phonomyoclonus

Clonic spasms of muscles in response to aural stimuli. [phono- + G. mys, muscle, + klonos, tumult]

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pho·no·my·oc·lo·nus (fo″no-mi-okґlə-nəs) myoclonus in which a sound is heard on auscultation of an affected muscle, indicating fibrillar contractions.