CocaineCocaine-Related DisordersDopamine Uptake InhibitorsCrack CocaineSelf AdministrationConditioning, OperantNucleus AccumbensReinforcement (Psychology)Behavior, AddictiveDrug-Seeking BehaviorReinforcement ScheduleBehavior, AnimalExtinction, PsychologicalDose-Response Relationship, DrugMotor ActivityDopamine Plasma Membrane Transport ProteinsDopamineRats, Sprague-DawleyHeroinNarcoticsBenztropineSubstance Withdrawal SyndromeRewardSubstance Abuse DetectionButyrylcholinesteraseStreet DrugsDopamine AntagonistsSubstance-Related DisordersDopamine AgonistsHeroin DependenceReceptors, Dopamine D2Ventral Tegmental AreaRats, Long-EvansCorpus StriatumConditioning (Psychology)SaimiriCuesMicrodialysisPrenatal Exposure Delayed EffectsReceptors, Dopamine D3Drug InteractionsAnalysis of VarianceTime FactorsMethadoneMacaca mulattaMethamphetamineOpioid-Related DisordersDextroamphetamineAmphetamineQuinpiroleTropanesBenzazepinesInjections, IntravenousDiscrimination LearningMotivationFlupenthixolCarboxylic Ester HydrolasesBrainGas Chromatography-Mass SpectrometryChoice BehaviorStereotyped BehaviorDisulfiram