Editing Color vision (section)

{{Short description|Ability to perceive differences in light frequency}}
{{Use American English|date=August 2021}}
[[File:Filterstef.JPG|thumb|upright=1.3|Colorless, [[green]], and [[red]] [[photographic filter]]s 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 [[Photoreceptor cell|photoreceptors]] by light entering the eye. Those photoreceptors then emit outputs that are propagated through many layers of neurons ultimately leading to higher [[Cognition|cognitive]] functions in 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 the [[evolution of color vision]] within different animal [[taxon|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.<ref>{{cite journal | vauthors = Vorobyev M | title = Ecology and evolution of primate colour vision | journal = Clinical & Experimental Optometry | volume = 87 | issue = 4–5 | pages = 230–8 | date = July 2004 | pmid = 15312027 | doi = 10.1111/j.1444-0938.2004.tb05053.x | s2cid = 40234800 | doi-access = free }}</ref><ref>{{cite journal | vauthors = Carvalho LS, Pessoa D, Mountford JK, Davies WI, Hunt DM |title=The Genetic and Evolutionary Drives behind Primate Color Vision |journal=Frontiers in Ecology and Evolution |date=26 April 2017 |volume=5 |doi=10.3389/fevo.2017.00034|doi-access=free }}</ref><ref>{{cite journal | vauthors = Hiramatsu C, Melin AD, Allen WL, Dubuc C, Higham JP | title = Experimental evidence that primate trichromacy is well suited for detecting primate social colour signals | journal = Proceedings. Biological Sciences | volume = 284 | issue = 1856 | pages = 20162458 | date = June 2017 | pmid = 28615496 | pmc = 5474062 | doi = 10.1098/rspb.2016.2458 }}</ref>