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Science. 1986 Apr 4;232(4746):95-7.

Mechanisms of human motion perception revealed by a new cyclopean illusion.


A new cyclopean illusion of motion may bear on neural mechanisms of direction selectivity. Stationary flickering patterns were presented to each eye, and the resulting fused pattern was perceived to be moving. To determine direction of motion, the visual system seems to integrate image components differing by 90 degrees in spatial and temporal phase. On the other hand, image speed seems to be derived from displacement of features over time. A model of neural direction selectivity is discussed in light of these results.

[Indexed for MEDLINE]

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