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The Journal of Neuroscience, December 1994, 74(12): 7381-7392 Transparent Motion Perception as Detection of Unbalanced Motion
 

Summary: The Journal of Neuroscience, December 1994, 74(12): 7381-7392
Transparent Motion Perception as Detection of Unbalanced Motion
Signals. III. Modeling
Ning Qian,a Richard A. Andersen, and Edward H. Adelson
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
In the preceding two companion articles we studied the con-
ditions under which transparent motion perception occurs
through psychophysical experiments, and investigated the
underlining neural mechanisms through physiological re-
cordings. The main finding of our perceptual experiments
was that whenever a display has finely balanced motion
signals in all local areas, it is perceptually nontransparent,
and that transparent displays always contain motion signals
in different directions that are either spatially unbalanced,
or unbalanced in their disparity or spatial frequency con-
tents. In the physiological experiments, we found two stages
in the processing of transparent stimuli. The first stage is
located primarily in area Vl . At this stage motion measure-
ments are made and Vl cells respond well to both the bal-
anced, nontransparent stimuli and the unbalanced, percep-

  

Source: Andersen, Richard - Division of Biology, California Institute of Technology

 

Collections: Biology and Medicine