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Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord

Publication ,  Journal Article
Bhowmik, M; Boyce, V; McConnell, G; Joyce, DM; Grill, WM; Lemay, MA
Published in: Bioengineering, Proceedings of the Northeast Conference
August 22, 2003

Using a biomechanical model of the cat hindlimb, we studied patterns of endpoint forces created by all muscle combinations of fourteen selected muscles, and compared them to the force patterns produced by intraspinal microstimulation of the lumbar spinal gray matter. We ran the model with two different activation schemes for the muscles. The first run used combinations of the fourteen selected muscles stimulated at the same level of activation. The second run used combinations where muscle forces were normalized to produce the same maximum end-point force. These results were compared to force field patterns obtained experimentally during intraspinal microstimulation. Although there were slight variations in the force patterns produced, both methods converged to four dominant patterns. When muscles in the model were normalized, some force patterns were found that were not observed experimentally. These results show the significance of specific levels of muscle activation to the production of the experimental patterns.

Duke Scholars

Published In

Bioengineering, Proceedings of the Northeast Conference

Publication Date

August 22, 2003

Start / End Page

37 / 38
 

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Bhowmik, M., Boyce, V., McConnell, G., Joyce, D. M., Grill, W. M., & Lemay, M. A. (2003). Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord. Bioengineering, Proceedings of the Northeast Conference, 37–38.
Bhowmik, M., V. Boyce, G. McConnell, D. M. Joyce, W. M. Grill, and M. A. Lemay. “Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord.” Bioengineering, Proceedings of the Northeast Conference, August 22, 2003, 37–38.
Bhowmik M, Boyce V, McConnell G, Joyce DM, Grill WM, Lemay MA. Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord. Bioengineering, Proceedings of the Northeast Conference. 2003 Aug 22;37–8.
Bhowmik, M., et al. “Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord.” Bioengineering, Proceedings of the Northeast Conference, Aug. 2003, pp. 37–38.
Bhowmik M, Boyce V, McConnell G, Joyce DM, Grill WM, Lemay MA. Experimental and biomechanical model force fields produced by intraspinal microstimulation of the cat lumbar spinal cord. Bioengineering, Proceedings of the Northeast Conference. 2003 Aug 22;37–38.

Published In

Bioengineering, Proceedings of the Northeast Conference

Publication Date

August 22, 2003

Start / End Page

37 / 38