Modifica di Clinic Electromyography (sezione)

====Key Clinical Data====
In muscle diseases, IP activity increases more rapidly than the absolute muscle strength compared to a normal muscle. The full interference pattern is achieved with a lower contraction force than in a normal muscle. In many muscle diseases, IP amplitude is reduced, reflecting the smaller cross-section of the muscle components. However, MUP amplitude may increase in some myopathies, reflecting the presence of hypertrophic individual muscle fibers near the recording electrode. In such cases, IP peak amplitude may not differ from normal patterns.

In neuropathic diseases, the number of MUPs activated at a given force level is significantly lower than normal. However, when the sprouting mechanism is activated, MUP amplitude increases, and consequently, the interference pattern is reduced but larger than normal.