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https://doi.org/10.14300/mnnc.2019.14052

Peculiarities of spatial -time organization of bioelectric activity of pregnant women brain with endocrine pathology

[Neurology]
Valentina Vasil’eva; Tatiana Botasheva; Anna Khloponina; Angelina Shakhanova; Elena Zheleznyakova; Oleg Zavodnov;

In this study, the indicators of the spatial-time organization of the electro-encephalo-gramms (EEG) in the dynamics of gestation in women with endocrine pathology were studied. 174 pregnant women underwent EEG registration and analysis in the frontal, temporal, central, parietal, occipital cortical areas in the main frequency bands. Mean values of EEG power and coherence spectra were calculated, as well as interhemispheric asymmetry coefficients for these parameters. In the first trimester of pregnancy in women with the syndrome of hyperandrogenism, an increase in the power of spectra in the theta and beta bands and an increase in alpha coherence in the anterior and central regions of the cortex were noted, with no significant interhemispheric differences. At the same time, the coherence of the EEG in the alpha-rhythm range in the central and temporal zones of the left hemisphere was specific for the pregnant women from the «norm» group, with the increase in the beta-frequency power in these regions, which in our opinion indicates the formation of a dominant of pregnancy, i.e., the formation of a stable and stationary source of excitation in these zones of the cortex. The results show that patients with a history of hyperandrogenic syndrome, in the early stages of gestation, are at risk for miscarriage, which is reflected in the parameters of brain bioelectrical activity.

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Keywords: pregnancy, endocrine pathology, electroencephalogram, asymmetry, dominant