Effect of morphine on aversive subthalamic stimulation in the cat.
D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D002415:Cats; D002746:Chlorpromazine / Q000494:pharmacology; D004558:Electric Stimulation; D009020:Morphine / Q000494:pharmacology*; D013788:Thalamus / Q000187:drug effects / Q000502:physiology
D009020:Morphine; D002746:Chlorpromazine