A study of conduction velocity in nonmyelinated nerve fibers

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By treating a nonmyelinated nerve fiber as a continuous cable consisting of three distinct zones (Resting, transitional, and excited), the following mathematical expression was derived: (formula: see text) where v is the conduction velocity, d the diameter of the fiber, R the resistance of the membrane of unit area at the peak of excitation, rho the resistivity of the medium inside the fiber, and C the capacity of membrane per unit area. The validity of this expression was demonstrated by using squid giant nerve fibers intracellularly perfused with dilute salt solutions. The relationship between these results and previous theories and experiments on conduction velocity is discussed. © 1977, The Biophysical Society. All rights reserved.




Matsumoto, G., & Tasaki, I. (1977). A study of conduction velocity in nonmyelinated nerve fibers. Biophysical Journal, 20(1), 1–13. https://doi.org/10.1016/S0006-3495(77)85532-X

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