Optical simulation and dynamic skin model to disentangle the cardiovascular behaviors in photoplethysmographic signal

Abstract

Photoplethysmography (PPG) is a high-speed optical measurement technique that resolves fast physiological phenomena and offers promising applications in the medical field. In order to have a better understanding of the cardiovascular dynamics through the PPG signal, we propose a comprehensive multilayered and optical biophysical skin model from the wrist that is able to simulate some characteristic physiological properties and the complex cardiovascular dynamics. Thanks to this dynamic optical model, we are able to identify and disentangle the microvascular, arterial and venous contributions retrieved from the PPG signal signature.