Selectivity for polar, hyperbolic, and Cartesian gratings in macaque visual cortex
摘要：
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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关键词：
Experimental/ brain neurophysiology vision/ pattern recognition neural basis surface shape representation single cell responses sinusoidal gratings polar gratings hyperbolic gratings Cartesian gratings macaque visual cortex visual neuroscience area V4 macaque monkey periodic stimuli spatial derivative operators concentric gratings/ A8732E Physiology of the eye nerve structure and function
DOI：
10.1126/science.8418487
被引量：
年份：
1993
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万方医学
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