Sensitivity was 10–20 μV/division, and the machine used was a TECA model B. Sweep speed, low frequency filter, high-frequency filter, duration of pulse, and rate of pulse were not specified.
This study was performed in the supine position, with the elbow and fingers slightly flexed.
Following the orthodromic method (Figs.
2), signals were recorded at the wrist (R1) and at the elbow (R2). At the wrist (R1), 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). The active electrode (A) was placed proximally to the distal crease at the wrist, 14 cm proximal to the stimulating cathode. The reference (R) was placed 2 cm proximally to the active electrode [
1]. At the elbow (R2), electrodes were placed on the antecubital fossa, just medial to the maximal pulsation of the brachial artery, with a 2–4-cm separation between the proximal cathode...
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