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THE STUDIES ON THE CONDUCTION VELOCITIES OF MOTOR NERVES IN THE NORMAL AND THE NEUROMUSCULAR DISEASES ; ESPECIALLY ON THE RESIDUAL LATENCY Akira TERAO 1 , Ikuko SHIRAHIGE 1 , Iwao TOKUNAGA 1 1Dept. of Neuropsychiatry, Okayama Univ., School of Med. pp.569-572
Published Date 1965/6/1
DOI https://doi.org/10.11477/mf.1406201860
  • Abstract
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We measured the maximum conduction velocities of ulnar nerve, median nerve and posterior tibial nerve in the normal and the neuromuscular diseases and estimated the residual latency of ulnar nerve. In the normal group, mean maximum conduction velocity of ulnar nerve was 59.6±4.5 m/sec, whereas the mean velocity in the neuromuscular disease was 52.9±5.1m /sec, which was slower than in the normal. In contrast with these two groups the velocity in the group of peripheral nerve disturbances markedly decreased to 35.6m/sec. The normal residual latency was 1.38m/sec but it slightly delayed in the neuromuscular diseases and showed 2.43msec.

We also discussed the relation between the conduction velocities and the pathological changes of peripheral nerve in two clinical cases of spinal progressive muscle atrophy.


Copyright © 1965, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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