Subthalamic NucleusDeep Brain StimulationParkinson DiseaseSubthalamusGlobus PallidusAntiparkinson AgentsBasal GangliaLevodopaBeta RhythmThalamic NucleiStereotaxic TechniquesElectrodes, ImplantedElectric Stimulation TherapyHypokinesiaDyskinesiasSubstantia NigraOxidopamineEntopeduncular NucleusNeural PathwaysDyskinesia, Drug-InducedNeuronsParkinsonian DisordersTremorThalamusAction PotentialsMuscle RigidityDopamine AgentsBiological ClocksMicroelectrodesElectric StimulationRats, Sprague-DawleyReaction TimeSpeech DisordersFunctional LateralityApomorphineMagnetic Resonance ImagingMotor SkillsMovementDopamineNeuropsychological TestsParkinson Disease, SecondaryDysarthriaMotor ActivityBrain MappingImpulse Control DisordersContingent Negative VariationCorpus StriatumGABA AntagonistsSensation DisordersPseudobulbar PalsyModels, NeurologicalNeural InhibitionPeriodicityNeurosurgical ProceduresCortical SynchronizationInhibition (Psychology)ElectroencephalographyPsychomotor PerformanceDopamine AgonistsNeurologic ExaminationGait Disorders, NeurologicMovement DisordersPedunculopontine Tegmental Nucleus1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineImplantable NeurostimulatorsTreatment OutcomeMotor CortexSynaptic Transmissiongamma-Aminobutyric AcidElectrophysiologyElectrodesSignal Processing, Computer-AssistedIbotenic AcidVisible Human ProjectsStatistics, NonparametricMuscimolPhosphinic AcidsDominance, Cerebral