Exploration of the functional consequences of fixational eye movements in the absence of a fovea.

ABSTRACT: A recent theory posits that ocular drifts of fixational eye movements serve to reformat the visual input of natural images, so that the power of the input image is equalized across a range of spatial frequencies. This "spectral whitening" effect is postulated to improve the processing of high-spatial-frequency information and requires normal fixational eye movements. Given that people with macular disease exhibit abnormal fixational eye movements, do they also exhibit spectral whitening? To answer this question, we computed the power spectral density of movies of natural images translated in space and time according to the fixational eye movements (thus simulating the retinal input) of a group of observers with long-standing bilateral macular disease. Just as for people with normal vision,

SUBMITTER: Agaoglu MN 

PROVIDER: S-EPMC7343529 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature