Effects of two-hour light-dark cycles on feeding, drinking and motor activity of the rat.
D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D004326:Drinking; D004327:Drinking Behavior; D004435:Eating; D005247:Feeding Behavior; D008027:Light; D008297:Male; D009043:Motor Activity; D010507:Periodicity; D051381:Rats; D011919:Rats, Inbred Strains; D013997:Time Factors