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Development and evaluation of an electrode array for foot drop stimulation

Two aspects about surface functional electrical stimulation for foot drop treatment will be presented: • Design of the electrode array and associated electrode-skin interface, • Exploration of approaches for the selection of subset(s) of the electrode array and their associated stimulation intensities that, when stimulated, achieves the desired foot response. The electrode array design work included finite element modelling and experimental work to understand the effects of electrode geometry and electrode-skin interface (hydrogel) properties on stimulation selectivity and stimulation-related discomfort. This work resulted in a practical design for an 8×8 flexible electrode array and associated hydrogel interface layer, as well as an improved understanding of the influence of hydrogel properties on stimulation-related discomfort. An experiment was conducted using the electrode array with its hydrogel interface and a 64 channel stimulator. The experiment demonstrated an automatic approach to identify the subsets of electrodes in the array and their associated stimulation intensities to elicit the desired motor response (in this case, the desired response was neutral foot dorsiflexion with minimal inversion and eversion) and explored the feasibility of rapidly searching the array to identify the most appropriate subset of electrodes.

Type of Seminar:
Ph.D. Seminar
Ning Sha
Salford University, Manchester, UK
Mar 06, 2008   16:30

ETL K 25
Contact Person:

Dr. S. Micera
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