a sudden spasm of the muscles. Occasional myoclonic jerks occur between seizures in patients with idiopathic epilepsy, and myoclonus is a major feature of some progressive neurological illnesses with extensive degeneration of the brain cells (including the spongiform encephalopathies). Myoclonic jerks on falling asleep (nocturnal myoclonus) occur in normal individuals.
myoclonic adj.

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  • Myoclonus — Classification and external resources ICD 10 G25.3 ICD 9 333.2 …   Wikipedia

  • myoclonus — [mī äk′lə nəs] n. [ MYO + CLONUS] involuntary twitching or spasm of a muscle or muscles myoclonic [mī΄ō klän′ik] adj …   English World dictionary

  • Myoclonus — A condition of abnormal contraction of muscles or portions of muscles. * * * One or a series of shock like contractions of a group of muscles, of variable regularity, synchrony, and symmetry, generally due to a central nervous system lesion. [myo …   Medical dictionary

  • myoclonus — noun Etymology: New Latin Date: 1883 irregular involuntary contraction of a muscle usually resulting from functional disorder of controlling motor neurons; also a condition characterized by myoclonus • myoclonic adjective …   New Collegiate Dictionary

  • myoclonus epilepsia — myoclonus epilepsia. См. миоклонус эпилепсия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • myoclonus epilepsy — n MYOCLONIC EPILEPSY …   Medical dictionary

  • myoclonus — /muy ok leuh neuhs/, n. Pathol. an abrupt spasm or twitch of a muscle or group of muscles, occurring in some neurological diseases. [1880 85; MYO + CLONUS] * * * …   Universalium

  • myoclonus — noun The brief, involuntary twitching of a muscle or group of muscles …   Wiktionary

  • myoclonus — n. muscular spasms (Pathology) …   English contemporary dictionary

  • myoclonus — [ˌmʌɪə(ʊ) kləʊnəs] noun Medicine spasmodic jerky contraction of groups of muscles. Derivatives myoclonic adjective …   English new terms dictionary

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