A sample of the photos used to assess the human eye’s response to natural scenes. The response of photoreceptors in the eye are helping researchers understand why our brain perceives color as a ...

Since a 19th century theory put forward by German physiologist Ewald Hering, color scientists have considered the hues red, ...

Biologists and linguists alike have long puzzled over the universal human tendency to see and name colors as a combination of four "pure" hues—red, yellow, green and blue. Most people and most ...