Patterns of Pupillary Activity During Binocular Disparity Resolution.

ABSTRACT: This study examined the dynamic coordination between disconjugate, vergence eye movements, and pupil size in 52 normal subjects during binocular disparity stimulation in a virtual reality display. Eye movements and pupil area were sampled with a video-oculographic system at 100 Hz during performance of two tasks, (1) fusion of a binocular disparity step (±1.5° of visual angle in the horizontal plane) and (2) pursuit of a sinusoidally varying binocular disparity stimulus (0.1 Hz, ±2.6° of visual angle in the horizontal plane). Pupil size data were normalized on the basis of responses to homogeneous illumination increments ranging from 0.42 to 65.4 cd/m². The subjects produced robust vergence eye movements in response to disparity step shifts and high fidelity sinusoidal vergence

SUBMITTER: Balaban CD 

PROVIDER: S-EPMC6276540 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature