Wrist – Hand

Surface Recording Technique, Study from Abductor Pollicis Brevis (APB) Muscle
  • Giuliano Gentili
  • Mario Di Napoli


Original Settings: Sensitivity was 200 μV/division, sweep speed was 5 ms/division and 6.25 ms/division, duration of pulse was 50–200 μs, rate of pulse was 1 Hz, and the machines used were a Medelec MS8 and an MS6 EMG. Low-frequency filter and high-frequency filter were not specified.


Amyotrophic Lateral Sclerosis Median Nerve Identical Shape Sensory Conduction Grand Total 
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  1. 1.
    Macleod WN (1987) Repeater F waves: a comparison of sensitivity with sensory antidromic wrist to palm latency and distal motor latency in the diagnosis of carpal tunnel syndrome. Neurology 37:773–778PubMedCrossRefGoogle Scholar
  2. 2.
    Chroni E, Serrano Tendero I, Rostedt Punga A et al (2012) Usefulness of assessing repeater F-waves in routine studies. Muscle Nerve 45:477–485PubMedCrossRefGoogle Scholar
  3. 3.
    Bland JDP (2000) A neurophysiological grading scale for carpal tunnel syndrome. Muscle Nerve 23:1280–1283PubMedCrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Giuliano Gentili
    • 1
  • Mario Di Napoli
    • 1
  1. 1.Neurological Service S. Camillo de’ Lellis General HospitalRietiItaly

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