Peter Dayan (invited speaker)

Computational neuromodulation

Gatsby Institute

Physiological, pharmacological and behavioral evidence suggests that the neuromodulators dopamine and acetylcholine are playing specific computational roles in classical and operant conditioning in rats and monkeys. The phasic activity of dopaminergic cells in the ventral tegmental area and substantia nigra appears to report errors in the predictions of future reward; cholinergic projections to the cortex and hippocampus appear to mediate attentional competition between possibly predictive stimuli. In this talk, I will review the computational framework of reinforcement learning that has been used to model this evidence, and discuss some of the shortcomings and resulting extensions of this framework.
Monday, June 5, 2023
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