Selectivity for polar, hyperbolic, and Cartesian gratings in macaque visual cortex.

J L Gallant; J Braun; D C Van Essen

doi:10.1126/science.8418487

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PubMed · 8418487

Selectivity for polar, hyperbolic, and Cartesian gratings in macaque visual cortex.

J L Gallant·J Braun·D C Van Essen

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Abstract

The neural basis of pattern recognition is a central problem in visual neuroscience. Responses of single cells were recorded in area V4 of macaque monkey to three classes of periodic stimuli that are based on spatial derivative operators: polar (concentric and radial), hyperbolic, and conventional sinusoidal (Cartesian) gratings. Of 118 cells tested, 16 percent responded significantly more to polar or hyperbolic (non-Cartesian) gratings than to Cartesian gratings and only 8 percent showed a significant preference for Cartesian gratings. Among cells selective for non-Cartesian gratings, those that preferred concentric gratings were most common. Cells selective for non-Cartesian gratings may constitute an important intermediate stage in pattern recognition and the representation of surface shape.

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Animals Electroencephalography Macaca nemestrina Neurons Pattern Recognition, Visual Photic Stimulation Visual Cortex Visual Fields Journal Article Research Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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J L Gallant, J Braun, D C Van Essen. 1993-01-01. Selectivity for polar, hyperbolic, and Cartesian gratings in macaque visual cortex.. https://doi.org/10.1126/science.8418487

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