is a theory of
trichromatic color vision – the manner in which the photoreceptor cell s in the eyes of humans and other primates work
Kaynak: Young–Helmholtz theoryCatarrhines are routinely
trichromatic due to a gene duplication of the red-green opsin gene at the base of their lineage, 30 to 40
Kaynak: PrimateWhile the
trichromatic theory defines the way the retina of the eye allows the visual system to detect color with three types of cones
Kaynak: Opponent processIn humans, there are three types of cones sensitive to three different spectra, resulting in
trichromatic color vision . Each individual
Kaynak: Color visionFor human applications, three primary colours are usually used, since human colour vision is
trichromatic . For additive combination of
Kaynak: Primary colorThis suggests that this species may have colour vision - perhaps
trichromatic The giant shovelnose ray (Rhinobatos typus ) also had
Kaynak: Eastern shovelnose rayIn 1801 Thomas Young proposed his
trichromatic theory , based on the observation that any color could be matched with a combination of
Kaynak: Colorat least dichromatic for most of mammalian species, with certain families (such as Hominidae ) possessing a
trichromatic color perception.
Kaynak: Mammalian eyeThis provided the first biological demonstration in support of the Young-Helmholz
trichromatic theory . He also gave name to the S-
Kaynak: Gunnar Svaetichinred phosphors to provide "
trichromatic" lighting technology, a high-efficiency white light used for standard illumination in indoor lighting.
Kaynak: TerbiumHumans and primates are unique as they possess
trichromatic color vision, and are able to discern between violet short wave (SW), green
Kaynak: Blind animalsThey have re-developed
trichromatic color vision since that time, by the mechanism of gene duplication , being under unusually high
Kaynak: Evolution of color visionThe classical color mechanism models are Young –Helmholtz 's
trichromatic model and Hering 's opponent-process model . Though these two
Kaynak: Color model