Simple reaction times to cyclopean stimuli reveal that the binocular system is tuned to react faster to near than to far objects.

ABSTRACT: Binocular depth perception is an important mechanism to segregate the visual scene for mapping relevant objects in our environment. Convergent evidence from psychophysical and neurophysiological studies have revealed asymmetries between the processing of near (crossed) and far (uncrossed) binocular disparities. The aim of the present study was to test if near or far objects are processed faster and with higher contrast sensitivity in the visual system. We therefore measured the relationship between binocular disparity and simple reaction time (RT) as well as contrast gain based on the contrast-RT function in young healthy adults. RTs were measured to suddenly appearing cyclopean target stimuli, which were checkerboard patterns encoded by depth in dynamic random dot stereograms (DRDS). The

SUBMITTER: Horvath G 

PROVIDER: S-EPMC5755738 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature