RewardChoice BehaviorMotivationConditioning, OperantAnticipation, PsychologicalNucleus AccumbensCuesBehavior, AnimalReinforcement (Psychology)Self StimulationPunishmentDopamineImpulsive BehaviorReaction TimeLearningDecision MakingProbability LearningBrain MappingBasal GangliaMagnetic Resonance ImagingPrefrontal CortexRats, Long-EvansConditioning (Psychology)Ventral Tegmental AreaFeedback, PsychologicalConditioning, ClassicalPsychomotor PerformanceCocaineReinforcement ScheduleDriveAssociation LearningGamblingBrainBehavior, AddictiveFood PreferencesCorpus StriatumGames, ExperimentalAnalysis of VarianceNeuronsAnhedoniaAppetitive BehaviorLimbic SystemEconomics, BehavioralPhotic StimulationDopamine Uptake InhibitorsFeeding BehaviorSelf AdministrationNeural PathwaysGyrus CinguliMacaca mulattaPleasureSucroseCaudate NucleusSubstance Withdrawal SyndromeAmygdalaDiscrimination LearningMesencephalonFrontal LobeGoalsFlupenthixolPlant NectarFoodModels, PsychologicalImage Processing, Computer-AssistedTask Performance and AnalysisFunctional NeuroimagingTime FactorsDopamine AntagonistsDiscrimination (Psychology)Cocaine-Related DisordersNicotineNeostriatumDopaminergic NeuronsReceptors, Dopamine D2Extinction, PsychologicalBehaviorCompulsive BehaviorReversal LearningSweetening AgentsMedial Forebrain BundleRats, Sprague-DawleyAmphetamineSaccharinMotor Activity