B.V. Zhuravlev - Dr.Sc. (Med.), Professor, Head of Laboratory, P.K. Anokhin Institute of Normal Physiology (Moscow). E-mail: b.zhuravlev@nphys.ru E.P. Murtazina - Ph.D. (Med.), Leading Researcher, P.K. Anochin Institute of Normal Physiology (Moscow). E-mail: e.murtazina@nphys.ru