title: The effect of stimulatory electrode placement on F-wave latency measurements.
abstract: OBJECTIVE
  The purpose of this study was to compare the effects of two commonly used stimulating electrode placements on F-wave latency.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.forename: G L
authors.initials: GL
authors.lastname: Terry
authors.forename: T M
authors.initials: TM
authors.lastname: Baldwin
authors.forename: S E
authors.initials: SE
authors.lastname: Morgan
authors.forename: M A
authors.initials: MA
authors.lastname: Murphy
authors.forename: R S
authors.initials: RS
authors.lastname: Wainner
authors.forename: R L
authors.initials: RL
authors.lastname: Clayton
authors.forename: F B
authors.initials: FB
authors.lastname: Underwood
mesh_terms: D000328:Adult; D004576:Electromyography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000502:physiology; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000294:innervation*; D009431:Neural Conduction; D014459:Ulnar Nerve / Q000502:physiology