Role of unconditioned and conditioned drug effects in the self-administration of opiates and stimulants.
D000818:Animals; D000928:Antidepressive Agents / Q000008:administration & dosage*; D001143:Arousal / Q000187:drug effects; D001522:Behavior, Animal / Q000187:drug effects; D001921:Brain / Q000187:drug effects*; D003214:Conditioning, Classical / Q000187:drug effects*; D009294:Narcotics / Q000008:administration & dosage*
D000928:Antidepressive Agents; D009294:Narcotics