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An '''electrical impulse''' is a surge of electricity, that is, a large flow of electrons or charged particles occurring seemingly spontaneously after experiencing a stimuli.
Several examples of electrical impulses include:
* Within the heart, an electrical impulse is used to cause beating, and these can be imitated in a pacemaker. Similarly a defibrillator uses a sudden electrical impulse to jump start the heart
* The human nervous system works by a series of electrical impulses to and from the brain that stimulate muscles and other organs
==References==
* [http://www.ucsfhealth.org/childrens/medical_services/heart_center/arrhythmia/heartElectrical.html Heart Care | The Heart's Electrical System]
* [http://www.sfn.org/index.cfm?pagename=brainBriefings_unlockingLockedInSyndrome Society for Neuroscience | Unlocking Locked in Syndrome]
==See Also==
* [[Electricity]]
[[Category:Science]]