@article{ref1,
title="A motor signature of REM sleep behavior disorder",
journal="Movement disorders",
year="2012",
author="Oudiette, Delphine and Leu-Semenescu, Smaranda and Roze, Emmanuel and Vidailhet, Marie and De Cock, Valerie Cochen and Golmard, Jean-Louis and Arnulf, Isabelle",
volume="27",
number="3",
pages="428-431",
abstract="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. © 2011 Movement Disorder Society.<p /><p>Language: en</p>",
language="en",
issn="0885-3185",
doi="10.1002/mds.24044",
url="http://dx.doi.org/10.1002/mds.24044"
}