EEG Correlates of Genophenotypic Characteristics of Brain Development in Children of the Aboriginal and Settler Populations in Northeast Russia

• Published in: Neuroscience and behavioral physiology Vol. 43; no. 7; pp. 783 - 798
• Main Authors: Soroko, S. I., Bekshaev, S. S., Rozhkov, V. P.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2013; Springer Nature B.V
• Subjects: Adaptation; Behavioral Sciences; Biochemistry; Biomedical and Life Sciences; Biomedicine; Native peoples; Nervous system; Neurobiology; Neurosciences; Physiology; Teenagers; Russia; adaptation; development; nervous system; peoples of the North; children; EEG
• ISSN: 0097-0549; 1573-899X
• DOI: 10.1007/s11055-013-9809-x

Traditional and original analytical methods were used to study the developmental characteristics of EEG dynamics in 156 children and adolescents aged 7–17 years of the aboriginal (Koryaks, Evens) and offspring of settler (Europeoid) populations living in the severe climatogeographical conditions of the northeast of the Russian Federation. New data were obtained on the age- and gender-related and ethnic characteristics of the formation of brain bioelectrical activity. EEG markers were identified characterizing changes in the structure of interactions between EEG rhythms. Developmental rearrangements of this structure were found to occur at different times for different cortical areas and frequency ranges, with onset 2–3 years later in children of the aboriginal population than in offspring of the settler population. It is suggested that these differences reflect the genophenotypic characteristics of the morphofunctional development of the CNS in children of the aboriginal and settler populations on the background of increased adaptive pressure in extreme environmental conditions.