caa a22 4500 465783171 CHVBK 20180323112001.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF02442611 doi (NATIONALLICENCE)springer-10.1007/BF02442611 Selective noninvasive electrode to study myoelectric signals [Elektronische Daten] [H. Bhullar, G. Loudon, J. Fothergill, N. Jones] The paper describes the design and construction of a selective surface electrode for use in a clinical environment. The main criterion of the design was to enable the recognition of individual motor unit action potential trains (MUAPTs) at moderate force levels. The main features of the electrode are, first, a small concentric bipolar arrangement to avoid electrode/muscle fibre alignment problems and to allow measurements within a small, well defined probed volume; secondly, the non-requirements for conducting paste or gel; and thirdly, the casing acting as an earth plate. All of these simplify its use. The results of tests undertaken with the electrode showed that it was able to pick up individual MUAPTs at up to 20 per cent of maximum voluntary contraction from the first dorsal interroseous muscle. Tests were carried out on the small hand muscles to further demonstrate the usefulness of the electrode. A computer program was written to calculate the shift in frequency of the power spectrum of the recorded myoelectric signal with muscle fatigue and hence indirectly to demonstrate the ability of the electrode to detect the reduction in muscle fibre conduction velocity. IFMBE, 1990 Electrodes nationallicence Myoelectric signals nationallicence Selectivity nationallicence Motor unit nationallicence Action potential train nationallicence Muscle fibre conduction velocity nationallicence Bhullar H. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut Loudon G. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut Fothergill J. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut Jones N. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/6(1990-11-01), 581-586 0140-0118 28:6<581 1990 28 11517 https://doi.org/10.1007/BF02442611 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02442611 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhullar H. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut NATIONALLICENCE 700 1- Loudon G. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut NATIONALLICENCE 700 1- Fothergill J. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut NATIONALLICENCE 700 1- Jones N. Department of Engineering, Leicester University, LE1 7RH, Leicester, UK aut NATIONALLICENCE 773 0- Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/6(1990-11-01), 581-586 0140-0118 28:6<581 1990 28 11517 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer