title: Effects of morphine on spontaneous multiple-unit activity: possible relation to mechanisms of analgesia and reward.
mesh_terms: D000698:Analgesia; D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000502:physiology; D004569:Electroencephalography; D007031:Hypothalamus / Q000187:drug effects; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D012201:Reward; D012653:Self Stimulation
chemical_list: D009270:Naloxone; D009020:Morphine