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nerve impulse |
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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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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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