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I normally put just 2 electrodes on for chin EMG, what is the 3rd electrode for?

April 26, 2017chin Electrode electrodes EMG

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I normally put just 2 electrodes on for chin EMG, what is the 3rd electrode for?

1 Answer

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A. Many labs put an extra chin electrode on the patient for backup purposes. If an electrode stops working, you can just re-reference to the 3rd electrode from the control room without going into the patient’s room.