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. 1992;90(2):343-5.
doi: 10.1007/BF00227247.

Constancy of motor axon conduction time during growth in rats

X Y Chen  1 , J S Carp, J R Wolpaw
Affiliations

Constancy of motor axon conduction time during growth in rats

X Y Chen et al. Exp Brain Res. 1992.

Abstract

Axon conduction distance, conduction velocity, and conduction time were measured for individual triceps surae motoneurons in Sprague-Dawley rats weighing 230-630 g (i.e., age range 6-16 weeks). Both conduction distance (nerve length) and velocity were closely correlated with weight (r = 0.95 and r = 0.82, respectively). In contrast, conduction time did not change as weight increased nearly threefold. This striking constancy is probably due to a corresponding increase in axon diameter. It could contribute to maintenance of stable motor performance during rapid growth.

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References

    1. J Comp Neurol. 1973 Feb 15;147(4):547-52 - PubMed
    1. J Appl Physiol. 1953 Apr;5(10):589-93 - PubMed
    1. Neurosci Lett. 1978 Apr;8(1):17-20 - PubMed
    1. J Neurol Neurosurg Psychiatry. 1976 Sep;39(9):890-9 - PubMed
    1. Neurology. 1979 Jan;29(1):38-44 - PubMed

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