SLIDING WINDOW AVERAGING IN NORMAL AND PATHOLOGICAL MOTOR UNIT ACTION POTENTIAL TRAINS

The analysis of motor unit action potential (MUAP) is one of the fundamental tests in routine clinical neurophysiology. Electromyography (EMG) signals are recorded intramuscularly with conventional concentric needle electrodes. These signals usually contain several MUAP trains. Manual, semi or completely automatic techniques (Nandedkar, 2002; Merletti and Parker, 2004) are used for decompose EMG signals into different MUAP trains. From each MUAP train a representative waveform is formed (Malanda et al., 2015) and characterized with clinically useful parameters (Stålberg et al., 1986; Zalewska and Hausmanowa-Petrusewicz, 1995; Nandedkar, 2002; Kimura, 2002).

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