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Quantification of recruitment properties of multiple contact cuff electrodes.

Publication ,  Journal Article
Grill, WM; Mortimer, JT
Published in: IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
June 1996

Nerve-based stimulating electrodes provide the technology for advancing the function of motor system neural prostheses. The goal of this work was to measure and quantify the recruitment properties of a 12 contact spiral nerve cuff electrode. The cuff was implanted on the cat sciatic nerve trunk, which consists of at least four distinct motor fascicles, and the torque generated at the ankle joint by selective stimulation of the nerve was recorded in nine acute experiments. Comparisons of torques generated with the cuff to torques generated by selective stimulation of individual nerve branches indicated that the cuff allowed selective activation of individual nerve fascicles. Selectivity was dependent on the relative location of the electrode contacts and the nerve fascicles, as well as the size and relative spacing of neighboring fascicles. Selective stimulation of individual nerve fascicles allowed independent and graded control of dorsiflexion and plantarflexion torques in all nine experiments. Field steering currents improved selectivity as reflected by significant increases in the maximum torques that could be generated before spillover to other fascicles, significant increases in the difference between the current amplitude at spillover and the current amplitude at threshold, and significant increases in the slope of the current distance relationship.

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Published In

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

DOI

ISSN

1063-6528

Publication Date

June 1996

Volume

4

Issue

2

Start / End Page

49 / 62

Related Subject Headings

  • Sciatic Nerve
  • Recruitment, Neurophysiological
  • Prosthesis Design
  • Electrodes, Implanted
  • Electric Stimulation
  • Cats
  • Biomedical Engineering
  • Biomechanical Phenomena
  • Ankle Joint
  • Animals
 

Citation

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Grill, W. M., & Mortimer, J. T. (1996). Quantification of recruitment properties of multiple contact cuff electrodes. IEEE Transactions on Rehabilitation Engineering : A Publication of the IEEE Engineering in Medicine and Biology Society, 4(2), 49–62. https://doi.org/10.1109/86.506402
Grill, W. M., and J. T. Mortimer. “Quantification of recruitment properties of multiple contact cuff electrodes.IEEE Transactions on Rehabilitation Engineering : A Publication of the IEEE Engineering in Medicine and Biology Society 4, no. 2 (June 1996): 49–62. https://doi.org/10.1109/86.506402.
Grill WM, Mortimer JT. Quantification of recruitment properties of multiple contact cuff electrodes. IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society. 1996 Jun;4(2):49–62.
Grill, W. M., and J. T. Mortimer. “Quantification of recruitment properties of multiple contact cuff electrodes.IEEE Transactions on Rehabilitation Engineering : A Publication of the IEEE Engineering in Medicine and Biology Society, vol. 4, no. 2, June 1996, pp. 49–62. Epmc, doi:10.1109/86.506402.
Grill WM, Mortimer JT. Quantification of recruitment properties of multiple contact cuff electrodes. IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society. 1996 Jun;4(2):49–62.

Published In

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

DOI

ISSN

1063-6528

Publication Date

June 1996

Volume

4

Issue

2

Start / End Page

49 / 62

Related Subject Headings

  • Sciatic Nerve
  • Recruitment, Neurophysiological
  • Prosthesis Design
  • Electrodes, Implanted
  • Electric Stimulation
  • Cats
  • Biomedical Engineering
  • Biomechanical Phenomena
  • Ankle Joint
  • Animals