Ventral Tegmental AreaTegmentum MesencephaliDopamineNucleus AccumbensDopaminergic NeuronsCocaineMesencephalonRewardSubstantia NigraTyrosine 3-MonooxygenaseRats, Sprague-DawleyNeuronsSelf AdministrationQuinpiroleMicroinjectionsDopamine AntagonistsDopamine Uptake InhibitorsDopamine AgonistsReceptors, Dopamine D2Conditioning, OperantLimbic SystemNeural PathwaysRats, Long-EvansEthanolCentral Nervous System DepressantsBehavior, AnimalSelf Stimulationgamma-Aminobutyric AcidSalicylamidesMotor ActivityNicotineReceptors, Dopamine D1MicrodialysisReceptors, DopamineAmphetamineReinforcement (Psychology)MorphineVesicular Glutamate Transport Protein 2GABA AgonistsHabenulaGlutamic AcidSeptal NucleiNarcoticsBaclofenStereotaxic TechniquesHeroinBenzazepinesPrefrontal CortexSubstance Withdrawal Syndrome2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineInhibitory Postsynaptic PotentialsAnalysis of VarianceReceptors, Opioid, muMamillary BodiesAction PotentialsCocaine-Related DisordersDopamine AgentsNeurotensinStilbamidinesGABAergic NeuronsSerotonin 5-HT3 Receptor AgonistsMuscimolEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Dose-Response Relationship, DrugNeuronal Tract-TracersSynaptic TransmissionReceptors, AMPANicotinic AgonistsNicotinic AntagonistsHypothalamic Area, LateralDrug-Seeking BehaviorMecamylamineNeural InhibitionElectric StimulationGABA-B Receptor AgonistsDopamine Plasma Membrane Transport ProteinsRats, WistarExcitatory Amino Acid AntagonistsCentral Nervous System StimulantsElectrophysiologyConditioning (Psychology)BrainSulpirideBenzeneacetamidesAfferent PathwaysDrug Administration RoutesEthylaminesGABA AntagonistsProto-Oncogene Proteins c-fosNeuroanatomical Tract-Tracing TechniquesPonsPatch-Clamp TechniquesCorpus StriatumFlupenthixolReceptors, NicotinicDrug InteractionsApomorphineReceptor, Muscarinic M5Medial Forebrain BundleReceptors, N-Methyl-D-Aspartate