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An episode of geniospasm in sleep: Toward new insights into pathophysiology?
Author(s) -
Kharraz Bita,
Reilich Peter,
Noachtar Soheyl,
Danek Adrian
Publication year - 2008
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.21722
Subject(s) - polysomnography , electromyography , chin , rapid eye movement sleep , sleep (system call) , psychology , rem sleep behavior disorder , physical medicine and rehabilitation , eye movement , non rapid eye movement sleep , medicine , neuroscience , electroencephalography , anatomy , computer science , operating system
Polysomnography and needle electromyography were performed on three members of a family with hereditary geniospasm. Electromyography showed simultaneous bilateral discharges exclusively in the mentalis muscle. In one subject we documented a paroxysm of geniospasm during sleep phase 2. This activity ceased with the onset of REM sleep. In view of the mechanism of REM atonia and the bilateral chin EMG discharges, our findings support a supranuclear origin of the peculiar mentalis muscle paroxysms. © 2007 Movement Disorder Society