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CASE REPORT
J Korean Sleep Res Soc. 2011;8(2):48-51.         doi: https://doi.org/10.13078/jksrs.11012
A Case of Propriospinal Myoclonus at Sleep Onset
Bomi Kim, Gha-Hyun Lee, Min Ju Kim, Ho Sung Ryu, and Sang-Ahm Lee
Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
Corresponding Author: Sang-Ahm Lee ,Tel: +82-2-3010-3440, Fax: +82-2-474-4691, Email: salee@amc.seoul.kr
Received: 30 June 2011;  Accepted: 11 October 2011.
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ABSTRACT
Propriospinal myoclnus is uncommon disorder characterized by arrhythmic jerk arising in muscles corresponding to a myelomere and spreading rostrally and caudally. Propriospinal myoclnus occurring only in the relaxation period preceding sleep was first described in 1997, and is extremely rare. Myoclonus showed a striking relationship with vigilance level. We report a case of propriospinal myoclnus at sleep onset with a polysomnographic and electromyographic studies, who is the first case in Korea to the best of our knowledge.
Keywords: Propriospinal myoclonus at sleep onset | Hypnotic jerk.
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