Binocular vision: The relations among eye vergence, stereo correspondence, and retinal disparities

Abstract

In this paper, I review recent psychological and neuroscientific studies that have investigated eye vergence and binocular depth perception. Eye vergence refers to the disconjugate rotations of both eyes, while binocular depth perception arises from processing retinal disparities in visual cortex. Recent studies indicate that (a) disparity-induced horizontal, vertical, and torsional vergence all occur relatively quickly to the presentation of visual stimuli and (b) multiple brain regions are involved in binocular depth perception. Based on these findings, I propose a hypothesis about how the visual system resolves the problem of stereo correspondence and processes horizontal, vertical, and torsional disparities.