bar detector

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A type of cell in the primary visual cortex (Area V1) that responds maximally to a bar (lighter than the surround for some cells, darker than the surround for others) oriented at a particular angle on the retina, the response being strongest for a moving bar-shaped stimulus. See also complex cell, end-stopped receptive field, feature detector, hypercomplex cell, simple cell. Compare edge detector.

Subjects: Psychology.

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