Skip to main content
NCBI home page
The Journal of Physiology logoLink to The Journal of Physiology
. 1968 Sep;198(1):167–178. doi: 10.1113/jphysiol.1968.sp008599

Conduction velocity in proximal and distal portions of forelimb axons in the baboon

J F M Clough, D Kernell, C G Phillips
PMCID: PMC1365315  PMID: 16992311

Abstract

1. Peripheral nerves of the baboon's forelimb were stimulated at different sites, and the latencies of antidromic action potentials were measured in intracellular records from forelimb motoneurones.

2. The conduction velocity of single motor axons was slower in the brachial plexus than in the nerves of the arm and forearm. This proximal slowing of conduction velocity was more marked for rapidly conducting axons than for the more slowly conducting ones.

3. Gross recordings from dorsal and ventral roots showed that the conduction velocity was slower in the brachial plexus than in the arm for fast afferent as well as efferent nerve fibres.

4. The proximal slowing of conduction velocity was shown to be due neither to errors of measurement nor to proximo-distal differences of temperature.

Full text

PDF
167

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Burke R. E. Motor unit types of cat triceps surae muscle. J Physiol. 1967 Nov;193(1):141–160. doi: 10.1113/jphysiol.1967.sp008348. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. GASSEL M. M., TROJABORG W. CLINICAL AND ELECTROPHYSIOLOGICAL STUDY OF THE PATTERN OF CONDUCTION TIMES IN THE DISTRIBUTION OF THE SCIATIC NERVE. J Neurol Neurosurg Psychiatry. 1964 Aug;27:351–357. doi: 10.1136/jnnp.27.4.351. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. HERN J. E., LANDGREN S., PHILLIPS C. G., PORTER R. Selective excitation of corticofugal neurones by surface-anodal stimulation of the baboon's motor cortex. J Physiol. 1962 Apr;161:73–90. doi: 10.1113/jphysiol.1962.sp006874. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Huxley A. F., Stämpfli R. Evidence for saltatory conduction in peripheral myelinated nerve fibres. J Physiol. 1949 May 15;108(3):315–339. [PMC free article] [PubMed] [Google Scholar]
  5. Kernell D. Input resistance, electrical excitability, and size of ventral horn cells in cat spinal cord. Science. 1966 Jun 17;152(3729):1637–1640. doi: 10.1126/science.152.3729.1637. [DOI] [PubMed] [Google Scholar]
  6. Mavor H., Atcheson J. B. Posterior tibial nerve conduction. Velocity of sensory and motor fibers. Arch Neurol. 1966 Jun;14(6):661–669. doi: 10.1001/archneur.1966.00470120093012. [DOI] [PubMed] [Google Scholar]
  7. Mawdsley C., Mayer R. F. Nerve conduction in alcoholic polyneuropathy. Brain. 1965 Jun;88(2):335–356. doi: 10.1093/brain/88.2.335. [DOI] [PubMed] [Google Scholar]
  8. McLeod J. G., Wray S. H. Conduction velocity and fibre diameter of the median and ulnar nerves of the baboon. J Neurol Neurosurg Psychiatry. 1967 Jun;30(3):240–247. doi: 10.1136/jnnp.30.3.240. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. RUSHTON W. A. H. A theory of the effects of fibre size in medullated nerve. J Physiol. 1951 Sep;115(1):101–122. doi: 10.1113/jphysiol.1951.sp004655. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. TROJABORG W. MOTOR NERVE CONDUCTION VELOCITIES IN NORMAL SUBJECTS WITH PARTICULAR REFERENCE TO THE CONDUCTION IN PROXIMAL AND DISTAL SEGMENTS OF MEDIAN AND ULNAR NERVE. Electroencephalogr Clin Neurophysiol. 1964 Sep;17:314–321. doi: 10.1016/0013-4694(64)90132-4. [DOI] [PubMed] [Google Scholar]

Articles from The Journal of Physiology are provided here courtesy of The Physiological Society

RESOURCES