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Charan Ranganath

๐Ÿ‘ค Speaker
3063 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So that's a big part of it too, is just this kind of what we call retrieval failure.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So that's a big part of it too, is just this kind of what we call retrieval failure.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Yeah, and so memory researchers, we love to cut things up and say, you know, is memory one thing or is it two things? There's two things or there's three things. And so one of the things that there's value in that and especially experimental value in terms of being able to dissect things. In the real world, it's all connected.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Yeah, and so memory researchers, we love to cut things up and say, you know, is memory one thing or is it two things? There's two things or there's three things. And so one of the things that there's value in that and especially experimental value in terms of being able to dissect things. In the real world, it's all connected.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Yeah, and so memory researchers, we love to cut things up and say, you know, is memory one thing or is it two things? There's two things or there's three things. And so one of the things that there's value in that and especially experimental value in terms of being able to dissect things. In the real world, it's all connected.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Speak to your question, working memory is a term that was coined by Alan Baddeley. It's basically thought to be this ability to keep information online in your mind right in front of you at a given time, and to be able to control the flow of that information, to choose what information is relevant, to be able to manipulate it, and so forth.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Speak to your question, working memory is a term that was coined by Alan Baddeley. It's basically thought to be this ability to keep information online in your mind right in front of you at a given time, and to be able to control the flow of that information, to choose what information is relevant, to be able to manipulate it, and so forth.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Speak to your question, working memory is a term that was coined by Alan Baddeley. It's basically thought to be this ability to keep information online in your mind right in front of you at a given time, and to be able to control the flow of that information, to choose what information is relevant, to be able to manipulate it, and so forth.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

And one of the things that Alan did that was quite brilliant was he said, there's this ability to kind of passively store information, see things in your mind's eye or hear your internal monologue. But we have that ability to keep information in mind. But then we also have this separate, what he called a central executive, which is identified a lot with the prefrontal cortex.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

And one of the things that Alan did that was quite brilliant was he said, there's this ability to kind of passively store information, see things in your mind's eye or hear your internal monologue. But we have that ability to keep information in mind. But then we also have this separate, what he called a central executive, which is identified a lot with the prefrontal cortex.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

And one of the things that Alan did that was quite brilliant was he said, there's this ability to kind of passively store information, see things in your mind's eye or hear your internal monologue. But we have that ability to keep information in mind. But then we also have this separate, what he called a central executive, which is identified a lot with the prefrontal cortex.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

It's this ability to control the flow of information that's being kept active based on what it is you're doing. Now, a lot of my early work was basically saying that this working memory, which some memory researchers would call short-term memory, is not at all independent from long-term memory.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

It's this ability to control the flow of information that's being kept active based on what it is you're doing. Now, a lot of my early work was basically saying that this working memory, which some memory researchers would call short-term memory, is not at all independent from long-term memory.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

It's this ability to control the flow of information that's being kept active based on what it is you're doing. Now, a lot of my early work was basically saying that this working memory, which some memory researchers would call short-term memory, is not at all independent from long-term memory.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

That is that a lot of executive function requires learning and you have to have like synaptic change for that to happen. But there's also transient forms of memory. So one of the things I've been getting into lately is the idea that we form internal models of events. The obvious one that I always use is birthday parties, right? So you go to a child's birthday party.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

That is that a lot of executive function requires learning and you have to have like synaptic change for that to happen. But there's also transient forms of memory. So one of the things I've been getting into lately is the idea that we form internal models of events. The obvious one that I always use is birthday parties, right? So you go to a child's birthday party.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

That is that a lot of executive function requires learning and you have to have like synaptic change for that to happen. But there's also transient forms of memory. So one of the things I've been getting into lately is the idea that we form internal models of events. The obvious one that I always use is birthday parties, right? So you go to a child's birthday party.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Once the cake comes out and you just see a candle, you can predict the whole frame, you know, set of events that happens later. And up till that point where the child blows out the candle, you have an internal model in your head of what's going on. And so if you follow people's eyes, it's not actually on what's happening. It's going where the action's about to happen.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Once the cake comes out and you just see a candle, you can predict the whole frame, you know, set of events that happens later. And up till that point where the child blows out the candle, you have an internal model in your head of what's going on. And so if you follow people's eyes, it's not actually on what's happening. It's going where the action's about to happen.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Once the cake comes out and you just see a candle, you can predict the whole frame, you know, set of events that happens later. And up till that point where the child blows out the candle, you have an internal model in your head of what's going on. And so if you follow people's eyes, it's not actually on what's happening. It's going where the action's about to happen.