Electromyography is a recording of voltage on the skin surface, which is derived from the contraction of skeletal muscles under the skin.

Name: Electromyography is a recording of voltage on the skin surface, which is derived from the contraction of skeletal muscles under the skin.
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Electromyography (EMG) measures the electrical activity produced by skeletal muscles during contraction, and this activity is recorded as voltage changes on the skin surface above the muscles being examined.

Electromyography Is a Recording of Voltage on the Skin Surface