Wrist – Digit I, Wrist – Digit II, Wrist – Digit IV

Surface Recording Technique, Antidromic Study
  • Giuliano Gentili
  • Mario Di Napoli

Original Settings

Sensitivity, low-frequency filter, high-frequency filter, sweep speed, duration of pulse, rate of pulse, and the machine used were not specified.


This study was performed in the supine position.


Following the antidromic method [ 1], the author performed several nerve conduction tests: median–radial nerve latency comparative study to digit I, median–ulnar nerve latency comparative study to digit IV, and median recording to digit III alone. All sensory nerve action potentials (SNAPs) were recorded percutaneously. For median–radial nerve comparative test (Fig. 1), the electrodes were placed over digit I (thumb) at 13 cm from the stimulation of the median and radial nerves, respectively. The author did not specify the exact position of the recording active and reference electrodes. The figure shows the active electrode (A) placed at the base of digit I, 13 cm from the stimulation points at the wrist, for the median (S1) and radial (S2) nerves,...


  1. 1.
    Brenninkmeyer R (1979) The carpal tunnel syndrome and the antidromic sensory latencies to the first and the fourth finger. Acta Neurol Scand Suppl 73:119Google Scholar
  2. 2.
    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 ServiceS. Camillo de’ Lellis General HospitalRietiItaly

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