Figure 1.

Depiction of the determination of electromechanical delay measurement from the electromyographic (EMG) and mechanomyographic (MMG) signals. The onset of the EMG and MMG signals were determined by a change greater than 3 standard deviations (SD) from a baseline/resting value. In addition, the location of the gross lateral movement (GLM) amplitude and duration as they relate to the mechanomyographic signal. The GLM Amplitude was determined from the absolute minimum to maximal value while the duration was determined from the onset of the mechanomyographic signal to the onset of the small lateral oscillations of the muscle.