Bioelectricity pp 271-299 | Cite as

Functional Neuromuscular Stimulation

  • Robert Plonsey
  • Roger C. Barr

Abstract

If a motor nerve is stimulated from an external electrode the resulting action potential will propagate to the innervated muscle and a twitch will be produced. The muscle responds to the artificially initiated nerve signal just as it would a naturally occurring signal. For patients with (for example) spinal cord injury, signals originating in the brain may be unable to reach the desired motoneuron because of a transected cord. In this case the affected muscle is paralyzed, although it may, otherwise, be healthy and capable of excitation and contraction. In this situation an artificial signal initiated in the nerve will evoke a response. Devising strategies for the stimulation of motoneurons to effect desired muscle contraction is the goal of functional neuromuscular stimulation, and the subject of this chapter.

Keywords

Functional Electrical Stimulation Nerve Trunk Charge Injection Virtual Cathode American Physiological Society 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. T. Mortimer, Motor prostheses, Handbook of Physiology, Sec. l: The Nervous System. Volume II, Motor Control, Part I, American Physiological Society, Bethesda, Maryland, 1981, pp. 155–187.Google Scholar
  2. 2.
    A. M. Dymond, Characteristics of the metal-tissue interface of stimulation electrodes, IEEE Trans. Biomed. Eng. BME 23: 274–280 (1976).Google Scholar
  3. 3.
    B. Frankenhauser and A. Huxley, The action potential in the myelinated nerve fiber of Xenopus Laevis as computed on the basis of voltage clamp data, J. Physiol. 171: 302–315 (1964).Google Scholar
  4. 4.
    D. McNeal, Analysis of a model for excitation of myelinated nerve, IEEE Trans. Biomed. Eng. 23: 329–337 (1976).CrossRefGoogle Scholar
  5. 5.
    M. Karkar, Nerve excitation with a cuff electrode—A model, M. S. Thesis. Case Western Reserve University, Cleveland, Ohio, 1975.Google Scholar
  6. 6.
    W. B. Marks, Polarization changes of stimulated cortical neurons caused by electrical stimulation at the cortical surface, in Functional Electrical Stimulation, J. B. Reswick and F. T. Hambrecht eds., Marcel Dekker, New York, 1977.Google Scholar
  7. 7.
    J. T. Mortimer, ed., Applied neural control, Eng. Med. Biol. Mag. 2:11–36 (1983);Google Scholar
  8. J. T. Mortimer, ed., Applied neural control, Eng. Med. Biol. Mag. 3:29–49 (1983).Google Scholar
  9. 8.
    F. T. Hambrecht and J. B. Reswick, Functional Electrical Stimulation, Marcel Dekker, New York, 1977.Google Scholar
  10. 9.
    J. B. Myklebust et al., Neural Stimulation,CRC Press, Boca Raton, Florida, 1985.Google Scholar

Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Robert Plonsey
    • 1
  • Roger C. Barr
    • 1
  1. 1.Duke UniversityDurhamUSA

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