Gridnev Vladimir I. RussiaSaratovSaratov State Medical University named after V. I. Razumovsky, Bolshaya Kazachia st., 112 Saratov, 410012 Russiagridnev@cardio-it.ru Author's articles Investigation of Delay Time in Interaction between the Regulatory Circuits in the Cardiovascular System of Healthy Humans Using Modeling of Phase Dynamics