TremorEssential TremorParkinson Diseasealpha-SynucleinAntiparkinson AgentsDeep Brain StimulationParkinsonian DisordersLevodopaParkinson Disease, SecondaryAtaxiaMovement DisordersLewy BodiesGlucosylceramidaseSubstantia NigraStereotaxic TechniquesElectromyographySubthalamic NucleusThalamusGait Disorders, NeurologicMultiple System AtrophyDopamineHarmineHypokinesia1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineDopaminergic NeuronsHarmalineOxidopamineLewy Body DiseaseHandwritingPostureNeurodegenerative DiseasesSupranuclear Palsy, ProgressivePostural BalanceCerebellar DiseasesBrainDyskinesiasPrimidoneTremorineDysarthriaNeurologic ExaminationMPTP PoisoningFragile X SyndromeWristMovementGlobus PallidusNeuronsPutamenFragile X Mental Retardation ProteinAge of OnsetDance TherapyNerve DegenerationSeverity of Illness IndexGaitCarbidopaMyoclonusUbiquitin-Protein LigasesCerebellar Ataxia