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Topic: Photopsin

Related Topics

Iodopsin

Opsin

Photoreceptor cell

Rhodopsin

Cone cell

Rod cell

Retina

Eye

Amino acid

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	Photopsin - Psychology Wiki - a Wikia wiki
		Photopsin - Psychology Wiki - a Wikia wiki
		Photopsins are the photoreceptor pigments found in the cone cells of the retina that are the basis of color vision.
		Photopsins are very close analogs of the visual purple rhodopsin that is used in night vision.
	psychology.wikia.com /wiki/Photopsin (453 words)

	Functions of Vitamin A-Vitamins5.com
		The visual effect within the retina is specific to retinal, the aldehyde derived ftom retinol.
		Therods contain a pigment (rhodopsin)consisting of a specific protein (photopsin) bound to ll-cis retinal.
		The possible relationship of retinol and beta-carotene to protection against ftee radical damage is considered later and may be an important function not only of retinol but also of beta-carotene in its own right.
	www.vitamins5.com /functions-of-vitamins/Vitamin-A.html (299 words)

	photopsin \| English \| Dictionary & Translation by Babylon
		Photopsins are the photoreceptor pigments found in the cone cells of the retina that are the basis of color vision.
		Photopsins are very close analogs of the visual purple rhodopsin that is used in night vision.
		Photopsins consist of a protein called opsin and a bound chromophore, the retinal.
	www.babylon.com /definition/photopsin/English (110 words)

	BIG Images News
		Cones are stimulated by light in a similar manner, except that, rather than housing rhodopsin in their conical stacks of membranes, they posses one of three variants of photopsin.
		Each photopsin is responsible for the variations in wavelength absorption among the three cone types.
		Like rhodopsin in rods, photopsin breaks down into two components, opsin and retinal, upon exposure to a sufficient level of light.
	www.big-images.com /1-877-781-9301/News_files/color_perception_March_2007.html (1354 words)

	EXCITATION OF CONES
		The opsins of cones are referred to as photopsins.
		Unlike rods, there are three distinct types of cones, each sensitive to a different wavelength range, reflecting the specific properties of photopsin to which the retinal is bound.
		The three types of photopsin are different to each other and scotopsin.
	www.chm.bris.ac.uk /webprojects2003/white/excitation_of_cones.htm (288 words)

	PHYS1330 The Retina
		When a photon enters a receptor cell, it is absorbed by a small chain molecule called 11-cis-retinal, a chromophore buried in a much larger protein called a photopsin.
		Photopsins are long, twisted chains of several hundred amino acids that form seven columns enclosing the chromophore.
		Rods and the three cone types have slightly different photopsin proteins that account for the different spectral sensitivities.
	www.physics.utoledo.edu /~lsa/_color/18_retina.htm (2525 words)

	Chapter Sixteen - Sense Organs (Site not responding. Last check: )
		In cones, the pigment is photopsin or iodopsin.
		Color vision is made possible by three sets of cones named for the absorption peaks of their photopsins.
		Blue (peak at 420 nm), green (peak 531 nm), and red (peak 558 nm) overlap, to give flexibility for detecting light of varying wavelengths.
	www.accd.edu /SAC/biology/ratorres/torrescourses/printouts/PTR25.htm (3187 words)

	IODOPSIN -- Wald et al. 38 (5): 623 -- The Journal of General Physiology
		bleaches in the light to a mixture of photopsin and all-trans
		from photopsin and a cis isomer of vitamin A, neovitamin Ab
		synthesis; but it is less efficient than photopsin in trapping
	www.jgp.org /cgi/content/abstract/38/5/623 (622 words)

	The Hindu : Night vision
		Cones are the photoreceptors that respond differentially to light across the visible spectrum, providing colour vision and visual acuity in bright light because of higher light threshold simulation.
		They contain a pigment iodopsin which is a conjugated protein of photopsin and retinal.
		The rods help us in scotopic vision or night vision.
	www.hindu.com /thehindu/seta/2003/05/29/stories/2003052900130300.htm (544 words)

	lecture4
		B. rods contain rhodopsin - made up of opsin and retinal
		C. cones contain iodopsin (3 types) and photopsin
		B. Ganglion cells, lateral geniculate cells, and the lower layer of visual cortex cells
	www.personal.kent.edu /~ddelahan/lecture4.htm (173 words)

	[No title] (Site not responding. Last check: )
		rhodopsin, retinaldehyde, opsin, bleaching reaction, dark adaptation, transducins, photopsin, dark current
		What is the role of rhodopsin or photopsin in our sense of sight?
		Why does it take some time to "see" when you enter a darkened room?
	campus.murraystate.edu /academic/faculty/jill.kruper/physchap10.htm (178 words)

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