Induced astigmatism biases the orientation information represented in multivariate electroencephalogram activities.

ABSTRACT: A small physical change in the eye influences the entire neural information process along the visual pathway, causing perceptual errors and behavioral changes. Astigmatism, a refractive error in which visual images do not evenly focus on the retina, modulates visual perception, and the accompanying neural processes in the brain. However, studies on the neural representation of visual stimuli in astigmatism are scarce. We investigated the relationship between retinal input distortions and neural bias in astigmatism and how modulated neural information causes a perceptual error. We induced astigmatism by placing a cylindrical lens on the dominant eye of human participants, while they reported the orientations of the presented Gabor patches. The simultaneously recorded electroencephalogram ac

SUBMITTER: Son S 

PROVIDER: S-EPMC8357008 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature