Stereopsis without binocular correlation

Abstract In a simple stimulus environment, a diplopic stereoscopic pair gives the same apparent depth whether the pair consists of similar or dissimilar images. This apparent depth may arise in part from a direct comparison of the two eyes images, but it may also be based in part on a process that assigns depth to monocular stimulation on the basis of retinal location: briefly presented monocular stimuli within the nasal retina (temporal field) appear to be more distant than stimuli presented within the temporal retina (nasal field). A model is presented which shows that such a monocular depth response could result from the inadequate stimulation of disparity detectors. However, this response could assist in judging the distance of naturally occurring monocular stimulation.

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