title: Lack of tolerance or sensitization to the effects of chronic d-amphetamine on substantia nigra self-stimulation.
mesh_terms: D000818:Animals; D003216:Conditioning, Operant / Q000187:drug effects; D003913:Dextroamphetamine / Q000008:administration & dosage / Q000494:pharmacology*; D004298:Dopamine / Q000502:physiology; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D004560:Electricity; D008297:Male; D009020:Morphine / Q000494:pharmacology; D051381:Rats; D012653:Self Stimulation / Q000187:drug effects*; D013378:Substantia Nigra / Q000187:drug effects*; D009435:Synaptic Transmission / Q000187:drug effects; D013997:Time Factors
chemical_list: D009020:Morphine; D003913:Dextroamphetamine; D004298:Dopamine