Functional Copula Graphical Regression Model for Analysing Brain-Body Rhythm

In physiology, organ functions can be modelled as networks with individual regulatory mechanisms, forming a broader system through continuous interactions. The system not only interacts with itself, but can also respond to outside impulses. The paper proposes a functional graphical regression model to describe interconnected brain activities partly in response to other organs. The analysis focuses on the conditional independence structure of brain waves given the RR interval of the electrocardiographic waveform, the respiration amplitude and the blood volume pulse.