primary visual cortex in the occipital lobe, same as V1.

visual part of cerebral cortex, so named because of distinct stria of Gennari, q.v.

Refers to the primary visual area of cortex (area 17) located in the walls of the calcarine sulcus of the occipital lobe. This is a thin cortical area (1.5-2.5 mm thick) which has striated appearance visible to the naked eye. This is due to presence of a conspicuous band of tangential fibers (outer band of Baillarger) located in cortical layer IV. In this region, this band is known as the band of Gennari which represents the terminal portions of the geniculo-calcarine tract.