Sexual Peculiarities of Brain Activity in Northern Children 9–10 Years

Dzhos Yu.S., Bagretsova T.V., Ikonnikova I.V.

Institute of Medical and Biological Research Northern (Arctic) Federal University, Arkhangelsk, Russian Federation

Abstract. A study of sex differences of brain activity in northern children 9-10 years in different seasons. The greatest changes between boys and girls identified on spectral characteristics of EEG during the autumn-winter period. The total power delta rhythm prevalence in boys in autumn and the total power of theta rhythm increase in girls in winter. The findings suggest that gender differences qualitative morphological and functional maturation of the central nervous system due to adaptation to extreme environmental conditions.

Keywords: сhildren, North, bioelectric brain activity, sex differences

REFERENCES
1. Soroko S. I., Butykh E. A., Bekshaev S. S., Sidorenko G. V., Sergeeva E. G., Khovanskykh A. E., Kormilitsyn B. N., Moralev S. N., Yagodina O. V., Dobrodeeva L. K., Maximova I. A., Protasova O. V. Features of formation of the system of brain activity and autonomic functions in children in the European North (Problem article). Rossiiskii fiziologicheskii jurnal im. I. M. Sechenova. [Russian Journal of physiological named after I. M. Sechenov]. 2006, 92 (8), pp. 905-929. [in Russian]
2. Kubasov R. V., Demin D. B., Tarasova E. V., Tkachev A. V. Formation of the system pituitary – thyroid – gonads in boys during puberty living in Arkhangelsk. Rossiiskii fiziologicheskii jurnal imeni I. M. Sechenova [Russian journal of physiology (formely I.M. Sechenov Physiological Journal)]. 2005, no. 4, pp. 400. [in Russian].
3. Gudkov A. B., Popova O. N., Nebuchennyh A. A. Novosely na Evropeyskom Severe. Fiziologo-gigienicheskie aspekty [Settlers in the European North. Physiological and hygienic aspects]. Arkhangelsk, 2012. 285 p. 
4. Sergeeva E. G. Vozrastnye osobennosti funktsional'nogo razvitiya mozga и shkol'nikov, prozhivayushchikh v usloviyakh Evropeiskogo Severa (avtoref. kand. dis.) [Age features of functional brain development in schoolchildren living in the European North. Author’s Abstract of Cand. Diss.]. Saint Petersburg, 2009, 21 p.
5. Dzhos Y. S., Gribanov A. V. Seasonal changes of brain bioelectrical activity in younger schoolchildren northerners residing in the north. Vestnik Ural'skoy meditsinskoy akademicheskoy nauki [Bulletin of Ural Medical Akademic Science]. 2014, 2 (48), pp. 25-29. [in Russian].
6. Rozhkov V. P., Bekshaev S. S., Soroko S. I. Seasonal adjustment and hemodynamic brain activity in children and adolescents of the European North. Ul'janovskij mediko-biologicheskij zhurnal [Ulyanovsk Medico-biological Journal]. 2012, 3, pp. 104-115. [in Russian].

Authors
Dzhos Yuliya S., u.jos@narfu.ru
Institute of Medical and Biological Research Northern (Arctic) Federal University, Arkhangelsk, Russia
PhD in Medicine, Associate Professor, Deputy director of science
Russian Federation, 163045 g. Arhangel'sk, proezd Badigina, d.3

Bagretsova Tatyana V., t.bagretsova@narfu.ru
Leading engineer of a Department of support of scientific research work

Ikonnikova Irina V., i.ikonnikova@narfu.ru
Leading engineer of a Department of support of scientific research work