extrastriate cortex

n. Region of the occipital lobe beside the primary visual area (V1, striate cortex, located in the calcarine fissure in the occipital lobe). It corresponds to the Brodmann's areas 17 and 19, whereas the striate cortex corresponds to the Brodmann's area 17. In primates, the extrastriate cortex is subdivided into four areas, known as V2 (coding simple visual properties such as orientation, spatial frequency, and color), V3 (motion and localization), V4 (orientation, spatial frequency, and color of objects of some complexity), and V5 (complex visual motion stimuli).

- AA

► See also PRIMARY VISUAL AREA and STRIATE CORTEX