DuodenoscopyCrohn DiseaseParkinson DiseaseNervous System DiseasesNational Institute of Neurological Disorders and Strokealpha-SynucleinBipolar DisorderMental DisordersBrainParkinsonian DisordersNeurodegenerative DiseasesAntiparkinson AgentsAnxiety DisordersMood DisordersNeuronsDiagnostic and Statistical Manual of Mental DisordersParkinson Disease, SecondaryDopamineLevodopaDisease Models, AnimalDeep Brain StimulationMovement DisordersGlucosylceramidaseRett SyndromeMutationMultiple System AtrophyCognition DisordersAutistic DisorderEpilepsyCentral Nervous System DiseasesSubstantia NigraLewy BodiesDepressive Disorder, MajorAttention Deficit Disorder with HyperactivityNerve DegenerationGait Disorders, NeurologicStiff-Person SyndromeDepressive DisorderNeuromuscular DiseasesNerve Tissue ProteinsEssential TremorBrain DiseasesNeuroprotective AgentsSupranuclear Palsy, ProgressiveCerebellar AtaxiaObsessive-Compulsive DisorderStress Disorders, Post-TraumaticParaneoplastic Syndromes, Nervous SystemSeverity of Illness IndexMethyl-CpG-Binding Protein 2Magnetic Resonance ImagingHeredodegenerative Disorders, Nervous SystemNeurologyPhobic DisordersAge of Onset1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineCase-Control StudiesChild Development Disorders, PervasiveNeuropsychological TestsPsychotic DisordersDopaminergic NeuronsSubstance-Related DisordersCorpus StriatumNeurologic ExaminationHuntington DiseaseOxidopamineGenetic Predisposition to DiseaseConversion DisorderLewy Body DiseaseAstrocytesSubthalamic NucleusDementiaCerebrospinal FluidCerebral CortexPsychiatric Status Rating ScalesAlzheimer DiseasePhenotypeDystoniaTime FactorsAnalysis of VarianceAtaxiaMPTP PoisoningMigraine DisordersUbiquitin-Protein LigasesNational Institutes of Health (U.S.)REM Sleep Behavior DisorderPostural BalanceConduct DisorderComorbiditySleep DisordersCells, CulturedRisk FactorsBasal GangliaTyrosine 3-MonooxygenaseTic DisordersTreatment OutcomeSyndromeImpulse Control DisordersStrokeTissue Plasminogen Activator