Fig. 2

EMG monopolar signals of brachioradialis during a contraction at 30% MVC. The signals were recorded using Array 1. The figure displays the channels recorded over three columns (C15-C17) and six rows (R1-R6) in the original distribution of the array. It is possible to observe the propagation of Motor Unit Action Potentials along the muscle fiber direction, under the three columns of electrodes.