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Neuromyotonic discharge

Note the decrementing response. The top is recorded with a long sweep speed of 100 milliseconds per division, whereas the insert is at a regular sweep speed of 10 milliseconds per division. Note the very high frequency (150 to 250 Hz) repetitive discharge of a single motor unit. (Image used with permission from: Preston DC, Shapiro BE. Electromyography and neuromuscular disorders: clinical-electrophysiological correlations. Elsevier Saunders: London, 2013.)

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