Seasonal Changes of Brain Bioelectrical Activity in Younger Schoolchildren Northerners Residing in the North

Dzhos Y.S., Gribanov A.V.

Institute of Medical and Biological Research Northern (Arctic) Federal University named after M.V. Lomonosov, Arkhangelsk, Russian Federation

Abstract. A study of the spectral characteristics of the electroencephalogram (EEG) in primary school children during the increasing, maximum, decreasing the minimum duration of daylight. The paper presents the amplitude and frequency dynamics of basic EEG rhythms, their interrelation with periods of natural light. Revealed the dominance of low-frequency delta- and thetarhythms during periods of increasing and decreasing daylight in all parts of the brain. Also was an increase in amplitude and spectral characteristics of alpha- and beta1-rhythm in the spring. Revealed that adaptive tuning of brain activity occur in contrasting seasons. Periods of maximum and minimum daylight, can be considered more favorable for the functioning of the central nervous system and the development of higher mental functions of children.

Key words: children, north, electroencephalography, daylight.

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Authors:
Dzhos Julija S. u.jos@narfu.ru
Institute of Medical and Biological Research Northern (Arctic) Federal University named after M. V. Lomonosov,
Arkhangelsk PhD in Medicine, Associate Professor, Deputy director of science

Gribanov Anatolij V. a.gribanov@narfu.ru
Institute of Medical and Biological Research Northern (Arctic) Federal University named after M. V. Lomonosov,
Arkhangelsk Doctor of Medicine, Professor, Director of the Institute
Russian Federation,163045 g. Arhangel'sk, proezd Badigina, d.3