Abstract
Background: Brief involuntary sleep-related twitches occurring asymmetrically throughout the body define physiologic hypnic fragmentary myoclonus. An abnormal intensification of this entity identifies excessive fragmentary hypnic myoclonus (EFHM), a 'proposed sleep disorder' in the International Sleep Disorders Classification. Methods: We describe two patients with EFHM, one associated with a REM behaviour disorder. Results: EFHM activity was restricted to sleep prevailing during NREM sleep stages and the second part of the night. EMG was normal and EEG-EMG back-averaging did not show any cortical potentials related to the twitches. Conclusions: EFHM represents a pathological phenomenon which may or may not be associated with other sleep disorders. A brainstem generator explains its distribution throughout the body and the sleep stages.
| Original language | English |
|---|---|
| Pages (from-to) | 73-76 |
| Number of pages | 4 |
| Journal | Sleep Medicine |
| Volume | 3 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2002 |
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Keywords
- Hypnic
- Myoclonus
- Neurophysiology
- Polysomnography
- Sleep
ASJC Scopus subject areas
- Dentistry(all)
- Ophthalmology
- Pulmonary and Respiratory Medicine
- Neurology
Cite this
Excessive fragmentary hypnic myoclonus : Clinical and neurophysiological findings. / Vetrugno, Roberto; Plazzi, Giuseppe; Provini, Federica; Liguori, Rocco; Lugaresi, Elio; Montagna, Pasquale.
In: Sleep Medicine, Vol. 3, No. 1, 2002, p. 73-76.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Excessive fragmentary hypnic myoclonus
T2 - Clinical and neurophysiological findings
AU - Vetrugno, Roberto
AU - Plazzi, Giuseppe
AU - Provini, Federica
AU - Liguori, Rocco
AU - Lugaresi, Elio
AU - Montagna, Pasquale
PY - 2002
Y1 - 2002
N2 - Background: Brief involuntary sleep-related twitches occurring asymmetrically throughout the body define physiologic hypnic fragmentary myoclonus. An abnormal intensification of this entity identifies excessive fragmentary hypnic myoclonus (EFHM), a 'proposed sleep disorder' in the International Sleep Disorders Classification. Methods: We describe two patients with EFHM, one associated with a REM behaviour disorder. Results: EFHM activity was restricted to sleep prevailing during NREM sleep stages and the second part of the night. EMG was normal and EEG-EMG back-averaging did not show any cortical potentials related to the twitches. Conclusions: EFHM represents a pathological phenomenon which may or may not be associated with other sleep disorders. A brainstem generator explains its distribution throughout the body and the sleep stages.
AB - Background: Brief involuntary sleep-related twitches occurring asymmetrically throughout the body define physiologic hypnic fragmentary myoclonus. An abnormal intensification of this entity identifies excessive fragmentary hypnic myoclonus (EFHM), a 'proposed sleep disorder' in the International Sleep Disorders Classification. Methods: We describe two patients with EFHM, one associated with a REM behaviour disorder. Results: EFHM activity was restricted to sleep prevailing during NREM sleep stages and the second part of the night. EMG was normal and EEG-EMG back-averaging did not show any cortical potentials related to the twitches. Conclusions: EFHM represents a pathological phenomenon which may or may not be associated with other sleep disorders. A brainstem generator explains its distribution throughout the body and the sleep stages.
KW - Hypnic
KW - Myoclonus
KW - Neurophysiology
KW - Polysomnography
KW - Sleep
UR - http://www.scopus.com/inward/record.url?scp=0036183233&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036183233&partnerID=8YFLogxK
U2 - 10.1016/S1389-9457(01)00123-X
DO - 10.1016/S1389-9457(01)00123-X
M3 - Article
C2 - 14592258
AN - SCOPUS:0036183233
VL - 3
SP - 73
EP - 76
JO - Sleep Medicine
JF - Sleep Medicine
SN - 1389-9457
IS - 1
ER -