visual pigment


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visual pigment

A light-absorbing compound in the photoreceptor cells of the retina that converts light energy into a nerve impulse that is passed from the receptor cells to the optic nerve.
See also: pigment
References in periodicals archive ?
The RPE cells perform several functions, including absorption of light, enabling the turnover of photoreceptor outer segments, formation of visual pigments by storing and releasing vitamin A.
exoculata has a visual pigment, and it has it in very large quantities -- at the very least five times more than the usual amount of pigment in other shrimp," he says.
An expert in visual pigments, Szuts believes the rhodopsin from the shrimp offers an important clue that cannot be overlooked.
Photo: Visual pigment similarities: All four human pigments and bovine rhodopsin have the same amino acid in the locations indicated by empty circles; similar amino acids at the stippled circles; and at least one "nonconservative" amino acid difference at the filled circles.
Of particular importance is the orange snout coloration of male kelp bass, as red-sensitive visual pigments have not been found in other reef fishes (Losey et al.
Cones rely on light-sensing molecules that bind together to make up visual pigments.
Whereas we humans have four visual pigments in our eyes, they have 16.
Washington, July 28 (ANI): In a new research, s team of scientists has detected cones and their visual pigments in two flower-visiting species of bat, which has lead them to conclude that bats' eyes are adapted for both daylight and UV (Ultraviolet) vision.