Young-Helmholtz theory of color vision
Pronunciation: yung helm'holts
a theory that there are three color-perceiving elements in the retina: red, green, and blue. Perception of other colors arises from the combined stimulation of these elements; deficiency or absence of any one of these elements results in inability to perceive that color and a misperception of any other color of which it forms a part.
Synonym(s): Helmholtz theory of color vision
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Examples: glitazone, GI cocktail, etc.