title: Drug effects upon force and duration of response during fixed-ratio performance in rats.
mesh_terms: D000818:Animals; D002707:Chlordiazepoxide / Q000494:pharmacology; D002746:Chlorpromazine / Q000494:pharmacology; D003216:Conditioning, Operant / Q000187:drug effects*; D003620:Dantrolene / Q000494:pharmacology; D003913:Dextroamphetamine / Q000494:pharmacology; D008297:Male; D051381:Rats; D011930:Reaction Time / Q000187:drug effects; D012055:Reinforcement Schedule; D013997:Time Factors
chemical_list: D002707:Chlordiazepoxide; D003620:Dantrolene; D003913:Dextroamphetamine; D002746:Chlorpromazine