Central conduction velocity (lumbar-vertex) in man calculated by means of a new method. Studies on variability, the effects of sex, age and different equipments.
Lumbar-to-scalp conduction velocity has been measured in 40 volunteers of both sexes, subdivided in two age groups, during uni- and bilateral peroneal nerve stimulation. It was calculated from the lumbar response to the main positive component of the simultaneously recorded, short latency scalp potentials (P3a). The mean value was 39.7 +/- 2.4 m/s (mean +/- SD). The mean side difference during unilateral stimulation was 2.08 +/- 1.6 m/s. It was extremely steady in a group of subjects repeatedly tested during a 14-month follow-up, even when different equipment was used.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004558:Electric Stimulation; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D007717:Knee; D008161:Lumbosacral Region; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D010543:Peroneal Nerve / Q000502:physiology*; D012535:Scalp / Q000294:innervation*; D012737:Sex Factors; D013116:Spinal Cord / Q000502:physiology*