title: Enhanced self-stimulation responding from the substantia nigra after chronic amphetamine treatment: a role for conditioning factors.
mesh_terms: D000661:Amphetamine / Q000494:pharmacology*; D000818:Animals; D003213:Conditioning, Psychological / Q000502:physiology*; D003913:Dextroamphetamine / Q000494:pharmacology; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D051381:Rats; D012653:Self Stimulation / Q000187:drug effects*; D013378:Substantia Nigra / Q000502:physiology*; D013997:Time Factors
chemical_list: D000661:Amphetamine; D003913:Dextroamphetamine