Measuring Electrical Activity EMG biofeedback unit receives small amounts of electrical energy generated during muscle contraction (via the electrodes) EMG biofeedback unit receives small amounts of electrical energy generated during muscle contraction (via the electrodes) Separates or filters electrical energy from other extraneous electrical activity on skin Separates or filters electrical energy from other extraneous electrical activity on skin Amplifies the EMG electrical energy and converts it to some type of information which has meaning to the patient Amplifies the EMG electrical energy and converts it to some type of information which has meaning to the patient Meter, auditory signal, light display Meter, auditory signal, light display
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