Low-frequency filter was 20 Hz, high-frequency filter was 2 kHz, duration of pulse was 0.2 ms, rate of pulse was 1/s, and the machine used was a Dantec Neuromatic 2,000 M electromyograph. Sensitivity and sweep speed were not specified.
This study was performed in the supine position, with the hand in its anatomical position.
Following the orthodromic method [
1], sensory responses were recorded at the wrist (R) after the median nerve distal stimulation of the digital branches of digit I (Figs.
2), digit II (Figs.
4), digit III (Figs.
6), and digit IV (Fig.
7). Bipolar surface recording electrodes (silver/silver chloride electrodes covered by saline-soaked pads mounted in Perspex and fixed with a silicon rubber strap using minimal tension) were placed with a 2 cm interelectrode distance at the wrist, just proximal to the distal wrist crease (ideally between the tendons of the
flexor carpi radialis (FCR) and the
Median Nerve Ring Electrode Proximal Interphalangeal Joint Digital Nerve Ulnar Side
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