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VisionRes.,Vol.37,No.12,pp.16831698,1997 @1997ElsevierScienceLtd.AUrightsreserved

Summary: Pergamon
PII: S0042-6989(96)00164-2 Printedin GreatBritain
0042-6989/97$17.00+ 0.00
A Physiological Model for Motion­Stereo
Integration and a Unified Explanation of
Pulfrich-like Phenomena
Recewed6 December1995;m revuedform1Aprd 1996
Many psychophysical and physiological experiments indicate that visual motion analysis and
stereoscopic depth perception are processed together in the brain. However, little computational
effort has been devoted to combining these two visual modalities into a common framework based
on physiological mechanisms. We present such an integrated model in this paper. We have
previously developed a physiologically realistic model for binocular disparity computation (Qian,
1994). Here we demonstrate that under some general and physiological assumptions, our stereo
vision model can be combined naturally with motion energy models to achieve motion-stereo
integration. The integrated model may be used to explain a wide range of experimental
observations regarding motion­stereo interaction. As an example, we show that the model can
provide a unified account of the classical Pulfrich effect (Morgan & Thompson, 1975) and the


Source: Andersen, Richard - Division of Biology, California Institute of Technology
Qian, Ning - Center for Neurobiology and Behavior & Department of Physiology and Cellular Biophysics, Columbia University


Collections: Biology and Medicine