Behavioral evidence for visual perception of 3-dimensional surface structures in monkeys

Vision Research
T UkaI Fujita


Human subjects perceive two crossing bars, one in front of the other, when shown a cross with disparity added to its horizontal limbs, and they also perceive neon-color spreading when shown a stereoscopic Redies-Spillmann figure. It has thus been hypothesized that the human visual system follows the principle of generic image sampling in reconstructing 3-dimensional (3-D) surface structures. Here we examine whether monkeys also perceive these surface structures. The results indicate that monkeys, like humans, perceive two crossing bars and neon-color spreading and suggest that the principle of generic image sampling may also be applied to visual perception in monkeys.


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Oct 19, 2001·Proceedings of the National Academy of Sciences of the United States of America·S ShimojoIchiro Fujita
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Jul 19, 2000·Journal of Neurophysiology·Takanori UkaIchiro Fujita

Related Concepts

Color Perception
Depth Perception
Discrimination (Process of Differentiation)
Fixation, Ocular
Optical Illusions

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