BRAIN - The encoding of color categories in brain

(Medical Xpress) —The spectrum of visible light, like that of audible sound, spans a range of frequencies that is easy to define. There is both a minimum, and a maximum, that we can perceive. Our perception of color, while continuous, naturally partitions itself into categories that defy any sense of orderly progression, almost as if they are some kind of strange smells. Indeed if we combine the blue from the top end of the spectrum, with red fro ...

http://medicalxpress.com/news/2014-03-encoding-categories-brain.htm