A 7T fMRI investigation of hand and tool areas in the lateral and ventral occipitotemporal cortex.

ABSTRACT: Previous studies demonstrated the existence of hand and tool areas in lateral and ventral occipitotemporal cortex (OTC), as well as an overlap between them. We reinvestigated this organization using 7T fMRI, benefiting from a higher signal-to-noise ratio than 3T. This enabled us to include a wider array of categories to achieve a more holistic perspective, and to omit certain spatial preprocessing steps. Despite these improvements, univariate analysis confirmed the existence of hand-tool overlap across OTC, which is striking given the omission of the spatial preprocessing steps that can influence overlap. There was significantly more overlap between hands and tools, compared to other overlap types in the left hemisphere of OTC. The overlap was also larger in the left lateral OTC as compare

SUBMITTER: Pillet I 

PROVIDER: S-EPMC11537398 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature