title: Drug injections as negative reinforcers.
mesh_terms: D000818:Animals; D002746:Chlorpromazine / Q000494:pharmacology; D003216:Conditioning, Operant / Q000187:drug effects; D004597:Electroshock; D005108:Extinction, Psychological / Q000187:drug effects; D006213:Hallucinogens / Q000494:pharmacology; D000882:Haplorhini; D008253:Macaca mulatta; D009292:Narcotic Antagonists / Q000494:pharmacology; D011619:Psychotropic Drugs / Q000494:pharmacology*; D011678:Punishment; D012055:Reinforcement Schedule; D013997:Time Factors
chemical_list: D006213:Hallucinogens; D009292:Narcotic Antagonists; D011619:Psychotropic Drugs; D002746:Chlorpromazine