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A refresher on abnormal spontaneous EMG activities
This medical text details the evaluation of abnormal spontaneous electromyographic (EMG) activity, which serves as a vital diagnostic indicator for various neuromuscular disorders. While healthy skeletal muscles typically remain electrically quiet at rest, the source identifies specific waveforms and firing patterns that signal underlying nerve or muscle pathology. It categorizes these irregularities into muscle fiber potentials, such as fibrillation and myotonic discharges, and motor unit potentials, including fasciculations and myokymia. Each phenomenon is distinguished by its unique…
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