Visuospatial processing in early brain-based visual impairment is associated with differential recruitment of dorsal and ventral visual streams.

ABSTRACT: Visuospatial processing impairments are prevalent in individuals with cerebral visual impairment (CVI) and are typically ascribed to "dorsal stream dysfunction" (DSD). However, the contribution of other cortical regions, including early visual cortex (EVC), frontal cortex, or the ventral visual stream, to such impairments remains unknown. Thus, here, we examined fMRI activity in these regions, while individuals with CVI (and neurotypicals) performed a visual search task within a dynamic naturalistic scene. First, behavioral performance was measured with eye tracking. Participants were instructed to search and follow a walking human target. CVI participants took significantly longer to find the target, and their eye gaze patterns were less accurate and less precise. Second, we used the same

SUBMITTER: Pamir Z 

PROVIDER: S-EPMC11484488 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature