Differential Representations of Perceived and Retrieved Visual Information in Hippocampus and Cortex.

ABSTRACT: Memory retrieval is thought to depend on interactions between hippocampus and cortex, but the nature of representation in these regions and their relationship remains unclear. Here, we performed an ultra-high field fMRI (7T) experiment, comprising perception, learning and retrieval sessions. We observed a fundamental difference between representations in hippocampus and high-level visual cortex during perception and retrieval. First, while object-selective posterior fusiform cortex showed consistent responses that allowed us to decode object identity across both perception and retrieval one day after learning, object decoding in hippocampus was much stronger during retrieval than perception. Second, in visual cortex but not hippocampus, there was consistency in response patterns between pe

SUBMITTER: Lee SH 

PROVIDER: S-EPMC7302513 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature