Substantia NigraParkinsonian DisordersParkinson DiseaseDopamineParkinson Disease, Secondary1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineLevodopaOxidopamineCorpus StriatumGlobus PallidusTyrosine 3-MonooxygenaseDopaminergic NeuronsAntiparkinson AgentsMesencephalonSubstantia GelatinosaNeuronsBasal GangliaHypokinesiaSubthalamic NucleusMPTP Poisoningalpha-SynucleinDopamine AgentsExtrapyramidal TractsSubstantia InnominataApomorphineLewy BodiesNeostriatumTegmentum MesencephaliMuscle RigidityPutamenDyskinesia, Drug-InducedNerve DegenerationMultiple System AtrophySupranuclear Palsy, ProgressiveBrainRats, Sprague-DawleyReceptors, Dopamine D2Caudate NucleusDyskinesiasNeural PathwaysMazindol1-Methyl-4-phenylpyridiniumCarbidopaReceptors, DopamineVentral Tegmental AreaDopamine Plasma Membrane Transport ProteinsDeep Brain StimulationDopamine AgonistsBehavior, AnimalDisease Models, AnimalAutoradiographyMotor ActivityTremorMovement DisordersMedial Forebrain BundleThalamusNeurotoxinsAdrenergic AgentsBrain Tissue TransplantationGlial Cell Line-Derived Neurotrophic FactorDopamine AntagonistsSympatholyticsStereotaxic TechniquesReceptors, Dopamine D3Olivopontocerebellar AtrophiesPedunculopontine Tegmental Nucleusgamma-Aminobutyric AcidMacaca fascicularisHomovanillic AcidNeuroprotective AgentsFetal Tissue TransplantationAction PotentialsBenserazideReceptors, Dopamine D13,4-Dihydroxyphenylacetic AcidHydroxydopaminesDihydroxyphenylalanineImmunohistochemistrySynucleinsBasal Ganglia DiseasesAmphetamineNerve Tissue ProteinsRed NucleusQuinpiroleHaloperidolMice, Inbred C57BLRotenoneMacaca mulattaAnalysis of VarianceElectric StimulationLewy Body DiseaseManganese PoisoningRats, WistarBrain Chemistry2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineMelaninsCell CountSulpirideSynaptic TransmissionNomifensine