Color vision

Colorless, green, and red photographic filters as imaged by camera

Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different frequencies independently of light intensity.

Color perception is a part of the larger visual system and is mediated by a complex process between neurons that begins with differential stimulation of different types of photoreceptors by light entering the eye. Those photoreceptors then emit outputs that are propagated through many layers of neurons and then ultimately to the brain. Color vision is found in many animals and is mediated by similar underlying mechanisms with common types of biological molecules and a complex history of evolution in different animal taxa. In primates, color vision may have evolved under selective pressure for a variety of visual tasks including the foraging for nutritious young leaves, ripe fruit, and flowers, as well as detecting predator camouflage and emotional states in other primates.[1][2][3]

  1. ^ Vorobyev M (July 2004). "Ecology and evolution of primate colour vision". Clinical & Experimental Optometry. 87 (4–5): 230–8. doi:10.1111/j.1444-0938.2004.tb05053.x. PMID 15312027. S2CID 40234800.
  2. ^ Carvalho LS, Pessoa D, Mountford JK, Davies WI, Hunt DM (26 April 2017). "The Genetic and Evolutionary Drives behind Primate Color Vision". Frontiers in Ecology and Evolution. 5. doi:10.3389/fevo.2017.00034.
  3. ^ Hiramatsu C, Melin AD, Allen WL, Dubuc C, Higham JP (June 2017). "Experimental evidence that primate trichromacy is well suited for detecting primate social colour signals". Proceedings. Biological Sciences. 284 (1856): 20162458. doi:10.1098/rspb.2016.2458. PMC 5474062. PMID 28615496.

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