Optimal Stimulus Electrode Dipole Orientation
Copyright © 1999 Canadian Medical and Biological Engineering Society. Posted with permission from CMBES.
NOTE: At the time of publication, the author Robert Szlavik was not yet affiliated with Cal Poly.
The elicited M-Wave that results from the surface stimulation of the median nerve is highly dependent upon the geometric orientation of the stimulus electrode dipole. This phenomenon could make standardization of M-Wave measurements between tests performed on a single subject problematic. We present an experimental paradigm that illustrates this variability in terms of an estimate of the slope of the M-Wave peak potential versus stimulus current amplitude and the minimum stimulus current required to consistently elicit a minimal response. The design of an automated instrument for selecting the optimal stimulus electrode dipole orientation based on the electrode orientation experiment is proposed.
Robert B. Szlavik and Hubert De Bruin. "Optimal Stimulus Electrode Dipole Orientation" Proceedings of the 25th Canadian Medical and Biological Engineering Conference: London.. Jan. 1999.
Available at: http://works.bepress.com/rszlavik/16