Method of estimation of synchronization strength between low-frequency oscillations in heart rate variability and photoplethysmographic waveform variability

Abstract

Introduction Complexity of cardiovascular system (CVS) and its regulatory mechanism draws high researcher’s interest to this system. However, many problems are yet to be solved. It is well known that many interacting oscillation processes of different origin are present in CVS [1]. Many approaches have been utilized to study regulatory mechanisms of CVS, such as analysis of