01216nas a2200229   4500008004100000022001400041245006700055210006600122260001200188300001400200490000700214520057800221653001600799653001500815653001500830653002100845653000800866100002100874700002300895700002100918856004700939       1992                        eng d  a0014-481900aConstancy of motor axon conduction time during growth in rats.0 aConstancy of motor axon conduction time during growth in rats  c08/1992  a343–3450 v903 aAxon 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.10adevelopment10amotoneuron10amotor axon10anerve conduction10arat1 aChen, Xiang Yang1 aCarp, Jonathan, S.1 aWolpaw, Jonathan  uhttp://www.ncbi.nlm.nih.gov/pubmed/1397148