AmphetamineAmphetaminesCentral Nervous System StimulantsBehavior, AddictiveDextroamphetamineAmphetamine-Related DisordersMethamphetamineSubstance-Related DisordersCocaineDopamineSubstance Abuse DetectionNucleus AccumbensDopamine Uptake InhibitorsN-Methyl-3,4-methylenedioxyamphetamineStreet DrugsBehavior, AnimalOpioid-Related DisordersRewardMotor ActivityStereotyped BehaviorSubstance Withdrawal SyndromeDopamine AgentsSelf Administration3,4-MethylenedioxyamphetamineDesigner DrugsHeroin DependenceCorpus StriatumRats, Sprague-DawleyGas Chromatography-Mass SpectrometryNarcoticsDopamine Plasma Membrane Transport ProteinsConditioning, OperantMethadoneTobacco Use DisorderAppetite DepressantsVentral Tegmental AreaReceptors, Dopamine D2Dose-Response Relationship, DrugDopamine AntagonistsSubstance Abuse Treatment CentersNicotineDopamine AgonistsMethylphenidateImpulsive BehaviorHeroinHallucinogensDrug-Seeking BehaviorCompulsive BehaviorAnalgesics, OpioidNeostriatumBrainReinforcement (Psychology)Narcotic AntagonistsAlcoholismLimbic SystemMicrodialysisConditioning (Psychology)MotivationBuprenorphineEnzyme Multiplied Immunoassay TechniqueForensic MedicinePsychoses, Substance-InducedAdrenergic Uptake InhibitorsRats, Long-Evansp-ChloroamphetamineReceptors, Dopamine D1EuphoriaMethyltyrosinesMorphineReinforcement SchedulePsychotropic DrugsPhenmetrazineRacloprideNomifensineCaudate NucleusOpiumDrug InteractionsPyrazolonesReceptors, DopamineEphedrineAnalysis of VarianceBarbituratesFenfluramineReceptors, Dopamine D3Exploratory BehaviorBenzphetamineDrug TolerancePrefrontal CortexSerotoninConditioning, ClassicalTime FactorsQuinpiroleExtinction, PsychologicalPrescription Drug MisuseLocomotionNicotinic AgonistsHyperkinesisSalicylamidesalpha-MethyltyrosineSerotonin Agents