Definitions for myoclonus
maɪˈɒk lə nəsmy·oclonus

Princeton's WordNetRate this definition:0.0 / 0 votes

1. myoclonusnoun

   a clonic spasm of a muscle or muscle group

WiktionaryRate this definition:0.0 / 0 votes

1. myoclonusnoun

   The brief, involuntary twitching of a muscle or group of muscles.

WikipediaRate this definition:0.0 / 0 votes

1. Myoclonus

   Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle or a group of muscles, different from clonus, which is rhythmic or regular. Myoclonus (myo "muscle", clonic "jerk") describes a medical sign and, generally, is not a diagnosis of a disease. These myoclonic twitches, jerks, or seizures are usually caused by sudden muscle contractions (positive myoclonus) or brief lapses of contraction (negative myoclonus). The most common circumstance under which they occur is while falling asleep (hypnic jerk). Myoclonic jerks occur in healthy people and are experienced occasionally by everyone. However, when they appear with more persistence and become more widespread they can be a sign of various neurological disorders. Hiccups are a kind of myoclonic jerk specifically affecting the diaphragm. When a spasm is caused by another person it is known as a provoked spasm. Shuddering attacks in babies fall in this category. Myoclonic jerks may occur alone or in sequence, in a pattern or without pattern. They may occur infrequently or many times each minute. Most often, myoclonus is one of several signs in a wide variety of nervous system disorders such as multiple sclerosis, Parkinson's disease, dystonia, cerebral palsy, Alzheimer's disease, Gaucher's disease, subacute sclerosing panencephalitis, Creutzfeldt–Jakob disease (CJD), serotonin toxicity, some cases of Huntington's disease, some forms of epilepsy, and occasionally in intracranial hypotension. In almost all instances in which myoclonus is caused by central nervous system disease it is preceded by other symptoms; for instance, in CJD it is generally a late-stage clinical feature that appears after the patient has already started to exhibit gross neurological deficits. Anatomically, myoclonus may originate from lesions of the cortex, subcortex or spinal cord. The presence of myoclonus above the foramen magnum effectively excludes spinal myoclonus; further localisation relies on further investigation with electromyography (EMG) and electroencephalography (EEG).

ChatGPTRate this definition:0.0 / 0 votes

1. myoclonus

   Myoclonus refers to involuntary, rapid, sudden muscular movements or jerks that can occur in various parts of the body. These movements can be caused by a variety of underlying health conditions such as neurological disorders and side effects from certain medications. Myoclonus may occur infrequently or in a pattern, and can range from mild and hardly noticeable to severe and disruptive.

WikidataRate this definition:0.0 / 0 votes

1. Myoclonus

   Myoclonus is a brief, involuntary twitching of a muscle or a group of muscles. It describes a medical sign and, generally, is not a diagnosis of a disease. Brief twitches are perfectly normal. The myoclonic twitches are usually caused by sudden muscle contractions; they also can result from brief lapses of contraction. Contractions are called positive myoclonus; relaxations are called negative myoclonus. The most common time for people to encounter them is while falling asleep, but myoclonic jerks are also a sign of a number of neurological disorders. Hiccups are also a kind of myoclonic jerk specifically affecting the diaphragm. When a spasm is caused by another person it is known as a "provoked spasm". Shuddering attacks with babies also fall in this category. Myoclonic jerks may occur alone or in sequence, in a pattern or without pattern. They may occur infrequently or many times each minute. Most often, myoclonus is one of several signs in a wide variety of nervous system disorders such as multiple sclerosis, Parkinson's disease, Alzheimer's disease, subacute sclerosing panencephalitis and Creutzfeldt-Jakob disease, serotonin toxicity, some cases of Huntington's disease, some forms of epilepsy, and occasionally in intracranial hypotension. Some researchers indicate that jerks persistently may even cause early tremors.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Myoclonus

   Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some CENTRAL NERVOUS SYSTEM DISEASES; (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus is the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3).

Matched Categories

1. • Spasm

Usage in printed sourcesFrom: 

1. [["1887","1"],["1892","14"],["1893","7"],["1894","8"],["1895","2"],["1896","4"],["1897","19"],["1898","10"],["1899","34"],["1900","14"],["1901","28"],["1902","5"],["1903","11"],["1904","46"],["1905","83"],["1906","38"],["1907","118"],["1908","58"],["1909","27"],["1910","28"],["1911","99"],["1912","7"],["1913","44"],["1914","94"],["1915","40"],["1916","58"],["1917","20"],["1918","14"],["1919","29"],["1920","46"],["1921","21"],["1922","31"],["1923","48"],["1924","8"],["1925","8"],["1926","5"],["1927","13"],["1928","23"],["1929","3"],["1930","2"],["1931","42"],["1933","22"],["1934","12"],["1935","34"],["1936","11"],["1937","82"],["1938","5"],["1939","32"],["1940","131"],["1941","21"],["1942","6"],["1943","23"],["1944","96"],["1945","38"],["1946","61"],["1947","90"],["1948","19"],["1949","66"],["1950","43"],["1951","35"],["1952","92"],["1953","52"],["1954","130"],["1955","53"],["1956","27"],["1957","51"],["1958","199"],["1959","66"],["1960","335"],["1961","68"],["1962","135"],["1963","276"],["1964","119"],["1965","65"],["1966","272"],["1967","144"],["1968","517"],["1969","521"],["1970","348"],["1971","244"],["1972","574"],["1973","287"],["1974","640"],["1975","677"],["1976","466"],["1977","1024"],["1978","692"],["1979","769"],["1980","846"],["1981","1427"],["1982","1508"],["1983","1440"],["1984","1123"],["1985","1942"],["1986","1756"],["1987","1608"],["1988","1567"],["1989","2560"],["1990","3006"],["1991","2119"],["1992","2567"],["1993","2174"],["1994","3205"],["1995","4579"],["1996","2084"],["1997","1995"],["1998","4814"],["1999","3361"],["2000","4219"],["2001","3323"],["2002","4652"],["2003","6810"],["2004","6005"],["2005","6731"],["2006","4907"],["2007","4713"],["2008","3288"]]

How to pronounce myoclonus?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say myoclonus in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of myoclonus in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of myoclonus in Pythagorean Numerology is: 2

Examples of myoclonus in a Sentence

1. Raj Dasgupta:

   It’s estimated that nearly 70 % of the population experience sleep starts at some point, medically speaking, hypnic jerks are classified as a type of myoclonus, which is a category of rapid, involuntary muscle movements. A classic example of myoclonus are hiccups.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=myoclonus
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Myoclonus
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Myoclonus
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=myoclonus
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=myoclonus