calcarine sulcus

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A deep horizontal groove that bisects the inner or medial surface of the occipital lobe of each cerebral hemisphere, running from the parieto-occipital sulcus to the back of the lobe. The gyri on both sides of this sulcus are occupied by the primary visual cortex (Area V1). Also called the calcarine fissure. [From Latin calcar, calcaris a spur, alluding to the wishbone or spur shape formed by both calcarine sulci taken together]

Subjects: Psychology.

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