Coding of visual patterns and textures in monkey inferior temporal cortex

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Abstract
Neural coding for texture features of visual objects was investigated in monkey inferior temporal cortex by inactivating intrinsic GABAergic inhibition. The inactivation enabled a substantial number of cells to respond to originally ineffective texture pattern that had a particular feature distinct from the originally effective pattern, or to ineffective texture and non-texture stimuli that possessed a component feature of the originally effective texture. Cells that showed selectivity changes related to a texture feature were often met along a vertical recording track. We suggest that a texture feature is coded by a group of cells which signal different aspects of the texture. The coding occurs at different processing levels, from extracting a particular feature within patterns to detecting complex texture features combined with color and shape of natural objects.

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