Muscle recruitment with intrafascicular electrodes

Update Item Information
Publication Type Journal Article
School or College College of Engineering
Department Bioengineering
Creator Horch, Kenneth W.
Other Author Nannini, Nicola
Title Muscle recruitment with intrafascicular electrodes
Date 1991
Description We have studied muscle recruitment with Tefloninsulated, 25 pm diameter, Pt-Ir intrafasicular electrodes implanted in nerves innervating the gastrocnemius and soleus muscles of cats. The purpose of this study was to measure the performance of these bipolar electrodes, which had been designed to optimize their ability to record unit activity from peripheral nerves, as stimulating electrodes. Recruitment curves identified the optimal stimulus configuration as a biphasic rectangular pulse, with an interphase separation of about 500 ps and a duration of about 50 ps. The current required for a half-maximal twitch contraction was on the order of 50 PA. Current and charge densities needed for stimulation were well below levels believed to be safe for the tissue and electrode materials involved. When the spinal reflex pathway was interrupted by crushing the nerve, the force produced by a given stimulus changed in some cases, but not in others, implying that the spinal reflex contribution was not the same in all the implants. We conclude that intrafascicular recording electrodes are also a potentially valuable technology for functional neuromuscular stimulation, and warrant further development.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Volume 38
Issue 8
Subject Functional neuromuscular stimulation (FNS); Intrafascicular electrode
Subject MESH Paralysis; Recruitment (Neurology)
Language eng
Bibliographic Citation Horch. K. W., & Nannini, N. (1991). Muscle recruitment with intrafascicular electrodes. IEEE transactions on biomedical engineering, 38(8).
Rights Management (c) Institute of Electrical and Electronics Engineers (IEEE)
Format Medium application/pdf
Format Extent 699,143 Bytes
Identifier ir-main,3822
ARK ark:/87278/s6vd7gmx
Setname ir_uspace
ID 703171
Reference URL https://collections.lib.utah.edu/ark:/87278/s6vd7gmx
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