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visual pigment

visual pigment in Medicine

visual pigment n.
Any of the photopigments in the retinal cones and rods that absorb light and photochemically initiate the phenomenon of vision.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for visual pigment

any of a number of related substances that function in light reception by animals by transforming light energy into electrical (nerve) potentials

Learn more about visual pigment with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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