N.V. Zvyagina - Ph.D. (Biol.), Associate Professor, Head of the Department of Physiology and Morphology Human, Institute of Natural Science and Technologies, Northern (Arctic) Federal University named after M.V. Lomonosov (Archangelsk). E-mail: biolzv@yandex.ru D.S. Potutkin - Post-graduate Student, Junior Research Scientist, Research Laboratory of Neurophysiology and Higher Nervous Activity, Institute of Medical and Biological Research, Northern (Arctic) Federal University named after M.V. Lomonosov (Archangelsk). E-mail: d.potutkin@narfu.ru L.V. Sokolova - D.Sc. (Biol.), Professor, Department of Physiology and Morphology Human, Institute of Natural Science and Technologies, Northern (Arctic) Federal University named after M.V. Lomonosov (Archangelsk). E-mail: sluida@yandex.ru