Why Do Nerve Signals Travel in Only One Direction Along an Axon?
A nerve signal moves one way along an axon because the membrane it just crossed briefly can’t fire again. Learn how the refractory period sets the direction.
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What Is an Action Potential? Brain Signals Explained
An action potential is a brief, rapid electrical signal that travels along a neuron’s axon, the long fiber that carries signals away from the cell body. It is the main way neurons send information over long distances, to other neurons, to muscles, and to glands. Every movement, thought, sensation, and memory depends on action potentials….