title: [The Ability to Successfully Perform Different Kinds of Cognitive Activity Is Reflected in the Topological Features of Intracortical Interactions (Sex Differences in Boys and Girls Aged 5-6 Years)].
abstract: We studied the correlation of intellectual development according to The Wechsler Intelligence Scale for Children (WISC test) with the spatial organization of resting EEG in 52 children aged 5-6 years. It was found that the patterns of interregional interactions of different parts of the cortex which correspond with the best performance in the subtests in boys (n = 23) and girls (n = 29) have significant topological differences. In girls, successful subtest performance positively correlated to a greater extent with interhemispheric interactions; in boys--long longitudinal rostral-caudal interactions between various regions of the cortex. The results showed that there are important gender differences in the spatial organization of brain activity associated with the performance of different cognitive activities in preschool children. The successful performance of various subtests by boys required considerable variability in the organization of spatial patterns of interregional interactions; on the contrary, the spatial structure of these patterns in girls was relatively invariable. Obviously, for the successful performance of various cognitive activities at this age in boys, the cortex need to form highly specialized organization of intracortical interactions, while in girls the brain uses relatively similar reorganization of interactions. The data suggest that 5-6-year-old boys and girls use different cognitive strategies when performing the same subtests of the WISC test.
authors.forename: E A
authors.initials: EA
authors.lastname: Panasevich
authors.forename: M N
authors.initials: MN
authors.lastname: Tsitseroshin
mesh_terms: D002540:Cerebral Cortex / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D003071:Cognition / Q000502:physiology*; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D012727:Sex Characteristics