title: Video analysis of motor events in REM sleep behavior disorder.
abstract: In REM sleep behavior disorder (RBD), several studies focused on electromyographic characterization of motor activity, whereas video analysis has remained more general. The aim of this study was to undertake a detailed and systematic video analysis. Nine polysomnographic records from 5 Parkinson patients with RBD were analyzed and compared with sex- and age-matched controls. Each motor event in the video during REM sleep was classified according to duration, type of movement, and topographical distribution. In RBD, a mean of 54 +/- 23.2 events/10 minutes of REM sleep (total 1392) were identified and visually analyzed. Seventy-five percent of all motor events lasted <2 seconds. Of these events, 1,155 (83.0%) were classified as elementary, 188 (13.5%) as complex behaviors, 50 (3.6%) as violent, and 146 (10.5%) as vocalizations. In the control group, 3.6 +/- 2.3 events/10 minutes (total 264) of predominantly elementary simple character (n = 240, 90.9%) were identified. Number and types of motor events differed significantly between patients and controls (P < 0.05). This study shows a very high number and great variety of motor events during REM sleep in symptomatic RBD. However, most motor events are minor, and violent episodes represent only a small fraction.
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Birgit
authors.initials: B
authors.lastname: Frauscher
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Viola
authors.initials: V
authors.lastname: Gschliesser
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Brandauer
authors.affiliation: Department of Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Hanno
authors.initials: H
authors.lastname: Ulmer
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.|Neurological Center Dr. A. Thomson, French Hospital, Buenos Aires, Argentina.
authors.forename: Cecilia M
authors.initials: CM
authors.lastname: Peralta
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Jörg
authors.initials: J
authors.lastname: Müller
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Werner
authors.initials: W
authors.lastname: Poewe
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Birgit
authors.initials: B
authors.lastname: Högl
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D017286:Polysomnography; D020187:REM Sleep Behavior Disorder / Q000175:diagnosis / Q000503:physiopathology*; D014743:Videotape Recording / Q000379:methods*