BISC 230Lgx Lecture Notes - Lecture 16: Binocular Disparity, Horopter, Stereopsis
9 Apr 2016
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Where objects are perceived on the two reinas (where the images fall on the same corresponding points on the reinas), objects are on the horopter o. Can be on the fovea or in other places on the reina. Binocular disparity: when images are not at corresponding reinal points, objects are not on the horopter o o. Crossed disparity: disparity when objects are in front of the horopter (closer) Uncrossed disparity: objects are behind the horopter (further away) Fixaion point: an image"s distance on fovea provides info on how far away it is from the ixaion point. In the visual cortex (back of the brain): Zero disparity neurons: is acivated when both eye inputs have zero disparity o. Binocular disparity neurons: is acivated when both eye inputs are at diferent locaions on the reina. Only movement in one direcion is detected by a single neuron.
