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Constancy of motor axon conduction time during growth in rats (1992)

Chen, Xiang Yang ; Carp, Jonathan S. ; Wolpaw, Jonathan R.

Springer

Experimental brain research 90 (1992), S. 343-345

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ISSN: 1432-1106

Keywords: Motoneuron ; Motor axon ; Nerve conduction ; Development ; Rat

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00227247

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