EEG correlates of geno-phenotypical features of the brain development in children of the native and newcomers' population of the Russian North-East

• Published in: Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova Vol. 98; no. 1; p. 3
• Main Authors: Soroko, S I, Bekshaev, S S, Rozhkov, V P
• Format: Journal Article
• Language: Russian
• Published: Russia (Federation) 01-01-2012
• Subjects: Adaptation, Physiological; Adolescent; Age Factors; Brain - growth & development; Brain Mapping; Central Nervous System - growth & development; Child; Electroencephalography - methods; Female; Genotype; Humans; Male; Phenotype; Population Groups; Russia; Russia
• ISSN: 0869-8139

Traditional and original methods of EEG analysis were used to study the brain electrical activity maturation in 156 children and adolescents from 7 to 17 years old who represented the native (Koryaks and Evenks) and newcomers' populations living in severe climatic and geographic conditions of the Russian North-East. New data revealing age-, sex- and ethnic-related features in quantitative EEG parameters are presented. Markers are obtained that characterize alterations in the structure of interaction between different EEG rhythms. The results demonstrate age-dependent transformation of this structure separated in time for both different cortical areas and different EEG frequency bands. These alterations show time lag from 2 to 3 years in children of native population compared to the newcomers. The revealed differences are assumed to reflect geno-phenotypical features of morpho-functional CNS development in children of the native and newcomers' population that depend on strong adaptation tension for extreme environmental conditions.