CocaineAlcohol AbstinenceBehavior, AddictiveCocaine-Related DisordersFood PreferencesAppetiteAlcohol DeterrentsDopamine Uptake InhibitorsCrack CocaineCacaoSmoking CessationSelf AdministrationDietary SucroseTobacco Use DisorderCuesSubstance Withdrawal SyndromeNaltrexoneSmokingTasteConditioning, OperantFeeding BehaviorAlcoholismDietary CarbohydratesNucleus AccumbensAffectReinforcement (Psychology)Drug-Seeking BehaviorReinforcement ScheduleBehavior, AnimalDietary FatsQuestionnairesExtinction, PsychologicalDose-Response Relationship, DrugMotor ActivityDopamine Plasma Membrane Transport ProteinsDopamineRats, Sprague-DawleyHeroinObesityNarcoticsBenztropineRewardSubstance Abuse DetectionButyrylcholinesteraseStreet DrugsDopamine AntagonistsSubstance-Related DisordersTreatment OutcomeDopamine AgonistsHeroin DependenceReceptors, Dopamine D2Ventral Tegmental AreaRats, Long-EvansCorpus StriatumConditioning (Psychology)SaimiriMicrodialysisPrenatal Exposure Delayed EffectsReceptors, Dopamine D3Drug InteractionsAnalysis of VarianceTime FactorsMethadoneMacaca mulattaMethamphetamineOpioid-Related DisordersDextroamphetamineAmphetamineQuinpiroleTropanesBenzazepinesInjections, IntravenousDiscrimination LearningMotivationFlupenthixolCarboxylic Ester HydrolasesBrainGas Chromatography-Mass SpectrometryChoice BehaviorStereotyped BehaviorDisulfiram