Multiple timescales of normalized value coding underlie adaptive choice behavior.

ABSTRACT: Adaptation is a fundamental process crucial for the efficient coding of sensory information. Recent evidence suggests that similar coding principles operate in decision-related brain areas, where neural value coding adapts to recent reward history. However, the circuit mechanism for value adaptation is unknown, and the link between changes in adaptive value coding and choice behavior is unclear. Here we show that choice behavior in nonhuman primates varies with the statistics of recent rewards. Consistent with efficient coding theory, decision-making shows increased choice sensitivity in lower variance reward environments. Both the average adaptation effect and across-session variability are explained by a novel multiple timescale dynamical model of value representation implementing divisi

SUBMITTER: Zimmermann J 

PROVIDER: S-EPMC6086888 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature