title: Analgesia produced by electrical stimulation of catecholamine nuclei in the rat brain.
mesh_terms: D000818:Animals; D001931:Brain Mapping; D002552:Cerebral Ventricles / Q000187:drug effects / Q000502:physiology*; D004558:Electric Stimulation; D008297:Male; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D010146:Pain; D051381:Rats; D012653:Self Stimulation / Q000502:physiology; D013378:Substantia Nigra / Q000187:drug effects / Q000502:physiology*
chemical_list: D009270:Naloxone; D009020:Morphine