the speed with which nerve impulses progress along the axon of a neuron. Gauges by various methods dictate that axons range greatly in conduction velocity, from 80-120 m/s for big, myelinated A fibers to 0.5-2 m/s for tinier, unmyelinated c fibers.
VELOCITY OF CONDUCTION: "Velocity of conduction was initially gauged by Hermann von Helmholtz, a German physiologist."