Colour centre in humans as an area specialized for colour vision. 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
Colour guard and Regimental Colours. Colour guards in the artillery units are technically the lead gun's crew and leader (except in the Honourable Artillery Company which uses both guns and Colours) and there are no colour guards in the rifle regiments (nowadays The Rifles), the Royal Gurkha Rifles (which use the Queen's Truncheon) and in the Royal Hospital in Chelsea. All of the RN's Queen's Colours are identical. Within the RN a colour guard unit consists of: In the Chinese People's Liberation Army, colour guards composed of In the parades of the 1950s, this configuration was present in every unit of the