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Selective control of muscle activation with a multipolar nerve cuff electrode.

Publication ,  Journal Article
Veraart, C; Grill, WM; Mortimer, JT
Published in: IEEE transactions on bio-medical engineering
July 1993

Acute experiments were performed on adult cats to study selective activation of medial gastrocnemius, soleus, tibialis anterior, and extensor digitorum longus with a cuff electrode. A spiral nerve cuff containing twelve "dot" electrodes was implanted around the sciatic nerve and evoked muscle twitch forces were recorded in six experiments. Spatially isolated "dot" electrodes in four geometries: monopolar, longitudinal tripolar, tripolar with four common anodes, and two parallel tripoles, were combined with transverse field steering current(s) from an anode(s) located 180 degrees around from the cathode(s) to activate different regions of the nerve trunk. To quantify the degree of selectivity, a selectivity index was defined as the ratio of the force in one muscle to the force in all four muscles in response to a particular stimulus. The selectivity index was used to construct recruitment curves for a muscle with the optimal degree of selectivity. Physiological responses were correlated with the anatomical structure of the sciatic nerve by identifying the nerve fascicles innervating the four muscles, and by determining the relative positions of the electrodes and the nerve fascicles. The results indicated that the use of transverse field steering current improved selectivity. We also found that tripoles with individual dot anodes were more selective than tripoles with four common dot anodes. Stimulation with two parallel tripoles was effective in activating selectively fascicles that could not be activated selectively with only a single tripole. The multipolar cuff proved an effective method to control selectively and progressively the force in muscles innervated by fascicles that were well defined at the level of the cuff.

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Published In

IEEE transactions on bio-medical engineering

DOI

EISSN

1558-2531

ISSN

0018-9294

Publication Date

July 1993

Volume

40

Issue

7

Start / End Page

640 / 653

Related Subject Headings

  • Time Factors
  • Sensitivity and Specificity
  • Sciatic Nerve
  • Muscles
  • Isometric Contraction
  • Equipment Design
  • Electrodes
  • Electric Stimulation
  • Cats
  • Biomedical Engineering
 

Citation

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Veraart, C., Grill, W. M., & Mortimer, J. T. (1993). Selective control of muscle activation with a multipolar nerve cuff electrode. IEEE Transactions on Bio-Medical Engineering, 40(7), 640–653. https://doi.org/10.1109/10.237694
Veraart, C., W. M. Grill, and J. T. Mortimer. “Selective control of muscle activation with a multipolar nerve cuff electrode.IEEE Transactions on Bio-Medical Engineering 40, no. 7 (July 1993): 640–53. https://doi.org/10.1109/10.237694.
Veraart C, Grill WM, Mortimer JT. Selective control of muscle activation with a multipolar nerve cuff electrode. IEEE transactions on bio-medical engineering. 1993 Jul;40(7):640–53.
Veraart, C., et al. “Selective control of muscle activation with a multipolar nerve cuff electrode.IEEE Transactions on Bio-Medical Engineering, vol. 40, no. 7, July 1993, pp. 640–53. Epmc, doi:10.1109/10.237694.
Veraart C, Grill WM, Mortimer JT. Selective control of muscle activation with a multipolar nerve cuff electrode. IEEE transactions on bio-medical engineering. 1993 Jul;40(7):640–653.

Published In

IEEE transactions on bio-medical engineering

DOI

EISSN

1558-2531

ISSN

0018-9294

Publication Date

July 1993

Volume

40

Issue

7

Start / End Page

640 / 653

Related Subject Headings

  • Time Factors
  • Sensitivity and Specificity
  • Sciatic Nerve
  • Muscles
  • Isometric Contraction
  • Equipment Design
  • Electrodes
  • Electric Stimulation
  • Cats
  • Biomedical Engineering