3 ms·

This reminds me of a lecture I saw a while back from Robert Sapolsky: https://www.youtube.com/watch?v=GY1x8k79bZE&ab_channel=ChristianG https://www.youtube.com

This reminds me of a lecture I saw a while back from Robert Sapolsky: https://www.youtube.com/watch?v=GY1x8k79bZE&ab_channel=ChristianG https://www.youtube.com/watch?v=GY1x8k79bZE&ab_channel=Chris... TLDR[0]: dopamine is released during anticipation of reward, not when the reward is actually obtained, and the amount correlates with the uncertainty attached to the risk. [0] It's been a while since I saw it and I don't have time to go through it again, so hopefully I'm summarizing accurately.

oehtXRwMkIs 6y ago
This is because dopamine measures prediction error, not uncertainty. Honestly did not want to read the lengthy grandparent comment that was probably wrong but here I can say confidently that these days it's pretty well known that the phenomena you mentioned is due to prediction error. Weird thing though is that it seems to only be measuring positive prediction error, complicating our understanding of how our brains carry out temporal difference learning.