Prestriate cortex

V2 prestriate cortex

V2, also called the prestriate cortex, is believed to have a small role in colour processing by projecting signals from V1 to the V4-complex. Whether or not colour selective cells are present in V2 is still being investigated. Some optical imaging studies have found small clusters of red-green colour selective cells in V1 and V2, but not any blue-yellow colour selective cells. Other studies have shown that V2 is activated by colour stimuli, but not colour after images.[8] V4 also has feedback on V2, suggesting that there is a defined network of communication between the multiple areas of the visual cortex. When GABA, an inhibitory neurotransmitter, was injected into V4 cells, V2 cells experienced a significant decrease in excitability.