title: Spectral analysis of heart rate variability in multiple system atrophy and unexplained sporadic ataxia.
authors.forename: Michael
authors.initials: M
authors.lastname: Abele
authors.forename: Thomas
authors.initials: T
authors.lastname: Klockgether
authors.forename: Ullrich
authors.initials: U
authors.lastname: Wüllner
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D019578:Multiple System Atrophy / Q000150:complications* / Q000175:diagnosis* / Q000503:physiopathology; D017286:Polysomnography; D011237:Predictive Value of Tests; D012890:Sleep / Q000502:physiology; D013132:Spinocerebellar Degenerations / Q000150:complications* / Q000175:diagnosis* / Q000503:physiopathology; D013564:Sympathetic Nervous System / Q000503:physiopathology; D014851:Wakefulness / Q000502:physiology