K H Polasek et al 2009 J. Neural Eng. 6 066005 doi:10.1088/1741-2560/6/6/066005
K H Polasek1, M A Schiefer1, G C J Pinault2, R J Triolo1,2,3 and D J Tyler1,2
Show affiliationsEvaluation of the Case Western Reserve University spiral nerve cuff electrode on the femoral nerve trunk was performed intraoperatively in four subjects undergoing femoral-popliteal bypass surgery. The threshold, nerve size and selective activation capabilities of the electrode were examined. The activation thresholds for the first muscle to be recruited were 6.3, 9, 10.6, and 37.4 nC with pulse amplitudes ranging from 0.3 to 1 mA. The femoral nerve was found to have an elliptical cross-section with a major axis average length of 9 mm (8–12 mm) and a minor axis length of 1.5 mm. In all four subjects selective activation of the sartorius was obtained. In two subjects, the rectus femoris could also be selectively activated and in one subject the vastus medialis was selectively activated. Each electrode had four independent contacts that were evaluated separately. Small air bubbles were formed in the space over some contacts, preventing stimulation. This occurred in one contact in each electrode, leaving three effective stimulation channels. This issue has been corrected for future studies.
87.19.R- Mechanical and electrical properties of tissues and organs
Issue 6 (December 2009)
Received 13 March 2009, accepted for publication 12 October 2009
Published 9 November 2009
K H Polasek et al 2009 J. Neural Eng. 6 066005
Basmah Riaz et al. 2006 ApJ 650 1133
Joy S Singarayer et al 2009 Environ. Res. Lett. 4 045110
J. Jedrzejewski and T. Krokhmalskii 2007 EPL 78 37002
Tom Chau and Sotirios Damouras 2009 J. Neural Eng. 6 058002
Dipak Ghosh et al 2007 EPL 80 22003
J Feng et al 2005 J. Phys.: Condens. Matter 17 S1339
David Akkurt et al 2009 J. Neural Eng. 6 056004
Thomas J. J. Kehoe et al. 2003 The Astronomical Journal 126 3108
R. C. Brüns et al. 2009 ApJ 702 1268