Movement disorders : official journal of the Movement Disorder Society · 2011
A motor signature of REM sleep behavior disorder.
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Oudiette Delphine, Leu-Semenescu Smaranda, Roze Emmanuel, Vidailhet Marie, De Cock Valérie Cochen, Golmard Jean-Louis, Arnulf Isabelle
Аннотация
BACKGROUND: The purpose of this study was to determine if there was a common pattern in movements during REM sleep behavior disorder (RBD).
METHODS: We blindly compared video-monitored movements during RBD (n = 136 clips) and wakefulness/arousal (n = 53 clips) in patients with Parkinson's disease (n = 29) and without parkinsonism (idiopathic RBD, n = 31; narcolepsy, n = 5).
RESULTS: The scorers accurately guessed the sleep/wake stage of 94% of video clips. Compared with wake movements, RBD movements were faster and more often repeated, jerky, and pseudohallucinatory, not self-centered, never associated with tremor, and rarely involved the environment in an appropriate manner. A specific posture of the hand (limp wrist with flexed digits) during grasping movements was evidenced during RBD in 48% of patients, reminiscent of hand-babbling in babies.
CONCLUSIONS: These characteristics of movements were found in the 3 conditions (Parkinson's disease, idiopathic RBD, and primary narcolepsy), delineating a common motor signature of RBD.
METHODS: We blindly compared video-monitored movements during RBD (n = 136 clips) and wakefulness/arousal (n = 53 clips) in patients with Parkinson's disease (n = 29) and without parkinsonism (idiopathic RBD, n = 31; narcolepsy, n = 5).
RESULTS: The scorers accurately guessed the sleep/wake stage of 94% of video clips. Compared with wake movements, RBD movements were faster and more often repeated, jerky, and pseudohallucinatory, not self-centered, never associated with tremor, and rarely involved the environment in an appropriate manner. A specific posture of the hand (limp wrist with flexed digits) during grasping movements was evidenced during RBD in 48% of patients, reminiscent of hand-babbling in babies.
CONCLUSIONS: These characteristics of movements were found in the 3 conditions (Parkinson's disease, idiopathic RBD, and primary narcolepsy), delineating a common motor signature of RBD.