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photopigment

NOUN
  1. a special pigment found in the rods and cones of the retina

How To Use photopigment In A Sentence

  • It could involve retinal photoreceptors, extraretinal photoreceptors in the pineal or elsewhere, photopigments such as cryptochromes within the retina or brain, or it might be mediated through a non-visual pathway.
  • Their physiological basis is reasonably well understood; they result from the saturation or bleaching of retinal photopigments under intense or prolonged illumination.
  • The ability to see the world as humans do, he says, ‘requires an additional sensor—or photopigment—and the nervous system being able to compare the signals.’ Three Color Blind Mice: See How They See : Edward Champion’s Reluctant Habits
  • Vision scientists knew that retinal, the derivative of vitamin A, was part of every photopigment molecule and that various forms of vitamin A existed. Mind Hacks: changing diet might allow you to see infrared
  • For example, he would claim that a photopigment without any linkers or down stream signalling molecules would be useless, and unselectable by natural selection. Blind Mice vs Behe; the Evolution of Vision - The Panda's Thumb
  • Invertebrates have rhabodomeric cells that use a special version of the photopigment called r-opsin, and activate cells by a particular pathway called a phospholipase-C cascade. PZ Myers - The Deepest Links (on Evolution)
  • Every photopigment consists of a derivative of vitamin A linked to a protein molecule called an opsin.
  • The photopigment melanopsin has been suggested to act as a dominant photoreceptor in nonvisual photoreception including resetting of the circadian clock (entrainment), direct tuning or masking of vital status (activity, sleep/wake cycles, etc.), and the pupillary light reflex (PLR). PLoS ONE Alerts: New Articles
  • Japan The photopigment melanopsin has been suggested to act as a dominant photoreceptor in nonvisual photoreception including resetting of the circadian clock (entrainment), direct tuning or masking of vital status (activity, sleep/wake cycles, etc.), and the pupillary light reflex PLoS ONE Alerts: New Articles
  • There is no physiological evidence for a third photopigment sensitive to blue wavelengths.
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