Parkinsonian DisordersInorganic ChemicalsSupranuclear Palsy, ProgressiveMultiple System AtrophyParkinson DiseaseLevodopaParkinson Disease, SecondaryAntiparkinson Agents1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineGlobus PallidusHypokinesiaMuscle RigiditySubthalamic NucleusDyskinesia, Drug-InducedBipolar DisorderSubstantia NigraOxidopamineTremorExtrapyramidal TractsDyskinesiasMental DisordersCorpus StriatumBasal GangliaCarbidopaAnxiety DisordersMood DisordersDopamine AgentsMovement DisordersDopamineOlivopontocerebellar AtrophiesDeep Brain StimulationBenserazideMazindolDiagnostic and Statistical Manual of Mental Disorders