Ewald Hering proposed the opponent process theory of this trait, which suggests that antagonist chemicals combine to give humans this ability.
Ewald Hering proposed the opponent process theory of this trait, which suggests that antagonist chemicals combine to give humans this ability. The Young-Helmholtz theory was the earliest theory of this trait, which classifies certain cells as "short preferring," "medium preferring" or "long preferring." Individuals who lack the ability to completely use this sense may be afflicted with (*) protanopia or deuteranopia. The chemist John Dalton was impaired in this sense and names the disorder that afflicts it. In the Ishihara test of this ability, agents will either discern the number '71' or '74' composed of various dots. In humans, cone cells, but not rod cells, are responsible for this sense. For 10 points, name this ability of an organism to distinguish hues.
Ewald Hering proposed the opponent process theory of this trait, which suggests that antagonist chemicals combine to give humans this ability.
color vision [prompt on vision or eyesight or sight or seeing]