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Lex Fridman Podcast / episode intelligence

#430 – Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

25 May 2024 33 published claims 2 attributable people

Speakers in the public record

Claim mix

belief 16evaluation 7recommendation 4uncertainty 3preference 2commitment 1

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The useful parts, with receipts.

33 published records

03 / belief

There’s a lot of details, but yes, I think… And not just fMRI, but you can relate it to, like I said, recordings from large populations of neurons that could be taken in a human or even in a non-human animal, that is where you think it’s an anatomical homologue.

“There’s a lot of details, but yes, I think… And not just fMRI, but you can relate it to, like I said, recordings from large populations of neurons that could be taken in a human or even in a non-human animal, that is where you think it’s an anatomical homologue.”
Publisher
Lex Fridman Podcast

05 / belief

You start to build a little internal model of how I behave and what to expect of me. And we think sleep, one of the things it allows you to do is figure out those connections and connect the dots and find the signal in the noise.

“You start to build a little internal model of how I behave and what to expect of me. And we think sleep, one of the things it allows you to do is figure out those connections and connect the dots and find the signal in the noise.”
Publisher
Lex Fridman Podcast

07 / belief

I think the most beautiful, but incredibly hard to put your finger on, is this idea of the internal model, that it’s like there’s everything you see, and there’s everything you hear, and touch, and taste, every breath you take, whatever, but it’s all connected by this dark energy that’s holding that whole universe of your mind together.

“I think the most beautiful, but incredibly hard to put your finger on, is this idea of the internal model, that it’s like there’s everything you see, and there’s everything you hear, and touch, and taste, every breath you take, whatever, but it’s all connected by this dark energy that’s holding that whole universe of your mind together.”
Publisher
Lex Fridman Podcast

12 / belief

Even switching between if you’re reading a paper, switching from paper to paper to paper, because curiosity and whatever the dopamine hit from the attention switch, limiting that, because otherwise your brain is just not capable to really load it in, and really do that deep deliberation I think that’s required to remember things, and to really think through things.

“Even switching between if you’re reading a paper, switching from paper to paper to paper, because curiosity and whatever the dopamine hit from the attention switch, limiting that, because otherwise your brain is just not capable to really load it in, and really do that deep deliberation I think that’s required to remember things, and to really think through things.”
Speaker
Lex Fridman
Publisher
Lex Fridman Podcast

13 / belief

There’s a weird blending of time that happens, and we’ll probably talk about time because I think that’s a really interesting idea how time relates to memory.

“There’s a weird blending of time that happens, and we’ll probably talk about time because I think that’s a really interesting idea how time relates to memory.”
Speaker
Lex Fridman
Publisher
Lex Fridman Podcast

14 / belief

Being able to just record from large populations of cells and then be able to relate that… [inaudible 01:32:03], I think the coolest thing gets back to this QR code thing, because what we can do now is I can take fMRI data while you’re watching a movie.

“Being able to just record from large populations of cells and then be able to relate that… [inaudible 01:32:03], I think the coolest thing gets back to this QR code thing, because what we can do now is I can take fMRI data while you’re watching a movie.”
Publisher
Lex Fridman Podcast

15 / uncertainty

I mean, I would argue that maybe, who knows, I don’t know this, but I wouldn’t be surprised if people in hunter-gatherer societies are happier.

“I mean, I would argue that maybe, who knows, I don’t know this, but I wouldn’t be surprised if people in hunter-gatherer societies are happier.”
Publisher
Lex Fridman Podcast

18 / belief

To me personally, I think that’s a technology problem that could be solved if there’s a little bit of interaction, kind, respectful, compassionate interaction with people that have a very different memory, that respectful interaction will start to intermix the memories and ways of thinking to where you’re slowly moving towards truth.

“To me personally, I think that’s a technology problem that could be solved if there’s a little bit of interaction, kind, respectful, compassionate interaction with people that have a very different memory, that respectful interaction will start to intermix the memories and ways of thinking to where you’re slowly moving towards truth.”
Speaker
Lex Fridman
Publisher
Lex Fridman Podcast

19 / commitment

There’s parts of the brain where… I will show you in some of these images where you’ll see kind of gaping holes because you can’t keep the magnetic field stable in those spots.

“There’s parts of the brain where… I will show you in some of these images where you’ll see kind of gaping holes because you can’t keep the magnetic field stable in those spots.”
Publisher
Lex Fridman Podcast

24 / preference

I think in the last version, it might’ve been that, or a Velvet Underground cover in our last show, I actually, I have a guitar made of aluminum that I got made, and I thought this thing’s indestructible.

“I think in the last version, it might’ve been that, or a Velvet Underground cover in our last show, I actually, I have a guitar made of aluminum that I got made, and I thought this thing’s indestructible.”
Publisher
Lex Fridman Podcast

25 / preference

That’s not the technology adapting to you, that’s you adapting to the technology. And I think one of the things I learned when Google started to introduce autocomplete in emails, I started to use it.

“That’s not the technology adapting to you, that’s you adapting to the technology. And I think one of the things I learned when Google started to introduce autocomplete in emails, I started to use it.”
Publisher
Lex Fridman Podcast

26 / evaluation

They’re part of my tribe, if I remember the same things in the same way. And you brought up this weaponization of history, and it really speaks to, I think, one of the parts of memory, which is that if you have a belief, you will find, and you have a goal in mind, you’ll find stuff in memory that aligns with it, and you won’t see the parts in memory that don’t.

“They’re part of my tribe, if I remember the same things in the same way. And you brought up this weaponization of history, and it really speaks to, I think, one of the parts of memory, which is that if you have a belief, you will find, and you have a goal in mind, you’ll find stuff in memory that aligns with it, and you won’t see the parts in memory that don’t.”
Publisher
Lex Fridman Podcast

27 / evaluation

I think even if you think about the big decisions in life. It’s like you and I were talking before we started recording about how I got into memory research and you got into AI and it’s like we all have these personal reasons that guide us in these particular directions.

“I think even if you think about the big decisions in life. It’s like you and I were talking before we started recording about how I got into memory research and you got into AI and it’s like we all have these personal reasons that guide us in these particular directions.”
Publisher
Lex Fridman Podcast

28 / evaluation

One of the things I think that people didn’t get was the uncertainty of science and how much we don’t know. And I think every scientist lives in this world of uncertainty, and when I was writing the book, I just became aware of all of these things we don’t know.

“One of the things I think that people didn’t get was the uncertainty of science and how much we don’t know. And I think every scientist lives in this world of uncertainty, and when I was writing the book, I just became aware of all of these things we don’t know.”
Publisher
Lex Fridman Podcast

30 / evaluation

” And I like to use that word optimal now because there’s such a culture of optimization right now. And it’s like I realize I have to redefine what optimal is because for most of the human condition, I think we had a series of stages of life where you have basically adults saying, “Okay”, young adults saying, “I’ve got a child and I’m part of this village and I have to hunt and forage and get things done.

“” And I like to use that word optimal now because there’s such a culture of optimization right now. And it’s like I realize I have to redefine what optimal is because for most of the human condition, I think we had a series of stages of life where you have basically adults saying, “Okay”, young adults saying, “I’ve got a child and I’m part of this village and I have to hunt and forage and get things done.”
Publisher
Lex Fridman Podcast

31 / recommendation

If I am trying to memorize something, let’s say if I have an hour to memorize as many Spanish words as I can, if I just try to do half-an-hour and then later in the day I do half-an-hour, I won’t retain that information as long as if I do half-an-hour today and half-an-hour one week from now.

“If I am trying to memorize something, let’s say if I have an hour to memorize as many Spanish words as I can, if I just try to do half-an-hour and then later in the day I do half-an-hour, I won’t retain that information as long as if I do half-an-hour today and half-an-hour one week from now.”
Publisher
Lex Fridman Podcast

32 / evaluation

How do we tell, I get some mental experience, where did that mental experience come from? It turns out this is a huge problem because essentially our mental experience of remembering something that happened, our mental experience of thinking about something, how do you tell the difference?

“How do we tell, I get some mental experience, where did that mental experience come from? It turns out this is a huge problem because essentially our mental experience of remembering something that happened, our mental experience of thinking about something, how do you tell the difference?”
Publisher
Lex Fridman Podcast
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