APPARATUS AND METHOD FOR MEASURING ELECTROPHYSIOLOGICAL SIGNALS USING DRY ELECTRODES

摘要

A system and method for determining at least one patient parameter using electrophysiological signals from the patient is provided. The system includes a housing and a reference transmitter array. The reference transmitter array emits at least one reference signal having a predetermined frequency content. The reference transmitter is retained in a predetermined position by the housing on a first side of the patient's body. At least one sensor senses a composite signal including at least one signal generated by the patient's body and a modified reference signal, the modified reference signal being the reference signal received on the second side of the patient's body and including noise, the sensor being retained in a predetermined position by said housing on a second side of the patient's body opposite the first side. A signal processor is electrically coupled to the reference transmitter array and the at least one sensor. The signal processor controls the reference transmitter array to emit the at least one reference signal and receives the composite signal from the at least one sensor and filters the composite signal to remove the reference signal and noise therefrom to produce a first signal of interest for use in determining a first patient parameter.