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An experimental study for analyzing nerve conduction velocity.

Authors
Type
Published Article
Journal
Electroencephalography and clinical neurophysiology
Publication Date
Volume
63
Issue
5
Pages
484–487
Identifiers
PMID: 2420564
Source
Medline

Abstract

Conduction velocities of so called A fibers in the bullfrog's sciatic-peroneal nerve were studied by means of a collision neurography in which a submaximal shock to the distal part of the nerve was used to block descending impulses from a supramaximal shock delivered to the proximal two parts of the same nerve respectively. The onset latency of the response to stimulation delivered to the proximal part was almost unchangeable within a certain range of the stimulus intensity of the distal part and fell into 3 classes, and then conduction velocities of so called A fibers were divided into 3 groups. These findings were in good agreement with those obtained by Erlanger and Gasser (1937) using monophasic recording. On the other hand, the distribution of the external diameter of myelinated nerve fibers examined was unimodal. It may depend on the change in threshold due to stimulation through fluid electrodes that the onset latency of the response of a nerve trunk was divided into 3 classes.

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