CocaineCocaine-Related DisordersSelf AdministrationDopamine Uptake InhibitorsConditioning, OperantCrack CocaineReinforcement (Psychology)Reinforcement ScheduleBehavior, AddictiveDrug-Seeking BehaviorExtinction, PsychologicalDose-Response Relationship, DrugBenztropineBehavior, AnimalNucleus AccumbensNarcoticsButyrylcholinesteraseButorphanolSubstance Withdrawal SyndromeRats, Sprague-DawleyMotor ActivityRewardSubstance-Related DisordersDopamine AntagonistsMacaca mulattaNaltrexoneFoodReceptors, Dopamine D2CuesRats, Long-EvansTime FactorsDopamineAnalysis of VarianceDrug InteractionsMorphine DependenceKineticsAlcoholismCentral Nervous System StimulantsTobacco Use DisorderHeroin DependenceRats, WistarOpioid-Related DisordersHeroinDopamine Plasma Membrane Transport ProteinsStreet DrugsHydrogen-Ion ConcentrationMarijuana AbuseTemperatureSubstance Abuse DetectionDrug ToleranceCalciumDopamine AgonistsMembrane PotentialsModels, BiologicalBrainNarcotic AntagonistsMethadoneCorpus StriatumVentral Tegmental AreaConditioning (Psychology)MicrodialysisSaimiriMotivationMolecular Sequence DataMethamphetamineNeuronsThermodynamicsReceptors, Dopamine D3MorphineElectrophysiologyMathematicsPrenatal Exposure Delayed EffectsPotassiumModels, ChemicalSodiumNicotineProtein BindingBuprenorphineNaloxoneMutationAlcohol DeterrentsBinding SitesAmphetamine-Related DisordersAnalgesics, Opioid