The dynamics of cortical interactions in visual recognition of object category: living versus nonliving.

ABSTRACT: Noninvasive brain imaging studies have shown that higher visual processing of objects occurs in neural populations that are separable along broad semantic categories, particularly living versus nonliving objects. However, because of their limited temporal resolution, these studies have not been able to determine whether broad semantic categories are also reflected in the dynamics of neural interactions within cortical networks. We investigated the time course of neural propagation among cortical areas activated during object naming in 12 patients implanted with subdural electrode grids prior to epilepsy surgery, with a special focus on the visual recognition phase of the task. Analysis of event-related causality revealed significantly stronger neural propagation among sites within ventral

SUBMITTER: Usami K 

PROVIDER: S-EPMC10152084 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature