UDC

612.82

DOI

10.17238/issn2542-1298.2020.8.1.23

Authors

Ol’ga N. Kottsova* ORCID: 0000-0002-7004-6368
Natal’ya Yu. Anikina** ORCID: 0000-0002-8115-0291
Anatoliy V. Gribanov*/** ORCID: 0000-0002-4714-6408
*Northern (Arctic) Federal University named after M.V. Lomonosov (Arkhangelsk, Russian Federation)
**Northern State Medical University (Arkhangelsk, Russian Federation)
Corresponding author: Anatoliy Gribanov, address: proezd Badigina 3, Arkhangelsk, 163000, Russian Federation; e-mail: a.gribanov@narfu.ru

Abstract

This research aimed to establish the characteristics of changes in cerebral energy metabolism in young people born and living in the Arctic zone of the Russian Federation with different types of hemispheric asymmetry in contrasting seasons with disturbed photoperiods (in December and June) according to the distribution of DC potential level. DC potential level was recorded and analysed using the 12-channel Neuro-KM hardware and software complex by mapping the monopolar values of DC potential and calculating their gradients. The obtained results were compared with the average standard values. It was established that the most pronounced changes in energy exchange processes occur at maximum intensity of daylight in young people with left hemisphere dominance. In particular, their energy metabolism intensified with longer daylight hours and, instead of “domelike” distribution, energy processes were activated in the frontal and occipital regions, with centres of visual and sensory sensitivity being predominant. On the whole, in the summer period, the structure of interconnections between the parts of the brain becomes more rigid, compared with the winter period, which can contribute to the development of maladaptive reactions, i.e. the functional organization of cerebral energy metabolism undergoes significant changes. The least restructuring of energy exchange processes was observed in persons with right hemisphere dominance. The results of the factor analysis indicate that differences in the levels of natural light during the year produce no effect on the redistribution of energy exchange processes over the cerebral cortex in people with right hemisphere dominance.
For citation: Kottsova O.N., Anikina N.Yu., Gribanov A.V. Interhemispheric asymmetry and Cerebral Energy Metabolism in Young people Living in the Arctic Zone of the Russian Federation During the seasons with Disturbed photoperiods. Journal of Medical and Biological Research, 2020, vol. 8, no. 1, pp. 23–32. DOI: 10.17238/issn2542-1298.2020.8.1.23

Keywords

Arctic zone of the Russian Federation, photoperiodism, able-bodied population, DC potential level, cerebral energy exchange, interhemispheric asymmetry

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