The machine used was a Nicolet Viking IV or Dantec Keypoint 4 electromyograph. Sensitivity, low-frequency filter, high-frequency filter, sweep speed, duration of pulse, and rate of pulse were not specified.
This study was performed in the supine position.
Following the orthodromic method [
1], signals were recorded proximally at the elbow (R), just above the crease of the antecubital fossa and medial to the biceps tendon (Fig.
1). The authors used a pair of 1 cm diameter stainless steel disk electrodes. The reference electrode was proximal. Following the antidromic method [
1], sensory nerve action potentials (SNAPs) were recorded to digit II (index finger) using saline-soaked Velcro ring electrodes (Fig.
2). The active recording (A) electrode was placed on the metacarpal joint; the reference (R) was placed distally, around the distal interphalangeal joint. The ground (G) electrode position was not specified (the figure shows the ground electrode...
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Chang MH, Wei SJ, Chiang HL et al (2002) Does direct measurement of forearm mixed nerve conduction velocity reflect actual nerve conduction velocity through the carpal tunnel? Clin Neurophysiol 113:1236–1240PubMedCrossRefGoogle Scholar