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electromyogram

an electromyogram (emg) is a test that measures the electrical activity of your muscles. it can determine whether muscle weakness or paralysis is due to a nerve problem or to a problem with the muscle itself.

during an electromyogram, a thin needle is placed in a muscle to measure its electrical activity at rest and during use. the needle is attached to a machine with a viewing screen that displays electrical activity in the muscles as waves on the screen.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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