Supranuclear Palsy, ProgressiveMultiple System AtrophyCerebral PalsyBulbar Palsy, ProgressiveGuadeloupetau ProteinsParkinson DiseaseTauopathiesNeurodegenerative DiseasesNeurofibrillary TanglesOphthalmoplegiaParkinsonian DisordersBell PalsyHypokinesiaBasal GangliaNeurofibrilsTegmentum MesencephaliHandwritingAtrophyMuscle HypertoniaLisuridePick Disease of the BrainDementiaOcular Motility DisordersBasal Ganglia DiseasesMovement DisordersBrainBenzilatesGuamLewy Body DiseaseSpeech DisordersParkinson Disease, PostencephaliticNeck MusclesOlivopontocerebellar AtrophiesFrontotemporal DementiaNerve DegenerationGait Disorders, NeurologicIntralaminar Thalamic NucleiFrontal LobeFrontotemporal Lobar DegenerationMagnetic Resonance ImagingParkinson Disease, SecondaryNeuropsychological TestsFacial MusclesCognition DisordersLevodopaAlzheimer DiseaseMuscle RigidityMesencephalonFacial ParalysisBrain DiseasesReflex, AbnormalPonsDisease ProgressionPutamenDiffusion Tensor ImagingCholinergic FibersAutopsyBlinkingNeurologic ExaminationLewy BodiesCase-Control StudiesEye MovementsGaitSubstantia NigraDopamine AgentsSyndromeCerebral CortexHallucinationsNeuroimagingSaccadesAbducens Nerve Diseases