Patent ID: 8882676
Filing Date: 2014-11-11
Classification: A61B

Abstract:
1. A computer-implemented method for calculating a Respiratory Sinus Arrhythmia (RSA) metric for use in biofeedback systems, comprising: (a) sampling a subject's heart beat during a window of time by a sensor to obtain heart beat sensor data; (b) transmitting, by the sensor, the heart beat sensor data corresponding to each sample during the window to a computing device; (c) calculating, by the computing device, inter beat intervals from the heart beat sensor data; (d) determining, by the computing device, an all-pole filter model that best fits the inter beat intervals; (e) calculating, by the computing device, positions of filter model poles; (f) identifying, by the computing device, the pole with the largest modulus within a pre-specified sector of a unit circle; and (g) calculating, by the computing device, an RSA metric,