Opponent-color units in the thalamus of the pigeon (Columba livia).
D000818:Animals; D003116:Color; D010856:Columbidae / Q000502:physiology*; D005829:Geniculate Bodies; D009897:Optic Chiasm; D010775:Photic Stimulation; D013788:Thalamus / Q000033:anatomy & histology / Q000502:physiology*