Functional clusters for shape, texture, and motion encoding in macaque V2.

ABSTRACT: Macaque primary visual cortex (V1) exhibits exquisite columnar organization, while midlevel area V4 does not. Here we investigated the functional organization and representational bases of intervening area V2 with high-density Neuropixels recordings and a variety of visual stimuli-shape, texture, drifting grating, and translational motion patches. We observed dense clusters of similarly tuned neurons often spanning ~500 μm for shape and motion stimuli, and larger for texture stimuli, consistent with a columnar structure. In terms of representational bases, V2 responses were largely explained by stimulus features based on local image statistics: shape tuning is well-modeled by a linear combination of orientation filters, and direction selectivity is stronger with surface compared to object

SUBMITTER: Kim T 

PROVIDER: S-EPMC12637622 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature