Repetition suppression in occipitotemporal cortex despite negligible visual similarity: evidence for postperceptual processing?

ABSTRACT: The reduced neural response in certain brain regions when a task-relevant stimulus is repeated ("repetition suppression", RS) is often attributed to facilitation of the cognitive processes performed in those regions. Repetition of visual objects is associated with RS in the ventral and lateral occipital/temporal regions, and is typically attributed to facilitation of visual processes, ranging from the extraction of shape to the perceptual identification of objects. In two fMRI experiments using a semantic classification task, we found RS in a left lateral occipital/inferior temporal region to a picture of an object when the name of that object had previously been presented in a separate session. In other words, we found RS despite negligible visual similarity between the initial and repeat

SUBMITTER: Horner AJ 

PROVIDER: S-EPMC6870074 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature