New data on the physiology of two-way conditioned connections.
D000818:Animals; D002415:Cats; D003216:Conditioning, Operant / Q000502:physiology*; D004285:Dogs; D004594:Electrophysiology; D005829:Geniculate Bodies / Q000502:physiology; D009949:Orientation / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology; D014796:Visual Perception / Q000502:physiology