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#106 – Matt Botvinick: Neuroscience, Psychology, and AI at DeepMind
Lex Fridman Podcast
The Prefrontal Cortex Supports Reinforcement Learning
The prefrontal cortex is highly recurrent. We know that it's an important locus for working memory, for activation based memory. So maybe the prefrontal cortex supports reinforcement learning. In other words, what is reinforcement learning? You take an action, you see how much reward you got, you update your policy of behavior. Maybe the prefrontal cortex is doing that sort of thing strictly in its activation patterns. It's keeping around a memory in its activity patterns of what you did, how much rewardyou got. And it's using that activity-based memory as a basis for updating behavior.
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