However, objects at different depths project onto slightly disparate points on the two retinas. The brain is able to extract these binocular disparities from the retinal images and create a vivid sensation of depth, such as when one views a 3D-art poster. We study mechanisms by which binocular disparity information is encoded, processed and read out by the brain in order to perceive depth and compute 3D surface structure. Cortical area MT and the perception of stereoscopic depth. Receptive-field dynamics in the central visual pathways.
Depth is encoded in the visual cortex by a specialized receptive field structure.