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Motion detectors and motion segregation

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image of Spatial Vision
For more content, see Multisensory Research and Seeing and Perceiving.

The response of motion detectors necessarily confound image velocity with image structure. In particular, even a rigidly moving image (with a uniform velocity field) will give rise to non-uniform detector responses. A mathematical framework has been proposed on how to intrinsically compare motion detectors' responses so that their differences will reflect the true differences in image velocity (Zhang and Wu, Proc. Natl. Acad. Sci. USA 87, 7819-7823, 1990). Here, this notion of 'intrinsic differentiation' was implemented by introducing a y-matrix determined by the image spatial gradients. The perceptual phenomenon of random-dot motion segregation was successfully simulated.

Affiliations: 1: Department of Psychology, University of Michigan, 525 East University Ave., Ann Arbor, MI 48109, USA


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