Sensitivity was 20 μV/div (digit–wrist) and 50 μV/div (palm–wrist), low-frequency filter was 2 Hz, high-frequency filter was 10 kHz, duration of pulse was 0.1 ms, and rate of pulse was approximately 1/s. Sweep speed and the machine used were not specified.
This study was performed in the supine position.
Following the orthodromic method [
1], signals were recorded using surface electrodes at the wrist (R) from the median nerve by distal stimulation (digit II and digit III) and stimulation on the palm. Electrodes were placed between the tendons of the
flexor carpi radialis (FCR) and the
palmaris longus (PL) muscles (ideally proximal to the distal wrist crease). From the cathode stimulating points (−), proximal distance of 14 cm for digit II–wrist and digit III–wrist recordings (Figs.
2) and a fixed distance of 8 cm for the palm–wrist recording (Fig.
3) were premeasured and marked over the median nerve proximally to the wrist crease as...
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