Myoclonus
Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements. [ http://www.ncbi.nlm.nih.gov/pubmed/20589866 ]
Term info
Myoclonus
- Myoclonic jerks
Myoclonus may be synchronous (several muscle contracting simultaneously), spreading (several muscles contracting in sequence), or asynchronous (several muscles contracting with varying and unpredictable relative timing). Myoclonus is characterized by sudden unidirectional movement due to muscle contraction (positive myoclonus) or due to sudden brief muscle relaxation (negative myoclonus).
HP:0007087, HP:0002535
Jerking
human_phenotype
Involuntary jerking movements
HP:0001336