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What is the difference between needle EMG and surface EMG?

April 26, 2017difference EMG needle

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What is the difference between needle EMG and surface EMG?

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Needle EMG is performed with a needle electrode penetrated through the skin and directly into the muscle. This provides information about a single muscle fiber rather than information on the overall condition of a muscle. Surface EMG technology allows information regarding the overall muscle function and condition to be collected from the surface of the skin. This process is non-invasive and non-painful to the patient.