An Information-Driven 2-Pathway Characterization of Occipitotemporal and Posterior Parietal Visual Object Representations.

ABSTRACT: Recent studies have demonstrated the existence of rich visual representations in both occipitotemporal cortex (OTC) and posterior parietal cortex (PPC). Using fMRI decoding and a bottom-up data-driven approach, we showed that although robust object category representations exist in both OTC and PPC, there is an information-driven 2-pathway separation among these regions in the representational space, with occipitotemporal regions arranging hierarchically along 1 pathway and posterior parietal regions along another pathway. We obtained 10 independent replications of this 2-pathway distinction, accounting for 58-81% of the total variance of the region-wise differences in visual representation. The separation of the PPC regions from higher occipitotemporal regions was not driven by a differen

SUBMITTER: Vaziri-Pashkam M 

PROVIDER: S-EPMC7302692 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature