Conduction velocity and diameter of nerve fibers
Conduction velocity and diameter of nerve fibers
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DOI：
10.1152/ajplegacy.1939.127.1.131
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发表时间：
1939-08-01
影响因子：
--
通讯作者：
Hursh, JB
中科院分区：
文献类型：
--
作者：
Hursh, JB
通过一种实验方法研究了神经纤维直径与其传导速度之间的关系，该实验方法基于一个被普遍接受的假设，即在任何给定的神经中，最大的纤维以最高的速度传导。因此，从示波器记录中测量了猫和小猫各种神经干中最快纤维的传导速度，并将以此方式确定的速度与在神经干的石蜡横切面上测量的最大纤维的外径相关联。所测量的速度范围的极限是每秒8米到117米。速度与直径相关的最佳曲线是一条直线。它在速度范围的所有部分都同样适用。根据速度随直径的平方或平方根变化的假设绘制的曲线与观测点有很大差异。绘制了猫和小猫神经纤维的节间长度与纤维直径相关的比较数据。
The relationship between the nerve fiber diam. and its velocity was investigated by an exptl. procedure depending upon the generally accepted assumption that in any given nerve the largest fiber conducts at the highest velocity. Thus the conduction velocities in the fastest fibers in various nerve trunks of the cat and the kitten were measured from oscillographic records, and the velocities detd. in this manner were correlated with the outside diams. of the largest fibers as measured in paraffin cross-sections of the nerve trunks. The limits of the range of velocities measured were 8 and 117 M per sec. The best curve relating velocity and diam. is a straight line. It holds equally well in all parts of the range of velocities. Curves drawn in accord with the hypothesis that the velocity varies as the square or square root of the diam. vary widely from the observed points. Comparative data relating internodal length to fiber diam. are plotted for nerve fibers from cats and kittens.