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Updated: Aug 19, 2026
Mapping Inhibitory Neuronal Circuits by Laser Scanning Photostimulation
Published on: October 6, 2011
The effect of stimulatory electrode placement on F-wave latency measurements
Background And Purpose:
The purpose of this study was to compare the effects of two commonly used stimulating electrode placements on F-wave latency.
Subjects:
Fifty healthy subjects aged 20 to 47 years were tested.
Methods:
F-waves were obtained from median and ulnar nerves bilaterally. A total of 200 nerves were tested.
Results:
A paired t-test indicated a statistically significant difference in F-wave latency between the two stimulating electrode placements. Stepwise linear regression equations demonstrated that our results were consistent with previously published studies.
Conclusion And Discussion:
Although a statistically significant difference exists between the two techniques, the magnitude of the difference is not likely to be clinically important. Therefore, the most important factor may be to use a consistent technique when investigating potential neuropathies.
