noun, Physiology.
a progressive wave of electric and chemical activity along a nerve fiber that stimulates or inhibits the action of a muscle, gland, or other nerve cell.
the electrical wave transmitted along a nerve fibre, usually following stimulation of the nerve-cell body See also action potential

a signal transmitted along a nerve fiber, starting with stimulation and then a wave of progressive alteration of electricity and becoming a record of sensation or instruction to act

nerve impulse n.
A wave of physical and chemical excitation that moves along a nerve fiber in response to a stimulus.

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