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Hybrid fibrillation potentials and positive sharp waves

✍ Scribed by Daniel Dumitru; John C. King

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 212 KB
Volume: 23
Category: Article
ISSN: 0148-639X
DOI: 10.1002/1097-4598(200008)23:8<1234::aid-mus12>3.0.co;2-3

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A finite muscle fiber simulation program which calculates the extracellular potential for any given intracellular action potential (IAP) was used to model a fibrillation potential and a positive sharp wave. This computer model employs the core conductor model assumptions for an active muscle fiber a

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Electromyographic recordings of fibrillation potentials (FPs) and positive sharp waves (PSWs) demonstrate transformation of FP to PSW and vice versa, atypical firing patterns, changes in waveform shape and amplitude, and time-locked potentials. The etiology of the waveform characteristics of FP and

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## ~~ The exact origin and precise morphologic explanation of positive sharp waves (PSWs) are presently lacking. Observing normal needle electromyographic insertional activity reveals two types of waveforms: (1) biphasic negative/positive spikes, and (2) positive spikes followed by a small negativ