Volatility Facilitates Value Updating in the Prefrontal Cortex.

ABSTRACT: Adaptation of learning and decision-making might depend on the regulation of activity in the prefrontal cortex. Here we examined how volatility of reward probabilities influences learning and neural activity in the primate prefrontal cortex. We found that animals selected recently rewarded targets more often when reward probabilities of different options fluctuated across trials than when they were fixed. Additionally, neurons in the orbitofrontal cortex displayed more sustained activity related to the outcomes of their previous choices when reward probabilities changed over time. Such volatility also enhanced signals in the dorsolateral prefrontal cortex related to the current but not the previous location of the previously rewarded target. These results suggest that prefrontal activity r

SUBMITTER: Massi B 

PROVIDER: S-EPMC6085887 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature