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nerve impulse

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia, Hutchinson 0.01 sec.
nerve impulse [′nərv ‚im‚pəls]
(neuroscience)
The transient physicochemical change in the membrane of a nerve fiber which sweeps rapidly along the fiber to its termination, where it causes excitation of other nerves, muscle, or gland cells, depending on the connections and functions of the nerve.


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The device detects nerve disturbances before physical symptoms appear by measuring nerve impulses as they flow through the muscles.
The design permits precise control over whether channels into neurons are opened or closed to the ions that propagate nerve impulses.
When there's a normal heavy layer of myelin around the axon, nerve impulses travel as fast as 120 meters per second.
 
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