Visual search performance in cerebral visual impairment is associated with altered alpha band oscillations.

ABSTRACT: Individuals with cerebral visual impairment (CVI) often present with deficits related to visuospatial processing. However, the neurophysiological basis underlying these higher order perceptual dysfunctions have not been clearly identified. We assessed visual search performance using a novel virtual reality based task paired with eye tracking to simulate the exploration of a naturalistic scene (a virtual toy box). This was combined with electroencephalography (EEG) recordings and an analysis pipeline focusing on time frequency decomposition of alpha oscillatory activity. We found that individuals with CVI showed an overall impairment in visual search performance (as indexed by decreased success rate, as well as increased reaction time, visual search area, and gaze error) compared to control

SUBMITTER: Bennett CR 

PROVIDER: S-EPMC8488018 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature