Winter Olympics Deep Dive: Ice Physics, Performance Pressure, and Climate Change
EP 26
·1:22:18

Dimensionality reduction + reward axis vs target-prep axis

Watch Winter Olympics Deep Dive: Ice Physics, Performance Pressure, and Climate Change

Transcript

This chapter, from the episode video's captions · 522 words

1:22:18jackpot. And that was like those neurons care about it's like kind of telling the rest of the brain, hey there's going to be a jackpot. like we we got to lock in. Okay. Then there's another one which is the target preparation axis. Okay. This is the dimension within the target plane that is critical to the reach which is part of the which is part of the task. Like how far am I going to reach for the >> for the macak to get this reward right >> and that target axis has the same behavior as what we saw in behavior. Meaning >> for low reward I'm not that high on the target axis. Mhm. >> But as I go to jackpot reward again, I come back. >> Okay. So these neurons, these specific

1:22:59neurons that care about the target axis, the geometry of the brain has changed to where this target axis is actually the thing that is causing that choking under pressure. The the point being that there there is now a neur neurological signature >> that maps onto the behavioral uh experimental data around this idea of there being sort of this diminishing uh as the jackpot gets sufficiently high >> in task completion. >> Exactly. Exactly. And now we can actually think about a mechanism, right? And what they came up with is something called the expansion then collapse mechanism. Here's the [clears throat] idea. Okay. for small reward.

1:23:41I'm influenced by reward a lot. >> Okay. But as I move in this trajectory, there's some optimal space that I want my brain to be in. Okay. There's like an optimal location in all of my neurons, in all of my neural space that I want to be in. Okay. But when I get this massive motivational signal from the jackpot trials, what that's going to drew do is put my system into overdrive >> and it's going to push my system away from this optimal >> setting. >> Yep. >> Right. Yes. >> To where now my neural states abruptly like collapse on top of each other. >> And I I can't actually discern between like what to do

1:24:23when I have the task in front of me. >> Mhm. Because like all of my neurons are in overdrive. I've got stress neurons coming in. I've got like the future planning neurons coming in of like, oh, what am I going to do when I get, you know, like what's going to happen in the future? All of the past mistakes that I've done. That stuff's coming in. The memories coming in. All of the stress is like trying to like get into this >> flight or fight response and it's putting your brain into overdrive and then you get an a physical failure because now you can no longer actually do the task as well as you once could. Just just I want to bring up this chart again which is this uh neural bias. Why do animals choke? And we're looking at an X Y and Z axis. Neuron one is let's

From Winter Olympics Deep Dive: Ice Physics, Performance Pressure, and Climate Change

Why ice is slippery, why athletes choke, and why winter sports are changing.