Parkinsonian DisordersInorganic ChemicalsSupranuclear Palsy, ProgressiveMultiple System AtrophyParkinson DiseaseParkinson Disease, SecondaryLevodopaAntiparkinson Agents1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineHypokinesiaMuscle RigidityGlobus PallidusDyskinesia, Drug-InducedSubstantia NigraTremorDyskinesiasDihydroxyphenylalanineCarbidopaOxidopamineSubthalamic NucleusParkinson Disease, PostencephaliticCorpus StriatumBrainBrain ChemistryDopamineMovement DisordersExtrapyramidal TractsBasal GangliaDopamine AgentsOlivopontocerebellar AtrophiesBipolar DisorderDeep Brain StimulationBrain InjuriesDystoniaBenserazideBrain NeoplasmsBrain MappingNeuronsMental DisordersPutamenGuadeloupeMagnetic Resonance ImagingBasal Ganglia DiseasesMazindolAnxiety DisordersMood DisordersLewy Body DiseaseDisease Models, AnimalLewy BodiesDopaminergic NeuronsTyrosine 3-MonooxygenaseNeurologic ExaminationManganese PoisoningApomorphineDopamine Plasma Membrane Transport ProteinsNerve Degeneration