Sensitivity was 5 μV/division, sweep speed was 5 ms/division, duration of pulse was 0.2 ms, and the machine used was a DISA 14C11. Low-frequency filter, high-frequency filter, and rate of pulse were not specified.
This study was performed in the supine position.
Following the orthodromic method , using needle electrodes, signals were recorded at two different points (Figs. 1 and 2): at the wrist (R1) and at the elbow (R2). To record from sensory nerve fibers at the wrist and elbow, a stainless steel needle with a bared tip of 0.3 cm was placed near the nerve at a standard position; the remote electrode was placed at the same level as the near-nerve electrode at a distance of 4–6 cm from it. At the wrist (R1), the subdermal electrodes (both active and reference electrodes) were inserted proximally to the distal wrist crease. At the elbow (R2), the electrodes were placed over the median nerve on the antecubital fossa. Ground (G) electrode position...
Public Health Neurology
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Buchthal F, Rosenfalck A, Trojaborg W (1974) Electrophysiological findings in entrapment of the median nerve at wrist and elbow. J Neurol Neurosurg Psychiatry 37:340–360PubMedCentralPubMedCrossRefGoogle Scholar