Myogram determination from ECG signal

摘要

Systems and methods for measuring signals representative of muscle activity are provided. One method includes detecting an ECG signal through a plurality of electrodes. The ECG signal includes a plurality of ECG sample signals, and each ECG sample signal is a bipolar signal associated with two of the plurality of electrodes and includes a cardiac signal component and a myographic signal component. The method further includes filtering each of the ECG sample signals to remove at least a portion of the cardiac signal component and generate a combined myographic power signal for the two of the plurality of electrodes with which the ECG sample signal is associated. Each combined myographic power signal represents a myographic potential between the two electrodes. The method further includes calculating individual myographic power signals for each of the plurality of electrodes by applying the combined myographic power signals within a covariance matrix.

主权项

1. A method of measuring signals representative of muscle activity, the method comprising:
detecting, using a processing circuit, an electrocardiogram (ECG) signal through a plurality of electrodes, wherein the ECG signal comprises a plurality of ECG sample signals, wherein each ECG sample signal is a bipolar signal associated with two of the plurality of electrodes and comprises a cardiac signal component and a myographic signal component representative of muscle contractions relating to the muscle activity; filtering, using the processing circuit, each of the ECG sample signals to remove at least a portion of the cardiac signal component and generate a combined myographic power signal for the two of the plurality of electrodes with which the ECG sample signal is associated, wherein each combined myographic power signal represents a myographic potential between the two electrodes; and calculating, using the processing circuit, individual myographic power signals for each of the plurality of electrodes by applying the combined myographic power signals within a covariance matrix; wherein:
the method further comprises designating one of the plurality of electrodes to be a reference electrode and the others of the plurality of electrodes to be recording electrodes;detecting the ECG signal comprises detecting a first set of ECG sample signals comprising an ECG sample signal for each recording electrode with respect to the reference electrode;filtering each of the ECG sample signals comprises filtering each of the first set of ECG sample signals to generate a first set of combined myographic power signals, wherein the first set of combined myographic power signals comprises a combined myographic power signal for each recording electrode with respect to the reference electrode; andcalculating the individual myographic power signals comprises applying the first set of combined myographic power signals within the covariance matrix and calculating the individual myographic power signal for the reference electrode.