Parkinson Diseasealpha-SynucleinAntiparkinson AgentsParkinsonian DisordersParkinson Disease, SecondaryLevodopaGlucosylceramidaseSubstantia NigraLewy BodiesDeep Brain StimulationMultiple System AtrophyDopamine1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineDopaminergic NeuronsOxidopamineSubthalamic NucleusLewy Body DiseaseNeurodegenerative DiseasesMPTP PoisoningGait Disorders, NeurologicSupranuclear Palsy, ProgressivePostural BalanceDance TherapyPutamenEssential TremorUbiquitin-Protein LigasesNeuronsBrainPedunculopontine Tegmental NucleusREM Sleep Behavior DisorderGaucher DiseaseOncogene ProteinsGaitTyrosine 3-MonooxygenasePergolideCarbidopaNerve Degenerationbeta-SynucleinHypokinesiaDementiaCorpus StriatumMutationMovement DisordersMesencephalonGlobus PallidusGenetic Predisposition to DiseaseDisease Models, AnimalSeverity of Illness IndexAge of OnsetNeuroprotective AgentsManebMitochondriaDyskinesias1-Methyl-4-phenylpyridiniumTreatment OutcomeNeuropsychological TestsOlfaction DisordersSynucleinsDopamine Plasma Membrane Transport ProteinsTropanesDopamine AgentsDopamine AgonistsCase-Control StudiesAlzheimer DiseasePositron-Emission TomographyApathyBenzothiazolesAutophagySleep Arousal Disorderstau ProteinsAdrenergic AgentsPrimary DysautonomiasGenetic TestingRotenoneCognition DisordersPostmortem ChangesTime FactorsDyskinesia, Drug-InducedBasal GangliaManganese PoisoningGenome-Wide Association StudyPure Autonomic FailureParaquatOxidative StressApomorphineNerve Tissue ProteinsNeurologic ExaminationAmyloidDeglutition DisordersStereotaxic TechniquesPolymorphism, Single NucleotideSympatholyticsProtein-Serine-Threonine KinasesIntracellular Signaling Peptides and ProteinsPemolineSelenoprotein WMotor SkillsReproducibility of ResultsDreamsReceptors, Dopamine