Respiratory System AbnormalitiesMultiple System AtrophyStomatognathic System AbnormalitiesDigestive System AbnormalitiesOlivopontocerebellar AtrophiesShy-Drager SyndromeAbnormalities, MultipleRespiratory SystemAutonomic Nervous SystemMagnetic Resonance ImagingSupranuclear Palsy, Progressivealpha-SynucleinLung ComplianceSympathetic Nervous SystemRespiratory MechanicsRespiratory Physiological PhenomenaAirway ResistanceAutonomic Nervous System DiseasesParkinson DiseasePutamenSynucleinsCerebellar AtaxiaHeart Rate