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  • Title: Solving visual correspondence between the two eyes via domain-based population encoding in nonhuman primates.
    Author: Chen G, Lu HD, Tanigawa H, Roe AW.
    Journal: Proc Natl Acad Sci U S A; 2017 Dec 05; 114(49):13024-13029. PubMed ID: 29180437.
    Abstract:
    Stereoscopic vision depends on correct matching of corresponding features between the two eyes. It is unclear where the brain solves this binocular correspondence problem. Although our visual system is able to make correct global matches, there are many possible false matches between any two images. Here, we use optical imaging data of binocular disparity response in the visual cortex of awake and anesthetized monkeys to demonstrate that the second visual cortical area (V2) is the first cortical stage that correctly discards false matches and robustly encodes correct matches. Our findings indicate that a key transformation for achieving depth perception lies in early stages of extrastriate visual cortex and is achieved by population coding.
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