Nucleus AccumbensReceptors, AMPACocaineDopamineCell NucleusDopamine Uptake InhibitorsRats, Sprague-DawleyRewardMicrodialysisSelf AdministrationDopamine AntagonistsBehavior, AnimalConditioning, OperantAmphetamineMicroinjectionsSeptal NucleiVentral Tegmental AreaLimbic SystemReceptors, Dopamine D2Caudate NucleusCocaine-Related DisordersReceptors, Dopamine D1Motor ActivityRats, Long-EvansCorpus StriatumNeuronsReceptors, DopamineDopamine Agonists3,4-Dihydroxyphenylacetic AcidBenzazepinesPrefrontal CortexReinforcement (Psychology)Neural PathwaysGlutamic AcidSubstance Withdrawal Syndromealpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic AcidExcitatory Amino Acid AntagonistsQuinpiroleCentral Nervous System StimulantsDrug-Seeking BehaviorNeostriatumAnalysis of VarianceFlupenthixolProto-Oncogene Proteins c-fosHaloperidolDose-Response Relationship, DrugSynaptic TransmissionOncogene Proteins v-fosCuesExtinction, PsychologicalReceptors, N-Methyl-D-AspartateReceptors, Dopamine D3Appetitive BehaviorConditioning (Psychology)BrainHeroinRats, WistarAmygdalaBehavior, AddictiveMuscimol2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineReceptors, Opioid, muSulpirideNarcoticsPutamenDopamine Plasma Membrane Transport ProteinsMorphineHomovanillic AcidRaphe NucleiExcitatory Amino Acid AgonistsReinforcement ScheduleEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Stereotyped BehaviorThalamic NucleiHypothalamic Area, LateralPair BondEthanolSynapsesTegmentum MesencephaliElectric StimulationExcitatory Postsynaptic PotentialsSalicylamidesExtracellular SpaceGlobus PallidusGABA AgonistsSolitary NucleusFood PreferencesNeuronal PlasticitySucroseCentral Nervous System DepressantsTime FactorsEnkephalinsMotivationBrain ChemistryNomifensineFeeding BehaviorDopamine AgentsConditioning, ClassicalMethamphetamineHippocampus