Subthalamic NucleusDeep Brain StimulationParkinson DiseaseGlobus PallidusSubthalamusAntiparkinson AgentsBasal GangliaThalamic NucleiLevodopaBeta RhythmElectrodes, ImplantedStereotaxic TechniquesElectric Stimulation TherapyHypokinesiaDyskinesiasCell NucleusSubstantia NigraOxidopamineNeural PathwaysEntopeduncular NucleusNeuronsParkinsonian DisordersDyskinesia, Drug-InducedMuscle RigidityTremorDopamine AgentsMicroelectrodesBiological ClocksThalamusAction PotentialsRats, Sprague-DawleyElectric StimulationFunctional LateralityReaction TimeMagnetic Resonance ImagingDopamineApomorphinePedunculopontine Tegmental NucleusBrain MappingMovementDysarthriaContingent Negative VariationNeuropsychological TestsMotor SkillsMotor ActivityCorpus StriatumPseudobulbar PalsySensation DisordersSpeech DisordersParkinson Disease, SecondaryVentral Thalamic NucleiInhibition (Psychology)Neural InhibitionCortical SynchronizationModels, NeurologicalNeurologic ExaminationNucleus AccumbensGABA AntagonistsMotor CortexNeurosurgical ProceduresElectroencephalographySynaptic Transmission1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineBehavior, AnimalGait Disorders, NeurologicPsychomotor PerformanceVisible Human ProjectsDopamine AgonistsPeriodicityMuscimolgamma-Aminobutyric AcidTreatment OutcomeMovement DisordersStereotyped BehaviorAnalysis of VarianceElectrophysiologyBrainCaudate NucleusSignal Processing, Computer-AssistedImage Processing, Computer-AssistedDystoniaDominance, CerebralDenervationSolitary NucleusElectromyographyMicroinjectionsBicucullineCognition DisordersElectrodesMedial Forebrain BundleCerebral Cortex