Realistic FEM Models for Electrode Design Optimization
Selectively stimulating different muscles innervated by the femoral nerve with a single, multicontact electrode
The long-term goal of our research is to restore
standing function via selective activation of target fascicles in
the femoral nerve by a flat interface nerve electrode (FINE).
The optimal number and location of contacts within a FINE
had not been determined previously. A realistic threedimensional
finite element model based on a cross section of
human femoral nerve and FINE is presented. Simulated
voltages are applied as an extracellular field to the MRG
double-cable axon model. Initial simulations indicate that
optimal contacts may exist for each fascicular group but an
acceptable selectivity may require nerve reshaping.
Ref: Schiefer, M., R. Triolo, D.J. Tyler, (2008) “A Model of Selective Activation of the Femoral Nerve with a Flat Interface Nerve Electrode for a Lower Extremity Neuroprosthesis” IEEE Trans Neural Eng and Rehab, 16(2), 195-204 (Cover).
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