[EFFECTS OF MORPHINE UPON SEVERAL TYPES OF OPERANT CONDITIONINGS IN THE RAT].
D002490:Central Nervous System; D003216:Conditioning, Operant; D003213:Conditioning, Psychological; D004361:Drug Tolerance; D009020:Morphine; D010600:Pharmacology; D010827:Physiology; D051381:Rats; D012106:Research
D009020:Morphine
CENTRAL NERVOUS SYSTEM; CONDITIONING (PSYCHOLOGY); DRUG TOLERANCE; EXPERIMENTAL LAB STUDY; MORPHINE; PHARMACOLOGY; PHYSIOLOGY; RATS