The rat's failure to anticipate regularly scheduled daily shock.
D000818:Animals; D001143:Arousal; D001362:Avoidance Learning; D001522:Behavior, Animal; D001831:Body Temperature; D002940:Circadian Rhythm; D003216:Conditioning, Operant; D003213:Conditioning, Psychological; D003463:Cues; D004597:Electroshock; D004924:Escape Reaction; D005239:Fear; D005247:Feeding Behavior; D005260:Female; D009043:Motor Activity; D051381:Rats