it to this example of this silver cup in my hand.

43:08So psychotherapy would try and go back into the past and explain to me why this actually isn't something I should drink out of and that it could be other things.

43:19Whereas what you're saying is another approach is if I go and get some flowers right now and I put them in there, I'm creating a new prediction for the future because I've created a new pattern in the present of this actually being a vase for flowers.

43:32And I can start to create a new pattern that silver cups like this one aren't just for drinking out of.

43:38They are also vases for flowers.

43:40Exactly.

43:41Okay, so I can either go back in the past and try and convince myself that the cup isn't a cup, or I can, in the present moment, create a new pattern, which will mean that in the future, my brain will predict next time it sees a silver cup, it won't just think drink out of it, Steve, it'll think pop some flowers in it.

43:55Right.

43:56And remember, it's actually the thinking comes after the action, right?

44:00So what will happen is the next time that you are approaching a table where a silver cup might be, your brain will already be starting to prepare the actions to go get the flowers.

44:10Right.

44:11And then you will think, oh, right, I can use this as a, oh, look, there's a great vase.

44:17Right?

44:17So in your brain, it's action.

44:20First, your brain is controlling, it's preparing the actions of the viscera, what we call visceral motor.

44:27So does your heart rate need to change?

44:29Do your blood vessels need to dilate?

44:31Do you need to breathe differently?

44:32It's basically...

44:33Anticipating the needs of the body and attempting to meet those needs before they arise.

44:39That supports your physical movements, right?

44:41So if you're going to, if you're walking over somewhere to pick up some flowers and cut the stems and whatever, those are all physical movements that require glucose and oxygen and shit like,

§04Transcript — part 4

44:53so all of that has to get prepared in advance, milliseconds before the actions start to be prepared.

44:59So it's not what you think determines what you feel.

45:02It's what you feel.

45:02What you prepare to do determines your thoughts and your feelings and the sights and sounds and smells and sensations.

45:10That's how it really works under the hood.

45:13So meaning is in terms of what you do.

45:18And then as a consequence of that, it...

45:20Meaning is a consequence.

45:22It becomes what you feel and what you think and so on.

45:26So let me give you some specific examples then.

45:28So if I'm scared of spiders, how would I go about overcoming that fear of spiders using route number two that you described there?

45:38So one of the ways that you change to change predictions, you can't just will yourself to change a prediction.

45:45I am really afraid of bees.

45:49I had a traumatic experience when I was five.

45:53I'm afraid of bees.

45:55I know a lot about bees.

45:57I'm actually a gardener.

45:59And I know a lot about the evolutionary biology of bees.

46:04But when I am outside, if a bee comes around, my first reaction is to either run or to freeze, right?

46:12I'm afraid of bees.

46:15I could talk to myself until the cows come home.

46:17It won't matter.

46:18I can't, right?

46:19So what I have to do is dose myself with prediction error, meaning I have to interact with bees in a way that changes my actions.

46:32which will change my lived experience.

46:35And I can't just do it all at once.

46:37It's not like a good idea would not be for me to say, would not have been for me to go to like somebody who has beehives and, you know, put on a suit and go work.

46:47I mean, that would be like overwhelming, right?

46:50So instead...

46:51Maybe I don't run.

46:54Maybe I stand and watch.

46:57Maybe I get closer to a bee.

47:00Maybe I plant bushes and flowers that bees like a lot to bring bees to me so that I can sit and just be around them while they're buzzing and doing their thing.

47:13Maybe I deliberately let myself get stung at some point, which I did.

47:19But, you know, you're dosing yourself with, your brain is making a set of predictions.

47:25Those predictions, there are a set of predictions.

47:29That means your brain isn't preparing one action, it's preparing multiple actions.

47:35So you need to prove to your brain that those predictions are...

47:39Wrong.

47:40Yes.

47:40So exactly.

47:42You are setting up circumstances so you can prove to yourself that your predictions are wrong.

47:49If you're predicting well, you have a few action plans.

47:52If you're predicting poorly...

47:55let's say overgeneralizing, maybe you have a hundred plans.

47:58Like if there's tremendous uncertainty, your brain doesn't know which action plan.

48:03So there might be many of them, right?

48:06Sensory signals are coming into your brain from the sensory surfaces of your body, from your retinas, from your cochlea.

48:13You've got sensory surfaces on your skin, inside your body, in your muscle cells, all these signals coming to your brain.

48:19They help select which prediction signal will be completed as action.

48:28And lived experience.

48:31Okay, so let's say you put yourself deliberately in a situation where the incoming signals will not

48:41select any prediction because there's too much unpredicted signal there.

48:46It's error.

48:47There's another name in psychology for taking in prediction error.

48:52Exposure therapy?

48:53Learning.

48:54Oh, okay.

48:56Yeah, exposure therapy, which is a kind of learning.

48:59All learning, all learning is you taking in prediction error, signals you didn't.

49:08Predict or there's no signal that you did predict.

49:12You predicted a signal, it's not there.

49:14So what you do is you set up situations for yourself that you will take in signals that are novel, right?

49:23And this seems like an easy thing to do.

49:28We, people actually sometimes seek novelty.

49:32All right.

49:33But too much novelty is not necessarily a good thing all the time, particularly if, you know,

49:42you're metabolically, it's expensive metabolically to take in prediction error and learn something new.

49:48Like the biggest costs that your brain expends energy on are moving your body.

49:55Learning something new, and dealing with persistent uncertainty.

50:00Those are really expensive things for us.

50:03So if you're metabolically encumbered in some way, say you're depressed or you have anxiety disorder, or maybe you have heart disease or diabetes, or you're living under chronic stress,

50:17You don't have the spoons necessarily to take in prediction error.

50:21You're just going to go with your predictions.

50:23You aren't going to learn.

50:24You aren't going to be able to update those predictions.

50:27You're going to be stuck.

50:28You're going to be stuck in your head, right?

50:33Every experience, every action, a combination of the remembered past, the predictions, and the sensory present.

50:40But the central present is there just to select which remembered past you're going to act on.

50:50And sometimes in moments of great metabolic load, the brain just goes with its own predictions and ignores what's out there in the world.

51:02I was thinking earlier on as you were speaking about this sort of social contagion where we can

51:09apply meaning to our lives and what happened to us and then consequently make ourselves sad because we see how other people on TikTok or Instagram are feeling.

51:19And it made me think that you must...

51:21You must think the world is crazy to some degree.

51:24You must see social contagion in the world where suddenly everybody becomes traumatized because trauma has become almost popular, you know, to think about what happened to you and create meaning to it and then suffer that meaning.

51:35But there's other types of social contagion where, which are spreading through society.

51:40I mean,

51:40young people are getting more and more anxious.

51:42They're getting more and more depressed.

51:43We're self-diagnosing ourselves with different illnesses and different things.

51:49But now you've explained to me how the brain works.

51:51I'm thinking, gosh, as a society, we are bonkers.

51:56Well, we're living out lies.

51:58Yeah, I think.

52:00I guess the way I...

52:03I do find it frustrating at times, but only because I think we are meaning makers.

52:10Animals are meaning makers.

52:11We create meaning.

52:13We create meaning by virtue of living, like by virtue of interacting with things in the world, by interacting with each other.

52:21Very few meanings are given.

52:26That is that they exist independently of us.

52:29And so what I find frustrating is that

52:32There's a lot of suffering.

52:38Understanding these basic operating principles of the brain will not remove all suffering, but it could ameliorate, it could remove some.

52:51And people don't understand that they are sometimes...

53:02Making their suffering worse than it has to be.

53:05You paused on the word responsible.

53:07Well, I want to be really clear that, again, I'm not saying people are to blame.

53:14Culpability and responsibility are not the same thing.

53:18Culpability is blame.

53:19Are you blameworthy?

53:21Right.

53:21You can, nobody, I'm not saying people are to blame for their own suffering.

53:27I'm saying that people can be more responsible in, by taking more responsibility, they could reduce their suffering some.

53:37That's not the same thing as saying,

53:39you know, that it's their cause to begin with.

53:42So I'll give you an example.

53:44Social contagion.

53:45Contagion is an interesting word.

53:47It means that you are infected by something.

53:51Even a virus.

53:53There are these experiments that were done 15, 20 years ago where...

53:58These are done by Sheldon Cohen, who is a psychoimmunologist, which means he's like a...

54:02and he studies how immunology, that is your immune system, is related to your psychological state.

54:11And so what he did across a number of experiments is he took people and he sequestered them in hotel rooms.

54:18And then he took the same dosage, the same concentration of virus, and he put it in every person's nose.

54:27And then he controlled how much they slept, how much they ate.

54:30He measured their symptoms.

54:32He, like, weighed their tissues after they blew their nose.

54:36I mean, like, he did, right, just really, really, really, really careful metrics.

54:41And across these experiments, somewhere between 20 to 40% of people became symptomatic with respiratory disease.

54:51That means the virus is necessary, but it is not sufficient to cause illness.

54:59Another necessary but not sufficient cause is the state of each person's immune system.

55:07That is, your brain and your immune system have to be in a particular state in order for you to be infected by a virus in these experiments.

55:16So the point that I'm making here is exactly the same about suffering.

55:21So let's take anxiety, for example.

55:25You know, we, in a culture, we automatically make meaning.

55:32of certain types of signal patterns as anxiety.

55:36When there's a lot of uncertainty, there's an increase in norepinephrine and some chemicals in the brain.

55:43That often goes with an increase in heart rate and so on.

55:48And we automatically make meaning of this physical state as anxiety.

55:55But exactly the same physical state could be determination.

56:00It could be just pure uncertainty.

56:03Again, meaning making is about action, right?

56:06So when you are experiencing high arousal, even if it's super unpleasant as determination, you do something different than...

56:17If you experience it as anxiety or uncertainty.

56:21So here's an example.

56:23There are people who experience test anxiety.

56:26Really serious test anxiety prevents people from finishing courses or graduating from college.

56:34People who graduate from college...

56:36Have a lifetime trajectory of earning that is hundreds of thousands of dollars more often than somebody who drops out of college.

56:44So test anxiety, over the long run, it's more than just a bit of discomfort.

56:50You know, it has serious implications for your earning potential across your life.

56:56There are these experiments that were done where they trained people to make sense of high arousal.

57:04physical states, not as anxiety, but as determination.

57:09And these people learned to do this.

57:13First, they practice like a skill.

57:14It's like driving.

57:15At first, it's really hard.

57:16You have to give a lot of effort to it, but you practice, practice, practice, and then eventually it becomes really automatic.

57:21And then what happens?

57:23They're able to take tests.

57:25They're able to pass tests.

57:26They're able to continue taking courses and so on.

57:29I watched this actually happen right in front of my eyes.

57:32My daughter, when she was 12 years old, she was testing for her black belt in karate.

57:38Her sensei was a 10th degree black belt.

57:42This guy, a 10th degree black belt is the highest you could be.

57:46This guy could break a board like by looking at it.

57:49He was a scary, scary dude.

57:52And my daughter was like not even five feet tall when she was 12.

57:57And she's this tiny little thing.

57:59And she's got to spar with like these hulking, like 15, 16, 18-year-old boys.

58:06She's got to actually spar with them.

58:08And so, you know, she's, and this is across several days.

58:12She's got to do this really.

58:13And so I'm sitting there, you know, her dad and me were sitting there, we're watching her.

58:18And so her sensei, you know, saunters up to her and he says,

58:22Sweetheart, get your butterflies flying in formation.

58:28And I was like, that's fucking amazing.

58:32Get your butterflies flying in formation.

58:34He's not saying calm down, little girl.

58:37That would actually be bad.

58:39You don't want to be calm.

58:40You need that arousal.

58:41It's there for a reason.

58:43It's uncomfortable, but you need it.

58:45He's saying...

58:47Use it.

58:48That to me was like a perfect example of find a different meaning for that arousal.

58:56And that meaning is the action that you will engage in.

59:01No matter how hard it is, no matter how much it doesn't really look like what it's supposed to, the control is there.

59:09It's there.

59:10It's not there all the time.

59:12It's harder to get, you know, yada, yada.

59:14But it's there.

59:16And it means that.

59:18You have more agency.

59:22You have more control.

§05Transcript — part 5

59:24You're never going to have as much control as you want.

59:27It's always going to be harder to get.

59:31Your options aren't always going to be the same.

59:35But you can always find a little more control over what you do.

59:42And what you experience.

59:44And that's the key to living a meaningful life.

59:48Are you somewhat concerned about the world that young people are growing up in, where they're scrolling on social media and social media is telling them what certain...

59:56Feelings are.

59:57So they are just being programmed constantly.

60:02Yeah, they are.

60:03To be anxious, to be depressed, to be sad.

60:06Yes, they are.

60:07And think about it too.

60:08Social media is pernicious uncertainty there.

60:14You know, you, first of all, even when we're sitting face to face,

60:19We have all of these cues.

60:21We have all these signals.

60:23I can see your face.

60:24I can hear your voice.

60:26Even when all this information is there, there's still some uncertainty, right?

60:32We're not reading each other.

60:33Bodily movements are not a language to be read.

60:39It's a bad metaphor.

60:41Right?

60:41We're guessing.

60:42We're always guessing.

60:44And we're using a lot of signals to guess.

60:47But when you're on social media, you have very few signals.

60:54There is a lot of ambiguity.

60:57There is a lot of uncertainty.

60:59And the only thing that you can do is fill in that uncertainty with your own guesses, which could be bad, right?

61:09So people who go on TikTok and whatever,

61:14are giving up.

61:16They're like,

61:18volitionally giving up their agency and they don't know it.

61:23What do you mean by that?

61:24They're choosing to be led.

61:27They're choosing to be influenced.

61:33I'll give you an example.

61:35I've listened to podcasts about metabolism.

61:39I've listened to podcasts about, you know, skincare.

61:43I've listened to podcasts.

61:44You know, I'm curious.

61:44I'm curious about like what kind of information people put out there.

61:48I probably turn off 90% of the, I get like 10 minutes into something and I will turn it off.

61:57That's what it means to be a consumer.

62:00You have choice.

62:01I think people are, they don't realize that by virtue of what they do and what they don't do,

62:08they are making choices about what will be retained in their heads that will then be used automatically.

62:17Later.

62:19Brainwashing.

62:20A little bit, except that you're the one who's, you're choosing it.

62:27You know, I'm empathic and I'm not blaming people, but they could, things could be better for them, you know?

62:34I mean, I had a daughter who was clinically depressed.

62:38That was one of the most frustrating experiences I've ever had in my life, in addition to being really tragic.

62:44I mean, I can talk about it now without breaking into tears.

62:46That took a long time.

62:48But at first, she was so resistant.

62:52And eventually, you know, she made the decision that she wanted to be helped.

62:56And then we completely changed her life.

62:59But she had to make that decision.

63:01I couldn't force her to do it.

63:02And I feel like a little bit, it's the same kind of situation now where there's so much bullshit out there in the wellness industry.

63:11There's so much, you know, swirling around on TikTok and on other areas of social media.

63:19Not all of it is useful, and some of it's really harmful.

63:23Do you mind if I pause this conversation for a moment?

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64:18The advantage you have as an objective onlooker is you have a huge amount of information and knowledge which is guiding you to make better decisions.

64:27But a lot of people don't have that information and knowledge.

64:28In fact, they have counter information and knowledge.

64:31So when I think about what it takes for someone to make a change in their life, whether it was your daughter or whether it's someone else who feels like they're stuck and they feel like they're trapped in an algorithm or trapped in a life that they want to break out of.

64:44Based on everything you know and based on the experience you had with your daughter, what is step one to being able to make that change?

64:52Because I'm really curious as to what it was about your daughter that made her decide that she wanted the help.

64:59Well, I think that the general answer is,

65:04baby steps.

65:05It rarely works to completely change everything all at once.

65:10I'm not saying it never works, but it rarely works that way.

65:14So, for example, you know, you could deliberately get off social media for one day a week.

65:24Or do something else instead with a friend.

65:28Or go for a walk.

65:30Or just...

65:31And build it into your day as a scheduled thing.

65:34So that's the other thing is that you can't do things because you want to do them.

65:39You have to force yourself to do them.

65:41So, for example...

65:42I had major back surgery, major back surgery, very serious.

65:47And I knew that after I had back surgery that I was going to experience sensations I had never had before.

65:56Just like, you know, if you go for a filling in your tooth, right?

66:00And then, you know, something's there that wasn't there before.

66:03And then your tongue is like constantly poking at the tooth and you're not supposed to, but you do anyways, because your brain is foraging for information.

66:12It's foraging for prediction error.

66:15And then eventually it adjusts its predictions and then it ignores the sensations because they're not relevant, right?

66:24So that was going to happen on a massive scale for me.

66:27And I knew that.

66:29I had made a plan before surgery to dose myself appropriately.

66:35With prediction error so that I would not develop chronic pain.

66:39Because chronic pain is like a set of bad predictions that don't update, right?

66:43So your brain still believes that there's tissue damage in your body when there's no more tissue damage.

66:50So does that mean that pain often is...

66:53Just a figment of your imagination.

66:55No, that's the wrong way.

66:56That is the wrong way to think about it.

66:59The way to think about it is every experience, remembered past and sensory present,

67:06So pain is in your head.

67:10Vision is in your head.

67:13Hearing is in your head.

67:14You don't hear in your ears.

67:15You hear in your head, in your brain.

67:18You don't see in your eyes.

67:20You need your eyes.

67:21You need your ears.

67:22But you don't see in your...

67:26eyes you see in your brain.

67:30So pain is a combination of the, just like vision is a combination of the remembered past and the sensory present.

67:39Okay.

67:40Okay.

67:40So it's both.

67:41So chronic pain happens when...

67:45Your brain was receiving signals from the body that there was tissue damage, no susceptible signals, they're called.

67:55And it was making sense of them as pain.

67:58And when you're recovering from an illness, that's metabolically taxing.

68:04So there's not as much metabolic, there's not as much of your metabolic budget devoted to learning.

68:13So you can be in a situation where your brain doesn't update itself.

68:18And you still experience pain, even though the tissue damage is no longer there.

68:27It's just like seeing a green apple in your mind's eye when there is no apple in front of you.

68:34It's not all in your head.

68:38In the, you know, insulting sense.

68:42It's just, it's a normal consequence of how brains work.

68:46The injury's gone, but the signal of the injury is still replaying itself.

68:51Yeah, exactly.

68:52Just like, it's like a phantom limb.

68:54It's like tinnitus is also like that.

68:55Oh gosh, yeah, I had that for a while.

68:57On a wall.

68:57Yeah.

68:58So I tried really hard to set a schedule for myself, you know, that would allow me to sort of like optimally dose myself with prediction error.

69:12But that meant...

69:14You know, that I had to follow that schedule.

69:17And I think if you're committed to changing your habits, this is how you change any habit, really.

69:23You change the context and then you practice.

69:28You practice new behaviors.

69:35So with my daughter,

69:38Depression, we think about depression in our lab as,

69:44let me back up and say, your brain's most important job really is not thinking, it's not feeling, it's not even seeing, it's regulating your body.

69:53It's regulating your metabolism, basically.

69:57That's your brain's most important job.

69:58Your brain's most important job is anticipating the needs of your body.

70:02And preparing to meet those needs before they arise.

70:05The metaphor that we use for this predictive regulation of the body, which is the formal term is called allostasis.

70:15That's the scientific concept, but the metaphor is body budgeting.

70:20It's running a budget for your body.

70:22Your brain is running a budget for your body.

70:23It's not budgeting money.

70:25It's budgeting salt and glucose and oxygen and potassium and like all of the nutrients and chemicals that are necessary

70:36to run an energetically costly body.

70:41You know, you've got all these really low-level kind of processes.

70:44You can just think of them as vital parts to keep yourself alive.

70:49So some of your energy budget goes to that.

70:52Some of your energy budget goes to repair and growth.

70:57So if you get taller, you need more cells.

71:00When you learn something, you have to thicken up your...

71:03Your myelin and your neurons, you've got to grow more receptors and stuff.

71:08That's, you know, the kind of growth and repair.

71:13And then the rest of it is all for anything effortful.

71:16What is effortful?

71:17Like work or going to the gym.

71:19Dragging your ass out of bed in the morning is effortful.

71:23Yeah.

71:23Learning something new is effortful.

71:26Dealing with uncertainty is effortful.

71:29Everything we call stress.

71:31Stress is just really your brain is predicting a big metabolic outlay because there's some effort involved, right?

71:39Some motivated effort involved.

71:42So those are the three things that make up your energy budget.

71:47And the really important point, you as an organism have a fixed amount of energy that you can produce in a day.

71:57Meaning ATP, like these little chemicals, these little protein things that your cells use as literal energy that come from glucose and other things like fats and...

72:11So there's nothing I can do to increase it.

72:12Well, you're in a range.

72:14Okay.

72:15But there is a finite limit, upper limit for that range because you are a human organism.

72:25And you've got to do these three things, these vital functions.

72:31Growth and repair, and then everything.

72:34If you've got a lot of psychosocial stress going on or you have some kind of disease that's taking up, you know, much of the budget, then you don't have a lot of budget left for other stuff that you need to do.

72:47So what your brain will attempt to do is to cut costs.

72:51If you look at the symptoms of depression, they are...

72:56Symptoms that are related to cutting costs, distress, fatigue, problems concentrating, lack of sensitivity to the context that you're in.

73:08All of these things are indicative of reduced...

73:15Metabolic outlay.

§06Transcript — part 6

73:16And then depression also has symptoms that are related to increased costs, like 70% of people who are depressed have inflammatory problems.

73:28So they have enhanced inflammatory, systemic inflammation.

73:33And your immune system is a very expensive system to run.

73:41So if you have persistent and systemic inflammation,

73:48That's like a persistent tax on your budget, meaning things are costing more than they necessarily need to.

73:57And even, you know, like there are these really interesting studies.

74:02I think they're interesting.

74:03as a scientist, as a person, I find them like slightly horrifying.

74:06But, you know, like if you, within two hours of eating a meal, if you encounter stress, social stress, it's as if you ate 104 more calories than you actually ate.

74:20So you're so inefficient in metabolizing that it's like having eaten 104 more calories than you did.

74:28And even good fats will be metabolized as if they're bad fats.

74:34And potentially stored as...

74:36Yeah.

74:37So if you add up 104 calories at every meal for a year, that's almost 11 pounds.

74:44That means that if you are in a stressful environment for a year and you eat exactly the same thing as you ate the year before, you would gain 11 pounds.

74:56In depression, we know, for example, that there's cortisol dysregulation in depression.

75:01That means there's dysregulation in metabolism.

75:06Because cortisol is a metabolic, you know, it's a metabolic chemical.

75:11People who take SSRIs, they take for depression, antidepressants are SSRIs usually or SNRIs.

75:20That means they are acting on serotonin to keep more serotonin in the...

75:26In the juncture between neurons, serotonin is a metabolic regulator.

75:31Norepinephrine is a metabolic regulator.

75:33Regulator.

75:34These are chemicals that are directly involved in your metabolism.

75:41So it's not a belief that depression has a metabolic basis to it.

75:48I think the question is, what is the elixir of all these metabolic influences that would lead somebody to develop a depressive state?

76:01But the simple point that I was making is I actually came to this idea about metabolism and depression because I was doing a shit ton of reading trying to figure out how to help my kid.

76:13What were her symptoms at that time?

76:15Just if there are any parents listening right now that can relate or anybody that's listening that can relate.

76:20Yeah.

76:21Well, I will tell you that I've given this talk before about depression in adolescence.

76:26Adolescence is a, it's like a perfect storm of metabolic vulnerability for many, many reasons.

76:36You know, your brain is trapped in a dark, silent box called your skull.

76:41It's receiving signals from the body and from the world.

76:44It doesn't know what the causes of those signals are.

76:47It's receiving the effects.

76:50It has to guess at the causes.

76:52What are the guesses?

76:53Predictions from the past, right?

76:55So it doesn't know about hormone surges immediately as they happen.

77:01It, you know, it takes 20.

77:03minutes or so, or sometimes a little less, depending on where the hormonal changes are and what their origin is, for the brain to receive the signals of those changes.

77:13And then it has to guess at what the causes are.

77:16The narrative that's used in psychiatry

77:20And medicine is a narrative that goes something like this.

77:24It goes back to this, like your brain is a battleground, right?

77:27So the idea is that, you know, you're born, the story is that you're born with these innate emotion circuits.

77:35You're not, you don't have any emotion circuits.

77:37You don't have any emotion circuits actually.

77:39But the narrative is you're born with these innate emotion circuits.

77:42They work.

77:43But you're not born with the ability to control them.

77:46That has to develop over time.

77:49So in adolescence, the idea is that mood disorders arise because you don't have enough cognitive control and you have too much emotion.

78:01So you've got this unbridled emotion and that's the problem.

78:05That's a really...

78:08Compelling narrative.

78:08It's just neuro bullshit.

78:12Basically, there's not a good evidence for that narrative.

78:16I heard it was a chemical imbalance.

78:18Yes.

78:19Well, sometimes people talk about that chemical imbalance in terms of

78:25serotonin being a happy chemical and dopamine being the reward chemical.

78:30And that's also, that's,

78:33It's such a simplification that it's not even wrong.

78:36Okay.

78:37Dopamine is not a reward chemical and serotonin is not a happiness chemical.

78:42They're both metabolic regulators.

78:44You see increases in dopamine in some neurons during episodes of punishment.

78:53And serotonin does many things in your body in many places.

78:59But one of the things that it does in controlled experiments is it allows animals to...

79:08Spend to forage, to engage in activity, physical activity, and learning when there is no immediate metabolic reward at the end.

79:20There's no deposit at the end.

79:24So dopamine is seen more, I think,

79:28now by many neuroscientists as a chemical that is necessary for effort, whether that is a physical effort or learning something, a mental effort of learning something.

79:42It's not really specific to reward per se.

79:45So at first with my daughter,

79:49You know, she went from being a really exuberant, engaged socially, very socially connected kid who, you know, she did great in school.

80:01And it's not like she had, you know, it's not like she was perfect.

80:03kid, but she was pretty enthusiastic and pretty exuberant and had a lot of friends.

80:09And then, you know, by the time she was in 10th grade, she was withdrawn.

80:19She was getting Ds in school.

80:21She couldn't concentrate.

80:22She wasn't sleeping.

80:24She

80:25She was miserable.

80:27She was really suffering, but she was miserable to be around.

80:30And to be honest, at the beginning, we thought she was being lazy.

80:35We thought, you know, she didn't want to do anything.

80:37She wanted to spend all this time in her room.

80:40She didn't, you know, she wanted to get rid of all of her activities.

80:43And we thought, come on, man.

80:46Step up.

80:47Like, where are you?

80:47You know, we thought she was being lazy.

80:49I mean, really, it just never occurred to me in a million years because she had no mood symptoms as a kid, like none.

80:58And then all of a sudden she just, she appeared to have no energy to do anything.

81:01But to us, it looked like she was being lazy and she didn't want to do her homework and she seemed really disengaged.

81:07And

81:08And it took me a while to realize, oh, no, this is something else.

81:16She was having trouble remembering conversations that we had.

81:20And at first I thought, oh, you're not paying attention to me.

81:22But then it seemed really clear that even in...

81:28day-to-day conversation.

81:29She couldn't tell me what was happening in her day.

81:31She just had no details.

81:32That's also a

81:33sign of depression, where you lose the episodic memory of details of the day.

81:38You can only talk in gists.

81:40You can't give specifics about times and places and events.

81:45You just lose, you don't retain that information long enough to be able to remember it later.

81:50There's no consolidation of that information.

81:53And when she was in 10th grade,

81:59you know, she came home with D's in school, D's in mathematics.

82:04And this is a kid who was doing fun, you know, she was doing rudimentary algebra when she was eight.

82:09And, um,

82:11We told her that we had to have her assessed because we just didn't know what was going on.

82:20And that's when we realized that she was clinically depressed.

82:23The other thing I should say is that, you know, she had very bad menstrual cramps.

82:29And so a lot of...

82:34One treatment for bad menstrual cramps is to put girls on birth control pills because it evens out the hormonal fluctuations of the month and it does actually improve menstrual cramps.

82:49But it's pretty well known now.

82:51It wasn't.

82:52So much known then that there is somewhere between a 40 and 70% increase in the likelihood of major depressive episode in young women who use

83:04birth control pills.

83:05If it's a combination estrogen progesterone pill, it's more like 40%.

83:10If it's a progesterone only pill, which a lot of young women take because it has fewer side effects, you have a 70% increase in major depressive episode.

83:21And this is in...

83:22The first study that I read about this was in A Million Women.

83:27And when I read that study, I remember exactly where I was.

83:31It was like a flashbulb moment.

83:32I read the study.

83:34I called her pediatrician, my daughter's pediatrician, and I said, she's coming off pill today.

83:40Today.

83:41So tell me if there's anything, are there any side effects or can we just stop it?

83:44And he's like, well, in my opinion, and I'm like, I don't give a shit about your opinion.

83:49I have just read a study that is like, you know, it's a large scale epidemiological study of a million women today.

83:58She's coming off today.

83:59And this was after or before she was experiencing depression?

84:03This was after.

84:04It was...

84:05It was...

84:08Maybe a year after she was diagnosed.

84:11Much later, I read, I was reading a book by Naomi Oreskes, the historian of science, and she wrote a book called Why Trust Science?

84:22And it's a wonderful book.

84:23But in the book, she talks about, she gives examples of places, a phenomena where

84:29The public didn't trust science and they should have.

84:32And this is why.

84:33One of them.

84:34Apparently, it's been known for a really long time.

84:37And I just want to point out that estrogen, progesterone, testosterone evolved as metabolic regulators.

84:48I'm highlighting it because in a lot of, because in a culture that separates mental from physical, we don't think about the role of metabolism in vision or in, even in mood.

85:02That's a really recent thing.

85:04In our lab, we, one of the things we study now is the role of metabolism in

85:10in really basic, really, really basic psychological phenomena.

85:16Like just as a fundamental building block of your mind, basically.

85:21So your daughter exhibits those symptoms.

85:24I'm really curious to hear what conventional medicine at that point told you you should do with the daughter in that situation at that time.

85:32Versus what you did.

85:33You have this wealth of information.

85:34You have a medical background.

85:35Yeah, so I should say this was, you know, this was some years ago, right?

85:41So currently there is a kind of a revolution going on where there's actually something called metabolic psychiatry now.

85:51Back when this was, you know, when I was reading about this, it sounded crazy.

85:56When I saw...

85:58What my daughter was, what, that she was suffering, like really suffering, like really suffering.

86:03It's really hard for me to talk about this because as I'm talking to you about this, I'm thinking, I just, I wish that I, you know, I wish that I had figured this out earlier.

86:16But anyways, what we did was I found every possible route that I could think of.

86:24To target her body budget, so basically target her metabolism.

86:30And then we basically came up with a daily routine, which she participated in making to see if we could...

86:44put her on a different trajectory, you know?

86:48And that involved everything from getting off social media.

86:52Because?

86:53Because, first of all, she was using, like a lot of kids do, she was using her screens late at night.

87:03At that point, and again, this was something I just happened upon, right?

87:06But actually at a NCI, at a National Cancer Institute meeting, you know, we have retinal ganglion cells.

87:16We have cells in our retina that...

87:20Regulate circadian rhythm, and they're sensitive to light at the wavelengths that comes from your screen, from a screen.

87:29So if you look at those screens at night, your brain thinks it's daytime, like your circadian rhythm.

87:36You give yourself a circadian rhythm disorder, basically.

87:39And it will be harder to get into a regular sleep cycle.

87:44And you need that regular sleep cycle in order for toxins to clear and in order to consolidate what you've learned during the day so that you can remember it later.

87:54And a whole bunch of restorative things happen during deep sleep that you really need.

87:59And if you can't get enough deep sleep, that will make your budgeting problems worse, basically.

88:05So we targeted her.

88:07We got her off social media.

88:09Well, first of all, off screens.

88:12After, you know, like seven o'clock, eight o'clock at night, no screens.

88:16Off social media to reduce social uncertainty, social stress.

88:21I got up with her at 5.30 every morning, made her breakfast, sat with her while she ate breakfast.

88:27So made sure that she was eating nutritious food, not pseudo food, like, you know, Pop-Tarts and shit like that.

88:34We had to start her.

88:37Like exercising again.

88:38So she started to walk long distances.

88:42She started doing Pilates, like not Pilates on a mat, but like Pilates with a reformer that would make anybody cry, you know?

88:50Why exercise as it relates to this budget and the metabolic functions?

88:54Because exercise...

88:58Basically exercise throws your, throws your, it's like your brain, it's like you're, you're throwing yourself out of metabolic balance so that the brain can learn to get itself back in.

89:12You're basically,

89:14improving the resilience of your physical systems is basically the way to...

§07Transcript — part 7

89:20So she's not, you know, she needed something more like interval training, which is what these Pilates classes were, as opposed to, you know, practicing to play tennis or whatever.

89:33Something that would...

89:35would, where she, you know, after a certain period of time, she'd be dysregulated metabolically.

89:41And then she'd,

89:42drink water and, you know, eat something healthful.

89:46And, and then her system basically was learning to become more flexible again, not so stuck.

89:54So again, it, it was like dosing with prediction error or like showing the, providing the brain with opportunity to learn that it was wrong.

90:03And then omega-3s, so we took, I can't remember the exact dose, but I dosed it out, high omega-3s, low omega-6s.

90:15With her doctor's permission, we also used a baby aspirin once a day on a full stomach to reduce systemic inflammation.

90:25Before bed, I mean, before bed, we had always done like a cuddle, you know, like when she was little, we would read a story or whatever.

90:33And in her early adolescent years, you know, she rejected that.

90:39And then we brought it back.

90:41So an hour before bed, we would, either me or her dad, sometimes all three of us, we would read a book together or, you know, he would read a book to us or we would, I, she, we would sit and talk and she would tell me.

90:56You know, all the things that were happening at school that she could remember.

91:00And sometimes they were really horrible.

91:02And I just had to empathize.

91:04That was really hard for me because I just wanted to fix it.

91:07I just wanted to fix it.

91:10And it was really, I had to really draw.

91:12on my own experience as a therapist to just sit with the distress and empathize rather than say, do this, do this, do this, do this.

91:25It took me a long time to learn that.

91:28And I'm still sometimes struggling with that.

91:30Why was that important?

91:32Because then she feels heard and she feels understood.

91:37And when you, it took me a long time to learn this, when she would tell me that, you know, someone had done something terribly mean.

91:46If I did anything other than empathize, she would feel like I hadn't heard her.

91:53And social support is a major, I mean, we are the caretakers of each other's nervous systems.

92:01Humans are social animals.

92:02It's hard to believe, I think, in a culture like ours where we're so individualistic, right?

92:09And it seems like a political statement or something.

92:12It doesn't really matter what your political views are.

92:15We evolve the way we evolve, man.

92:17We are social animals.

92:19We affect each other metabolically.

92:22We can add savings and we can add taxes.

92:25And, you know, the best thing for a human nervous system is another human.

92:32The worst thing for a human nervous system is another human.

92:36The wrong one.

92:38There are so many experiments showing such, I mean, I just.

92:42saw a set of experiments from one of my former postdocs that was just amazing, where she looked at glucose metabolism in mothers and babies.

92:52And I think she also did it in dating partners, if I'm not mistaken.

92:56And she looked at them alone.

92:59And then together, like alone during a task and then together during a task.

93:04And mothers and babies that are attached well, they're actually, their glucose metabolism is more efficient, like literally more efficient.

93:13And I believe she also showed this with dating partners too.

93:20You know, there are these studies, these old studies showing that, you know, it's like less calorically demanding to walk up a hill with a backpack if you're with a friend than if you're with a stranger.

93:34I mean, there's all these really batshit crazy findings that it, but if you realize that humans are literally affecting each other on a physical basis.

93:43Whether they're aware of it or not, whether they intend it or not, it's completely irrelevant or it's unnecessary, I would say, to have that effect, to have the effects be there, then it starts to make sense.

93:57You know, like the idea that, and again, meta-analyses show that you will live years longer, years on average, years longer.

94:06If you are in, if you have a social life,

94:12filled with people who you trust and who trust you.

94:17So is that why you got the family around just before bed?

94:21Because it was regulating her nervous system, her body?

94:26Yeah.

94:26Sometimes she, sometimes she still says this to me, actually, she'll say, can you just be my friend for a minute and not my mother?

94:34I'll be like, yes, I can.

94:35And then I actually have to do it, which is sometimes hard.

94:39Or I will say to her, this is for parents.

94:43Anybody who has an adolescent or an adult child, this is like one of my, I don't know how I came up with this, but it's like golden, right?

94:52I say to her, can I...

94:56I'm having a mother moment where I feel the need to nag you about something.

95:00And if I can just nag you for a minute about it, I won't need to tell you again.

95:06So I'm basically asking her permission.

95:08Can I tell you this thing, which I really want to tell you?

95:12And I know you don't want to hear it, but you would be doing me a real kindness if you would just listen to me for a minute.

95:18And I know it's me.

95:19It's all me.

95:20It's not you.

95:21It's all on me.

95:21This is me.

95:23But I just, it would be better if you could just let me.

95:28And most of the time she says, you know, with great forbearance, right?

95:32Like.

95:33Sure, Mama, go ahead.

95:35Sometimes she says, not today.

95:39And then I actually have to listen, you know?

95:42Yeah.

95:42But there were probably other things I'm not thinking of right now.

95:46I've written them all down because a lot of people have asked me this question.

95:49And what I like to say is this is I'm not a physician.

95:53I'm not a psychiatrist.

95:55This is not a recommendation or recipe for your children.

95:58I'm just telling you what I did as a scientist.

96:02And you wrote down what you did.

96:03You still have a copy of that, so I can link it below for anyone that does want to read what you did.

96:08Yes, but it's, again, it's...

96:12It's what you did for your daughter at that time.

96:14Yeah, just as a person who had read the literature, it's not...

96:21This is not medical advice.

96:23I'm really strongly...

96:25And also I should say, you can't force your adolescent to do anything.

96:31You can't even force your kids really to do anything unless you threaten them with physical harm.

96:36They have to make that choice themselves, right?

96:40And did she recover?

96:42Yes, she did.

96:44And I think one of the reasons why she is good now, it's not that she never has challenges with her mood, but she understands them in physical terms.

96:56She doesn't understand her mood as being a psychological problem.

97:01She understands it as...

97:04A symptom or a barometer of her body budget.

97:09This is something I learned from your work while I was researching.

97:12which was really, really helpful to me.

97:13And it's pretty much exactly what you just said, which is sometimes I'm in a not so good mood.

97:19And if I'm not conscious about that, then the bad mood can wreak havoc, right?

97:24I can be short with people or whatever.

97:26And when I was reading your work and thinking about bad or good moods through the context of this body budget,

97:33It makes you pause for a second and go, what am I missing?

97:36And it makes you very conscious of what you then do.

97:38It almost makes you suddenly take hold of the wheel and go, okay, so there's a problem here.

97:43It's a physical problem.

97:43I didn't get sleep last night.

97:45I haven't eaten, whatever it might be.

97:47Be really aware of what this makes you do or feel or think.

97:51And hit and...

97:52The actions you need to take are maybe cancel everything you were planning today and go back to bed.

97:58Well, but I think that you just put your finger on the really important thing.

98:02It's that it changes what you do next.

98:05Yeah.

98:06And that changes the trajectory of what happens.

98:09And I think this is really, it's not like a magic cure.

98:13But it, and again, you know, but when someone is, when, when you feel really distressed, you either look to the world, like what is wrong with the world, or you look to yourself, what is wrong with me?

98:25And really it could be, maybe there is something wrong with the world.

98:28Maybe there is something wrong with you, but most likely.

98:32It's something, there's a body budgeting problem.

98:36Even if it's the case that there's something wrong with the world, you're better equipped to deal with that thing if you are.

98:43Managing your body budget.

98:45You really do need to design your calendar as much as you possibly can in the confines of the profession you have around that body budget.

98:51And for me, the big change I made two years ago, super privileged, I get that and everyone can do it.

98:56I couldn't do it when I was working in call centers, whereas I implemented a rule where there's no meetings before 11 o'clock.

99:01And it just means for me that I never set an alarm.

99:04So I wake up when I'm fully recharged.

99:07And it was the most profound thing.

99:09I should have done this way sooner.

99:11But it's had such a big impact on my life.

99:12Because you can almost guarantee that it's very, very rare for me to be underslept.

99:16Although it happens because I have to travel and stuff a lot.

99:19But that really had a profound impact on my life.

99:21Yeah.

99:21And I think, you know...

99:22And as a leader in it.

99:24Exactly.

99:25And I think, honestly, if leaders take this seriously, then the hope is that there'll be some realization that this is also important.

99:40For everybody.

99:41And, you know, we have a society that is structured in a particular way, but there's no requirement that it's structured in this way.

99:49There's, you know, the biggest predictor of work productivity after

99:55you know, is sleep and hydration.

99:57And after you take away sleep and hydration, I think exercise is up there too.

100:02You know, some of us have more choices than others, right?

100:05But it's important, I think, for people who are, people who are

100:12CEOs who are leaders, who are business leaders, to understand that there are good business reasons.

100:21There are good economic reasons to take this shit seriously.

100:26Am I right in thinking that alcohol impacts your body budget?

100:32And it therefore makes it harder for you to exhibit all the other behaviors and expend energy in other areas.

100:40And also therefore increases the probability that you'll be depressed.

100:45So I should say that I am not an expert in the metabolism of alcohol.

100:52So I'm going to extrapolate based on what I do know.

100:57And what I would say there is that sometimes people will drink alcohol like they will eat chocolate or, you know, they're doing it for the taste or for the experience of, you know, the ambiance and experience of it, right?

101:13But a lot of people end up using alcohol.

101:16They might start that way or they might start because they're doing something with friends, but then they realize that it has a mood, it affects their mood.

101:25Anything which affects your mood, like people talk a lot about emotion regulation, but it's actually mood regulation.

101:31Again, you know, your mood is this...

101:34These simple feelings that are with you all the time.

101:37You know, your brain is always regulating your body.

101:40Your body is always sending signals back to your brain, out of which it makes mood.

101:47So mood is a property of consciousness.

101:51It's with you always.

101:53Sometimes in moments you will make sense of the signals and the mood that goes with it in terms of the outside world, and that's when you experience emotion, right?

102:04Where your actions are relating the two together in terms of your mood.

102:09But a lot of the time...

102:11We don't.

102:12We just experience mood.

102:14as a property of consciousness.

102:15You know, this is a delicious drink.

102:18That guy's an asshole.

102:20You're very trustworthy.

102:21The mood is embedded in the perception of the world.

102:25And when people, it's just like actually sometimes opioids have this effect also.

102:31They are, they're mood altering, meaning they're

102:35If they're manipulating your mood, they are manipulating your metabolism.

102:42And when people get addicted, they often get addicted because they're regulating their mood.

102:49They're attempting to reduce their suffering.

102:53The problem with, or a problem, I shouldn't say that problem because I don't know exactly how alcohol affects people.

103:03metabolism, my expectation is it's not just in one way.

103:09And also, I do know there are context effects, actually.

103:12So you can drink exactly the same amount of alcohol and it can have different effects in different contexts.

103:17That totally blew my mind when I saw that research.

103:19So I'm thinking it's not a simple relationship.

103:22But one thing I do know is that

103:24your predictions become sloppier and you don't take in prediction error.

103:35You don't learn.

103:37You won't update any, you know, so there, and so,

103:43Your behaviors are not necessarily well calibrated to the situation that you're in, which can have all kinds of downstream difficult problems.

103:52You know, you can make things in the downstream worse for yourself and make it harder to do budgeting later.

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§08Transcript — part 8

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105:13Steven.

105:14I wanted to ask you about something I heard you say, and I've actually had other guests on my podcast say it, and I wasn't ever sure if it was true until I heard you say it, which is that we can change our emotions by...

105:27Smiling.

105:28Because if the brain is predicting, then presumably if I do a big smile, and I go, yes!

105:36Then the brain is going to predict good feelings and going to cause good feelings, etc., etc., and going to cause me to feel nice about myself.

105:45Well, yes and no.

105:47I think, you know, people smile when they're not happy, too.

105:51People smile when they're angry.

105:54People smile when they're plotting the demise of their enemy.

105:57You know, people smile for all kinds.

105:59People smile when they're afraid.

106:01But can I make myself happier technically by smiling?

106:04The meta-analytic evidence suggests that there is a slight effect, that there's a small...

106:15Yeah, yeah.

106:16Crinkle your, if to crinkle, there you go.

106:18It's like putting, put a pencil between your teeth.

106:22Go ahead.

106:22Oh, you mean like, yeah.

106:23Now smile.

106:24Now crinkle.

106:25Okay.

106:26So it's like that.

106:28And so what I would say is it's a minuscule effect size.

106:33Like it's very small.

106:34I do feel happier.

106:35Do you?

106:36Yeah.

106:36But that's because I made you do something silly, maybe?

106:38Maybe, yeah.

106:39Okay.

106:39But anyways, the point being that it's overblown as a...

106:43effect.

106:46I think there's a small, my recollection is that the last meta-analysis I read was that there was a small effect, but a small effect means it doesn't work for everyone and it doesn't work always.

107:00It's just really, really a very, very small effect.

107:03You must have a perspective on ADHD, which has become a huge topic of conversation in society.

107:08I was diagnosed with ADHD.

107:10I don't necessarily take it to mean anything because I've seen so many variations of ADHD in my friends.

107:16But there's been this big rise of ADHD and linked to the work that you've done on the brain being a predictive.

107:26So my general response is the following, that people, there's a rise in people self-diagnosing and in using diagnosis as an explanation for,

107:40behavior or for the why people experience what they experience or whatever.

107:44Diagnoses are not explanations of anything.

107:47They're descriptions.

107:49They don't explain anything.

107:52And to treat a diagnosis like it's an explanation is a form of essentializing, which is not a good thing.

108:01It means that you're assuming that there's some kind of underlying, unchanging essence, which is responsible.

108:10In fact, there is something called psychological essentialism where you don't even know.

108:13what the essence is, you just assume it's there and that it's the cause of all these symptoms.

108:18But a diagnosis is just a description of symptoms.

108:22And diagnoses are mostly useful for billing hours of treatment.

108:29They're not optimized for...

108:33pockets, describing pockets of behavior that are, you know, or collections of behavior that tend to go together.

108:40Because people sometimes think that serotonin and dopamine are the reason why someone has ADHD.

108:44That's like one of the theories that I've...

108:46So there are multiple serotonin receptors.

108:49There are multiple dopamine receptors.

108:51They don't all do the same thing.

108:53Serotonin doesn't do one thing.

108:55Dopamine doesn't do one thing, does different things in different places in the body and the brain, depending on what the receptors are.

109:03And also, every resource of resilience and every symptom of difficulty has a context to it.

109:13There are requirements, the way our society is structured, there are requirements for sitting and paying attention to something for long periods of time.

109:25And that requirement is hidden in the background.

109:29It's there so frequently that we forget that that's the conditional, that's the condition upon which diagnoses are made.

109:40So whatever...

109:44First of all, ADHD is not one set of symptoms.

109:47It's a variety.

109:48It's like, it's a, you know, there's a lot of variation in the way that you can have different symptom profiles and have the same diagnosis because it's just descriptive and there are lots of symptoms.

110:01Some of those symptoms also occur in, they overlap with other symptoms.

110:05syndromes, other diagnostic clusters.

110:08But the point is that they all, when you diagnose someone, it makes it sound like that's a property of that person.

110:15But it's not.

110:15It's a property of a person in the context that they're in.

110:20And social expectation, by any respects, like can he pay attention in school?

110:27Well, right.

110:27And the way that school is organized is, you know, you sit for long periods of time.

110:33Well, it may be that there are other circumstances in which not holding your attention on one thing for a long period of time could be advantageous.

110:44So my point is that there are very few things that are just categorically good or categorically bad.

110:51There's always a hidden condition.

110:53There's always a hidden context.

110:55And so I think it's really important to foreground that context.

110:59You're not broken.

111:00You're just, your suitability to a certain context has been deemed to be, like, doesn't fit.

111:07It's not productive for that context.

111:09And that may sound like weasel words, or it may sound, you know, but it's not.

111:13Because...

111:14Because it's important that competencies are by context.

111:18And again, I would say this is not, you know, me being a bleeding heart, you know, progressive or whatever.

111:26I mean, I am a bleeding heart progressive, but this is not an example of that.

111:30This is an example of me being pragmatic.

111:34You can regulate each other, something you talked about earlier, which I found really, really interesting.

111:38I was reading about a study of 25,000 people, and they found that people having a heart attack were 14% more likely to survive if they were married.

111:48But the other thing that I found interesting is that we regulate each other with words.

111:52I think you did a study.

111:54On assessing the power of words to facilitate emotion.

111:59It was a study you co-authored.

112:01Well, we've studied the power of words in many contexts, including words as invitations to make sense of, you know, so

112:12if an instance of emotion is you making meaning of what is going on inside your body in relation to the world.

112:21Then you can, you invite people, every time you use an emotion word, you invite people to make meaning in that way.

112:27So you've proven then that certain words can calm us down?

112:32Well, yes, but I wouldn't say I've proven anything.

112:35Scientists don't, you know.

112:37Shown, demonstrated.

112:38Yeah, demonstrated in a context, right?

112:41Like, you know, scientists don't like...

112:43The F word.

112:45The fact, I like the other F word, but the fact, fact.

112:49That's a tough one because it means something that holds under all circumstances in all contexts.

112:54And that's very rarely the case.

112:57So, but yes, we have.

112:58So, and I mean, so if you've done it probably a million times.

113:02You text things to people, do you not?

113:06Yeah.

113:06Yeah.

113:06And when you text a couple of words to your partner or your friend, you can change their heart rate.

113:15You change their breathing rate.

113:16You can change all kinds of chemicals, all kinds of protein synthesis just with a couple of words.

113:22Again, you know, we live in a, you know, free speech is important.

113:27Freedoms are important.

113:29But freedoms come with responsibilities.

113:33Like it or not, we regulate each other's nervous systems in all kinds of ways, including with words.

113:42For better or for worse.

113:42For better or for worse.

113:44Exactly.

113:46You really made me think differently about stress as well, generally, because if I think about my life through the lens of this metabolic budget and stress is a burden to this budget, then...

113:59If I don't limit my stress, I'm much more likely to go over budget.

114:02And if I go over budget, my immune system might be the thing that I cut the costs of or something else.

114:10Right.

114:12I mean, there's good stress.

114:13You can't be...

114:13Without stress.

114:14That would mean you'd be without effort.

114:16So, you know, sometimes scientists will talk about good stress and bad stress, which really just means stress that is planned and where you replenish what you spend and stress that is pernicious and you don't.

114:29Chronic stress.

114:30Chronic stress or, you know.

114:32So what I would say is just, you know, if you're in a stressful meeting,

114:38A meeting where it's affecting your mood, that means there's been some metabolic impact.

114:46Take into account what that means.

114:48With all that you know about the brain, I wondered if it's changed your view at all on...

114:54Religion and God and spirituality.

114:56And if there is a higher power at all, the brain is such a wonderfully complex, beautiful thing.

115:01You know, it's the objective observer in 2025 looks at a brain because this is fantastic.

115:06Many people then conclude that there must be a creator of that brain.

115:10But also we've talked so much today about meaning and the point of it all.

115:13So everything you've learned about the brain and neuroscience and psychology, has it made you...

115:17Believe in a God?

115:19No.

115:21Has it made you more atheist or agnostic?

115:24I'm pretty firmly an atheist.

115:31I don't think that the wondrous complexity of nature or the brain or the nervous system requires a designer.

115:43And that logic doesn't make sense to me.

115:45So this is obviously a terrible leap, but do you therefore think that there's no inherent meaning to life outside of, you know, the like reproduction and...

115:55I'm just reading for the second time this book.

115:59It's called Open Socrates.

116:01Okay.

116:02And it's a really wonderful book.

116:04And I've learned a lot about Socratic philosophy that I didn't know.

116:10And one of the things that Socrates thought was important was asking this question of what is meaning.

116:18And that you shouldn't be asking this question in 15-minute increments.

116:23You should be really asking this question about the expanse of your life.

116:30And so I think if anything, being a scientist who studies

116:37how a brain in constant conversation with a body and the other brains and bodies in our world and even the physical nature of our world,

116:50how that creates lots of different kinds of minds, including our very Western mind.

116:57That makes me think more about the importance of philosophy, actually, because I think philosophy is asking the same kinds of questions that religious belief tries to answer.

117:10And for me, that's a better path.

117:13I think it's a more comfortable path.

117:14I've often been asking questions like this my whole life, actually, so it makes me feel more like, what's the point?

117:22Like, what is the ultimate point?

117:24I think the answer for me, the ultimate point, is to leave the world a little better than I found it.

117:33It's like the Johnny Appleseed, you know, philosophy.

117:38You know, like as a scientist, scientists often...

117:41You know, a lot of us, we don't do what we do for money.

117:45Money's not bad, but we don't do what we do for money.

117:47We do it for other motivations, right?

117:49To know, to be curious, to try to discover things.

117:54And at some point we start to think about, well, what's your legacy, right?

117:59Most of us are not Darwin.

118:02We're not William James.

118:03We're not, you know.

118:06Heisenberg, we're not, you know, most of us are not those people.

118:11So what's your legacy?

118:14And in the end, I realized that I've published a lot of peer review papers.

118:19When people introduce me, you know, they give some kind of like, you know, about my citation, you know, people, whatever.

118:25Dr.

118:26Lisa is one of the most influential figures in the field of emotion.

118:30Neuroscience and the nature of the brain.

118:32She's among the top 0.1% cited scientists in the world for her revolutionary research in psychology and neuroscience.

118:39Yeah, that's all nice, super nice.

118:42But actually, my legacy is really the people who I've trained, the minds.

118:50That I've had the opportunity to engage with.

118:55And if I were going to be bean counting, I might be bean counting the number of laboratories that now exist that didn't exist before.

119:08Several generations of scientists who I trained.

119:12Or who, you know, and also who trained me, I mean, along the way.

§09Transcript — part 9

119:16So that's my legacy in some ways, really.

119:19It's the people.

119:20It's the people and the ideas.

119:23And I would like to think just to actually to just wrap up to where we started.

119:31You know, when I used to do a lot of classroom teaching, I...

119:35I would feel like what I told myself is if I can change the trajectory, the outcomes of just one person in this class, just one, then I will have done my job.

119:49You know, and I kind of feel that way a little bit, sort of the same about the public.

119:55The public face of what I'm doing, right?

119:57The public, uh, educate public science education.

120:02If I can help,

120:05If something that I've learned or something I've communicated can help somebody else,

120:12live a more intentional,

120:19life of agents with agency where they're choosing and they're impacting their loved ones or their children, then I've done my job.

120:34That's my legacy.

120:36And the hard thing about that kind of a legacy, a legacy of ideas impacting people's lives, is that you don't ever know what your impact is.

120:49But that's part of the deal.

120:54We have a closing tradition on this podcast where the last guest leaves a question for the next guest, not knowing who they're leaving it for.

120:59Question is, how to live a life without attaining anything?

121:05I have some context on this person.

121:07They are a black belt.

121:10Shaolin monk.

121:12So they talk a lot about identity.

121:14Sure.

121:14And living without encumbrances and attachments and so on, right?

121:20It sounds like a very Buddhist question.

121:22The problem is that I think even a Buddhist attains something.

121:26They attain enlightenment.

121:28So they don't have attachments necessarily.

121:30They don't have wealth.

121:31They don't have power.

121:32But they attain something.

121:34They attain enlightenment.

121:37They attain tranquility.

121:40How about then how to live life without your identity?

121:46making you unhappy.

121:49Well, I think it's important to remember.

121:53That you don't really have an identity that is separate from the moment that you're in.

121:59It's not like there's an essence to you.

122:05What I would say is that everything you experience, everything you do is a combination of the remembered past and the sensory present.

122:15That means to change who you are, you can change what you remember or how you predict.

122:24Or you can change the sensory present.

122:26You can change the sensory present by literally getting up and moving somewhere else, like going for a walk.

122:32Or you can change the sensory present by what you pay attention to.

122:36Mindfulness, for example.

122:38There are some sensory signals that are front and center in your attention, and there are some that are in the background lurking.

122:45For example, you can...

122:48Right now, you're not paying attention to some sensory signals, but the minute that I say them, point them out, you will be.

122:54Like the pressure of the chair against your back and your legs.

123:00Now they're in the forefront of your attention because I just mentioned them.

123:03So what I would say is that there is no essence to who you are.

123:08You are what you do.

123:11In the moment, you are what you do.

123:14And.

123:16You can change what you do.

123:18You can change what you experience, the consequence of the lived experience, which is the consequence of what you do, by what you remember and what the context is.

123:32So that's my answer.

123:34If you always remember that.

123:36You will never be attached.

123:38You will never crave or strive, you know, to have things and like all of these artificial things which prop up the illusion that you are and you have an essence to you that you, that, you know, is unchanging across situations.

123:53Yeah, we, I, we are very quick to fall into the trap of thinking we are what we did.

123:59And that's, I much prefer I am what I do, because that means that I have agency to make a different decision in the moment, irrespective of what I did in the past.

124:09But that's the trap we fall into.

124:10In 10 minutes time, I bet I'll be downstairs and I'll be back into the trap of thinking that I am Stephen Bartlett who did this thing for 32 years or did, you know.

124:21Lisa, thank you.

124:22Thank you so much for, thank you for everything that you do.

124:24I've, you've changed my mind in a really profound way.

124:27And that's quite hard because I sit here quite a lot.

124:28So I have lots of conversations about the brain and about lots of new studies that have come out, et cetera, et cetera.

124:34But you've completely changed my mind and made me think from...

124:39In a completely different way, which I'm really grateful for.

124:42So thank you so much, because that's a gift.

124:44And that's not a gift that I always get doing this job, but it really is a gift.

124:48And it's one that I think will help me to live a better life ultimately, but hopefully also for everybody that's listening.

124:53And thank you for stepping into the public communication side of your life because

125:02I was going to say, it's someone that knows what you know and that has done the work that you've done.

125:07It is so important to the extent that I almost consider it to be like a really critical responsibility.

125:14Because there's people like us that sit on these podcasts who aren't in the laboratory, that are getting our information from social media, TikTok, or any odd person that says anything.

125:22And it's really, really important that people like you step out more and share what you know.

125:27And thank you so much for writing these books because they are absolutely brilliant.

125:32And just like you've changed my mind today, I think these books will change a lot of people's lives.

125:36I highly recommend this book, How Emotions Are Made.

125:38I'm going to link it below, The Secret Life of the Brain.

125:40And also for something a little bit shorter, but equally accessible, this book here, Seven and a Half Lessons About the Brain.

125:48Thank you so much.

125:49Thank you so much.

125:50I'm going to let you into a little bit of a secret.

125:52You're probably going to think me and my team are a little bit weird, but I can still remember to this day when Jemima from my team posted on Slack that she'd changed the scent in this studio.

126:01And right after she posted it, the entire office clapped in our Slack channel.

126:04And this might sound crazy, but at the Diary of a CEO, this is the type of 1% improvement we make on our show.

126:09And that is why the show is the way it is.

126:11By understanding the power...

126:13of compounding 1% so you can absolutely change your outcomes in your life.

126:18It isn't about drastic transformations or quick wins.

126:21It's about the small, consistent actions that have a lasting change in your outcomes.

126:26So two years ago, we started the process of creating this beautiful diary, and it's truly beautiful.

126:31Inside, there's lots of pictures, lots of inspiration and motivation as well, some interactive elements.

126:37And the purpose of this diary is to help you identify, stay focused on, develop consistency with the 1% that will ultimately change your life.

126:46So if you want one for yourself or for a friend or for a colleague or for your team, then head to thediary.com right now.

126:52I'll link it below.

126:53This has always blown my mind a little bit.

126:5553% of you that listen to this show regularly haven't yet subscribed to this show.

127:00So could I ask you for a favor?

127:01If you like the show and you like what we do here and you want to support us, the free simple way that you can do just that is by hitting the subscribe button.

127:08And my commitment to you is if you do that, then I'll do everything in my power, me and my team, to make sure that this show is better for you every single week.

127:15We'll listen to your feedback.

127:16We'll find the guests that you want me to speak to.

127:18And we'll continue to do what we do.

127:20Thank you so much.

127:46From Geico Subconscious News, I'm Tammy Racing Thoughts, broadcasting from your brain.

127:50Tonight's top worry.

127:51If something happens to your apartment and you need to, like, stay in a hotel and pay for it, that would be crazy, right?

127:57Art Palpitations has more.

127:59That would be crazy, Tammy, but you got surprisingly affordable renter's insurance through Geico, so it could be covered, giving you peace of mind.

128:06Aw, I love a story that ends well.

128:09Next up, love stories.

128:11Are they all they're cracked up to be?

128:12It feels good to worry less.

128:14It feels good to Geico.

— 读到这里,多懂一点。 —