Negative myoclonus

Carlo Alberto Tassinari, Guido Rubboli, Elena Gardella

Research output: Contribution to journalArticlepeer-review

Abstract

Negative myoclonus (NM) is a motor phenomenon characterized by involuntary jerky movements due to a brief, sudden interruption of muscular activity. This motor disturbance can be observed in a variety of clinical conditions, that can range from physiological NM, occurring when falling asleep or after prolonged exercise, to asterixis, a form of NM observed in patients with toxic-metabolic encephalopathies or with focal brain lesions, or, as a paroxysmal phenomenon, labelled as epileptic negative myoclonus, in epileptic patients. Neurophysiological investigations are essential to diagnose NM and to distinguish it from other motor disorders, such as tremor or positive myoclonus. Furthermore, neurophysiological findings can provide useful information supporting a subcortical or cortical origin of NM. In cortical NM, recent data suggest a role of cortical active inhibitory areas in the generation of this motor phenomenon.

Original languageEnglish
Pages (from-to)209-213
Number of pages5
JournalClinical Neuroscience
Volume3
Issue number4
Publication statusPublished - 1995

Keywords

  • asterixis
  • epileptic negative myoclonus
  • inhibitory cortical areas
  • myoclonus
  • negative myoclonus

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology

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