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Periodic limb movements and sleep‐wake disorder
Author(s) -
NOZAWA TANEYOSHI,
ICHIKAWA HIROO,
TAKEUCHI TORU
Publication year - 1998
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1998.tb01025.x
Subject(s) - arousal , myotonic dystrophy , medicine , anesthesia , physical medicine and rehabilitation , physical therapy , psychology , audiology , neuroscience
The relationship of periodic limb movements (PLM) and Sleep‐wake disorders in 11 patients was investigated. Two patients complained of insomnia. A patient with cervical spinal canal stenosis had a complaint of difficulty in initiating sleep. Movement index (MI) was 51 and PLM arousal index was 8. A patient with chronic hemodialysis had a complaint of difficulty in initiating and maintaining sleep. MI was 79 and PLM arousal index was 51. One patient with myotonic dystrophy showed 79 in MI and 3 in PLM arousal index. It is suspected that myotonic dystrophy is less sensitive to stimuli during sleep (i.e. PLM). These results suggest that the sleep‐wake disorders associated with PLM relate to the threshold of awakening.