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Computational Neuroscience Journal Club

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If you have a question about this talk, please contact Rodrigo Echeveste .

Rodrigo Echeveste will present:

â€ĸ Neural implementation of Bayesian inference in a sensorimotor behavior

â€ĸ Timothy R. Darlington, Jeffrey M. Beck and Stephen G. Lisberger

â€ĸ Nature Neuroscience (2018)

â€ĸ https://www.nature.com/articles/s41593-018-0233-y/

Abstract: Actions are guided by a Bayesian-like interaction between priors based on experience and current sensory evidence. Here we unveil a complete neural implementation of Bayesian-like behavior, including adaptation of a prior. We recorded the spiking of single neurons in the smooth eye-movement region of the frontal eye fields (FEFSEM), a region that is causally involved in smooth-pursuit eye movements. Monkeys tracked moving targets in contexts that set different priors for target speed. Before the onset of target motion, preparatory activity encodes and adapts in parallel with the behavioral adaptation of the prior. During the initiation of pursuit, FEFSEM output encodes a maximum a posteriori estimate of target speed based on a reliability-weighted combination of the prior and sensory evidence. FEFSEM responses during pursuit are sufficient both to adapt a prior that may be stored in FEFSEM and, through known downstream pathways, to cause Bayesian-like behavior in pursuit.

This talk is part of the Computational Neuroscience series.

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