nerve impulse

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.

Origin:
1895–1900

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
nerve impulse
 
n
See also action potential the electrical wave transmitted along a nerve fibre, usually following stimulation of the nerve-cell body

Collins English Dictionary - Complete & Unabridged 10th Edition
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Dictionary.com's 21st Century Lexicon
Main Entry:  nerve impulse
Part of Speech:  n
Definition:  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
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American Heritage
Medical Dictionary

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Bones and nerve endings in the middle and inner parts of the ear then send a nerve impulse that travels to the brain.
Your retina converts light energy into a nerve impulse that is carried to the brain and interpreted.
Bone cells do not have an appropriate structure for nerve impulse conduction.
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