Extrastriate cortex

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Extrastriate cortex is shown in yellow (Brodmann area 19) and orange (Brodmann area 18). Striate cortex (Brodmann area 17) is shown in red.
Extrastriate cortex is shown in yellow (Brodmann area 19) and orange (Brodmann area 18). Striate cortex (Brodmann area 17) is shown in red.

The extrastriate cortex is the region of the occipital cortex of the mammalian brain located next to the striate cortex (which is also known as the primary visual cortex). In terms of Brodmann areas, the extrastriate cortex comprises Brodmann area 18 and Brodmann area 19, while the striate cortex comprises Brodmann area 17.

In primates, the extrastriate cortex includes visual area V2, visual area V3, visual area V4, visual area MT (sometimes called V5), and visual area DP.

The extrastriate cortex is the locus of mid-level vision. Neurons in the extrastriate cortex generally respond to visual stimuli within their receptive fields. These responses are modulated by extraretinal effects, like attention, working memory, and reward expectation.

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