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
Borage seed oil eczema was not better than placebo when taken orally. Borage oil may contain the pyrrolizidine alkaloid amabiline, which is hepatotoxic leading to a risk of liver damage. Patients should use borage oil certified free of toxic unsaturated pyrrolizidine alkaloids (UPAs). Consumption of 1-2 g of borage seed oil daily can result in an intake of toxic UPAs approaching 10 ug. The German Federal Health Agency specifies consumption to be limited to 1 ug of UPA daily. Borage oil may be unsafe during pregnancy because preliminary studies suggest borage oil has a teratogenic effect and that its prostaglandin E agonist action