Context-dependent persistency as a coding mechanism for robust and widely distributed value coding.

ABSTRACT: Task-related information is widely distributed across the brain with different coding properties, such as persistency. We found in mice that coding persistency of action history and value was variable across areas, learning phases, and task context, with the highest persistency in the retrosplenial cortex of expert mice performing value-based decisions where history needs to be maintained across trials. Persistent coding also emerged in artificial networks trained to perform mouse-like reinforcement learning. Persistency allows temporally untangled value representations in neuronal manifolds where population activity exhibits cyclic trajectories that transition along the value axis after action outcomes, collectively forming cylindrical dynamics. Simulations indicated that untangled persis

SUBMITTER: Hattori R 

PROVIDER: S-EPMC8813889 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature