A model for human skin impedance during surface functional neuromuscular stimulation

Author

Dorgan, Stephen J. ; Reilly, Richard B. ; Murray, Carl D.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland

Volume

4

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

1770

Abstract

A new mathematical model for the bulk electrical impedance of human skin is presented. This model is developed specifically for inclusion in Functional Neuromuscular Stimulation (FNS) applications where the stimulation pulses are square or rectangular in shape. The model predictions are compared to experimental data identified during constant voltage and constant current transcutaneous stimulation. It is found that this model captures a variety of nonlinear time-varying effects observed in the skin impedance when stimulating using either constant current or constant voltage protocols

Keywords

bioelectric phenomena; electric impedance; equivalent circuits; neuromuscular stimulation; patient rehabilitation; physiological models; skin; bulk electrical impedance; constant current transcutaneous stimulation; constant voltage transcutaneous stimulation; control strategies design; equivalent circuit model; human skin impedance; mathematical model; nonlinear time-varying effects; rectangular pulses; rehabilitation; spinal cord injury; square pulses; surface functional neuromuscular stimulation; Humans; Mathematical model; Neuromuscular stimulation; Predictive models; Protocols; Pulse shaping methods; Shape; Skin; Surface impedance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.757069

Filename

757069