Single fibre action potentials in skeletal muscle related to recording distances

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Veen, B.K. van and Mast, E. and Busschers, R. and Verloop, A.J. and Wallinga, W. and Rutten, W.L.C. and Gerrits, P.O. and Boom, H.B.K. (1994) Single fibre action potentials in skeletal muscle related to recording distances. Journal of Electromyography and Kinesiology, 4 (1). pp. 37-46. ISSN 1050-6411

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Abstract:Single muscle fibre action potentials (SFAPs) are considered to be functions of a bioelectrical source and electrical conductivity parameters of the medium. In most model studies SFAPs are computed as a convolution of the bioelectrical source with a transfer function. Calculated peak-to-peak amplitudes of SFAPs decrease with increasing recording distances. In this paper an experimental validation of model results is presented. Experiments were carried out on the m. extensor digitorum longus (EDL) of the rat. Using a method including fluorescent labelling of the active fibre, the distance between the active fibre and the recording electrode was derived. With another method, the decline of the peak-to-peak amplitude of SFAPs detected along a multi-electrode was obtained. With both experimental methods, in general peak-to-peak amplitudes of SFAPs decreased with increasing recording distances, as was found in model results with present volume conduction theory. However, this behaviour was not found in all experiments. The rate of decline of the peak-to-peak amplitudes with recording distance was always less than in models.
Item Type:Article
Copyright:© 1994 Elsevier Science
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/15366
Official URL:http://dx.doi.org/10.1016/1050-6411(94)90025-6
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