Similarity judgments and cortical visual responses reflect different properties of object and scene categories in naturalistic images.

ABSTRACT: Numerous factors have been reported to underlie the representation of complex images in high-level human visual cortex, including categories (e.g. faces, objects, scenes), animacy, and real-world size, but the extent to which this organization reflects behavioral judgments of real-world stimuli is unclear. Here, we compared representations derived from explicit behavioral similarity judgments and ultra-high field (7T) fMRI of human visual cortex for multiple exemplars of a diverse set of naturalistic images from 48 object and scene categories. While there was a significant correlation between similarity judgments and fMRI responses, there were striking differences between the two representational spaces. Behavioral judgements primarily revealed a coarse division between man-made (including

SUBMITTER: King ML 

PROVIDER: S-EPMC6591094 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature