Light adaptation of the receptors: increment threshold functions for the frog's rods and cones.
D000200:Action Potentials / Q000187:drug effects; D000221:Adaptation, Ocular; D000818:Animals; D001224:Aspartic Acid / Q000494:pharmacology; D003470:Culture Media; D003623:Dark Adaptation; D066298:In Vitro Techniques; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000187:drug effects / Q000502:physiology*; D011894:Rana pipiens; D013053:Spectrophotometry; D014785:Vision, Ocular
D003470:Culture Media; D001224:Aspartic Acid