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| Description: Light adaptation occurs when an individual moves from dark surroundings to light ones. It occurs in seconds. Dark adaptation takes place when one moves from a lighted area into a dark one. This takes minutes to complete. Part of this difference is related to the rates of bleaching and regeneration of photopigments in rods and cones. Light causes rod photoreceptors to decrease their release of the inhibitory neurotransmitter glutamate. Picture Stats: Views: 250 Filesize: 263.24kB Height: 1000 Width: 566 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41340 |