Induction of sleep and "reward contingent positive variation" by photic stimuli in the cat.
D000200:Action Potentials; D000818:Animals; D002415:Cats; D003216:Conditioning, Operant; D004569:Electroencephalography; D005246:Feedback; D005260:Female; D007266:Inhibition, Psychological; D008027:Light; D008297:Male; D012201:Reward; D012890:Sleep; D014793:Visual Cortex / Q000502:physiology*