P.E. Umriukhin - Dr.Sc. (Med.), Professor, Sechenov First Moscow State Medical University; Senior Research Scientist, P.K. Anokhin Institute of Normal Physiology, Moscow, Russia. Е-mail: pavelum@mail.ru O.S. Grigorchuk - Junior Research Scientist, P.K. Anokhin Institute of Normal Physiology; Assistant, Sechenov First Moscow State Medical University, Moscow, Russia. Е-mail: prosto_tak05@mail.ru M.E. Zharova - Student, Sechenov First Moscow State Medical University, Moscow, Russia. Е-mail: zharowa.mariya@yandex.ru