Surface electromyography using electrode arrays: A study of motor neuron disease

The mechanomyography of persons after stroke during isometric voluntary contractions

“…Although the results on the effect of the contraction level on EMG MPF were diverse in the literature (Esposito et al, 1996;Moritani and Muro, 1987;Petrofsky and Lind, 1980), a decrease in EMG MPF in relation to the increase of output force level on the healthy biceps brachii with bipolar detecting configuration has been shown in the repeatability test conducted by Rainoldi's group (Rainoldi et al, 1999). The decrease of EMG MPF versus the increase in contraction level was possibly related to a wider spreading of the muscle fiber conduction velocities (Rainoldi et al, 1999), the synchronization among the motor units (Weytjens and van Steenberghe, 1984), and depth-filtering of the geometric distribution of the active motor units Wood et al, 2001), which were the known factors bringing the EMG PDS to lower frequencies.…”

A multiple-layer finite-element model of the surface EMG signal

“…To simulate more physiological limb geometries, numerical methods such as boundary or finite-element (FE) methods must be employed [7], [8]. Although the application of numerical methods to surface EMG has been limited to date, boundary and finite-element models previously presented [8]- [10], illustrate how numerical methods may be successfully used to model the electrical fields around active nerve and muscle fibers.…”

Clinical applications of high-density surface EMG: A systematic review

“…A diminished central activation of the muscle was thought to be responsible for this phenomenon. Table 4 lists the six HD-sEMG studies of MND and neuropathies (van der Hoeven et al, 1993;Roeleveld et al, 1998;Wood et al, 2001;El Dassouki and Lefaucheur, 2002;Bahm et al, 2003;Drost et al, 2004a). The case report of Lanzetta et al (2005), who evaluated recovery of a transplanted hand, is not listed in Table 4.…”