Apparent movement detection in the pigeon.
Pigeons were trained to discriminate between the presence and absence of apparent movement in visual displays. Generalization gradients obtained on the dimension of speed indicated a broad range of movement detection. Extremely accurate discrimination performance on displays varying in direction of movement suggested formation of a "movement concept".
D000818:Animals; D001296:Audiovisual Aids; D003071:Cognition; D010856:Columbidae; D003210:Concept Formation; D004192:Discrimination, Psychological; D008722:Methods; D009039:Motion Perception; D014796:Visual Perception