Charan Ranganath

Studies of expertise showing how experts like chess experts can memorize so much in such a short amount of time because of the schemas they have for chess. But then also showing that those lead to all sorts of distortions in memory. The discovery that the act of remembering can change the memory, can strengthen it, but it can also distort it if you get misinformation at the time.

Studies of expertise showing how experts like chess experts can memorize so much in such a short amount of time because of the schemas they have for chess. But then also showing that those lead to all sorts of distortions in memory. The discovery that the act of remembering can change the memory, can strengthen it, but it can also distort it if you get misinformation at the time.

And it can also strengthen or weaken other memories that you didn't even recall. So just this whole idea of memory as an ecosystem I think was a big discovery. This idea of breaking up our continuous experience into these discrete events I think was a major discovery.

And it can also strengthen or weaken other memories that you didn't even recall. So just this whole idea of memory as an ecosystem I think was a big discovery. This idea of breaking up our continuous experience into these discrete events I think was a major discovery.

And it can also strengthen or weaken other memories that you didn't even recall. So just this whole idea of memory as an ecosystem I think was a big discovery. This idea of breaking up our continuous experience into these discrete events I think was a major discovery.

Maybe, yeah. I mean, you know, and again, there's controversial ideas about this, right? But it's like, yeah, this idea that, and this gets back to just this common experience of you walk into the kitchen and you're like, why am I here? And you just end up grabbing some food from the fridge. And then you go back and you're like, oh, wait a minute, I left my watch in the kitchen.

Maybe, yeah. I mean, you know, and again, there's controversial ideas about this, right? But it's like, yeah, this idea that, and this gets back to just this common experience of you walk into the kitchen and you're like, why am I here? And you just end up grabbing some food from the fridge. And then you go back and you're like, oh, wait a minute, I left my watch in the kitchen.

Maybe, yeah. I mean, you know, and again, there's controversial ideas about this, right? But it's like, yeah, this idea that, and this gets back to just this common experience of you walk into the kitchen and you're like, why am I here? And you just end up grabbing some food from the fridge. And then you go back and you're like, oh, wait a minute, I left my watch in the kitchen.

That's what I was looking for. Mm-hmm. And so what happens is that you have a little internal model of where you are, what you're thinking about. And when you cross from one room to another, those models get updated. And so now when you're in the kitchen, you have to go back and mentally time travel back to this earlier point to remember what it was that you went there for.

That's what I was looking for. Mm-hmm. And so what happens is that you have a little internal model of where you are, what you're thinking about. And when you cross from one room to another, those models get updated. And so now when you're in the kitchen, you have to go back and mentally time travel back to this earlier point to remember what it was that you went there for.

That's what I was looking for. Mm-hmm. And so what happens is that you have a little internal model of where you are, what you're thinking about. And when you cross from one room to another, those models get updated. And so now when you're in the kitchen, you have to go back and mentally time travel back to this earlier point to remember what it was that you went there for.

And so these event boundaries, turns out like in our research, and again, I don't want to make it sound like we've figured out everything, but in our research, one of the things that we found is that Basically, as people get older, the activity in the hippocampus at these event boundaries tends to go down.

And so these event boundaries, turns out like in our research, and again, I don't want to make it sound like we've figured out everything, but in our research, one of the things that we found is that Basically, as people get older, the activity in the hippocampus at these event boundaries tends to go down.

And so these event boundaries, turns out like in our research, and again, I don't want to make it sound like we've figured out everything, but in our research, one of the things that we found is that Basically, as people get older, the activity in the hippocampus at these event boundaries tends to go down.

But independent of age, if I give you outside of the scanner, you're done with the scanner, I just scan you while you're watching a movie, you just watch it. You come out, I give you a test of memory for stories.

But independent of age, if I give you outside of the scanner, you're done with the scanner, I just scan you while you're watching a movie, you just watch it. You come out, I give you a test of memory for stories.

But independent of age, if I give you outside of the scanner, you're done with the scanner, I just scan you while you're watching a movie, you just watch it. You come out, I give you a test of memory for stories.

What happens is you find this incredible correlation between the activity in the hippocampus at these singular points in time, these event boundaries, and your ability to just remember a story outside of the scanner later on. So it's marking this ability to encode memories, just these little snippets of neural activity. So I think that's a big one.

What happens is you find this incredible correlation between the activity in the hippocampus at these singular points in time, these event boundaries, and your ability to just remember a story outside of the scanner later on. So it's marking this ability to encode memories, just these little snippets of neural activity. So I think that's a big one.

What happens is you find this incredible correlation between the activity in the hippocampus at these singular points in time, these event boundaries, and your ability to just remember a story outside of the scanner later on. So it's marking this ability to encode memories, just these little snippets of neural activity. So I think that's a big one.