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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">r-n-j</journal-id><journal-title-group><journal-title xml:lang="ru">Российский неврологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Russian neurological journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2658-7947</issn><issn pub-type="epub">2686-7192</issn><publisher><publisher-name>МИА</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30629/2658-7947-2020-25-6-12-18</article-id><article-id custom-type="elpub" pub-id-type="custom">r-n-j-127</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИССЛЕДОВАНИЯ И КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL RESEARCHES AND CASE REPORTS</subject></subj-group></article-categories><title-group><article-title>Высокочастотная электрическая активность мозга у больных c полушарным ишемическим инсультом в сопоставлении с когнитивными функциями</article-title><trans-title-group xml:lang="en"><trans-title>High-frequency electrical activity of the brain in patients with hemispheric ischemic stroke in combination with cognitive functions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8469-1635</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новикова</surname><given-names>Л. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikova</surname><given-names>L. B.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">novicova@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8552-6233</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарапова</surname><given-names>К. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharapova</surname><given-names>K. M.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">sharapovakarina.2020@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7787-000X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриева</surname><given-names>О. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitrieva</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">dmitri.ufa@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Башкирский государственный медицинский университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashkir State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2021</year></pub-date><volume>25</volume><issue>6</issue><fpage>12</fpage><lpage>18</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Новикова Л.Б., Шарапова К.М., Дмитриева О.Э., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Новикова Л.Б., Шарапова К.М., Дмитриева О.Э.</copyright-holder><copyright-holder xml:lang="en">Novikova L.B., Sharapova K.M., Dmitrieva O.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.r-n-j.com/jour/article/view/127">https://www.r-n-j.com/jour/article/view/127</self-uri><abstract><p>Резюме. Математический анализ электроэнцефалографии (ЭЭГ) дает информацию о функциональном состоянии головного мозга, расширяет понимание механизмов взаимодействия различных областей мозга, увеличивает возможности диагностики и позволяет выдвинуть новые задачи в области изучения деятельности мозга. Цель. Оценить изменения гамма-ритма у больных с полушарным ишемическим инсультом в острейшем и остром периодах в сопоставлении с когнитивными и тревожно-депрессивными нарушениями. Материал и методы. В исследование были включены 32 больных с полушарным ишемическим инсультом. Всем пациентам осуществлялись комплексное клинико-неврологическое, инструментальные и лабораторные исследования. Регистрация ЭЭГ проводилась в 1-е и 21-е сутки заболевания продолжительностью 20 минут. Методом математического анализа оценивали спектры мощности и пиковую частоту гамма-ритма фоновой ЭЭГ. Результаты. Установлено, что когнитивные и тревожно-депрессивные расстройства выявляются уже в острейшем и остром периодах ишемического инсульта. При математическом анализе ЭЭГ у больных с полушарным ишемическим инсультом отмечаются статистически значимые корреляции между индексом гамма-ритма и когнитивными, тревожно-депрессивными расстройствами во фронтальных, центрально-височных областях. Заключение. В комплекс обследования больных с полушарным ишемическим инсультом целесообразно включать, помимо клинического и нейропсихологического исследования, математический анализ ЭЭГ.</p></abstract><trans-abstract xml:lang="en"><p>Abstract. The mathematical analysis of electroencephalography (EEG) provides information about the functional state of the brain, expands the understanding of the mechanisms of interaction between different areas of the brain, increases the possibilities of diagnostics and allows to put forward new tasks in the field of studying brain activity.  Aim. To assess changes in the gamma-rhythm in patients with hemispheric ischemic stroke in the most acute and acute periods in comparison with cognitive and anxiety-depressive disorders. Material and methods. The study included 32 patients with hemispheric ischemic stroke. All patients underwent complex clinical, neurological, instrumental and laboratory studies. The study and recording of the EEG was carried out on the 1st and 21st days of the disease, lasting 20 minutes. The method of mathematical analysis was used to estimate the power spectra and the peak frequency of the gamma — rhythm of the background EEG. Results. As a result of the study, it was found that cognitive and anxiety-depressive disorders are detected already in the most acute and acute periods of ischemic stroke. In the mathematical analysis of the EEG statistically significant correlations between the gamma — rhythm index and cognitive, anxiety-depressive disorders in the frontal, central temporal areas are noted. Conclusion. The complex of examination of patients should include, in addition to clinical and neuropsychological research, mathematical analysis of EEG data.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ишемический инсульт</kwd><kwd>математический анализ электроэнцефалограммы</kwd><kwd>гамма-активность</kwd><kwd>когнитивные функции</kwd><kwd>тревожно-депрессивные нарушения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ischemic stroke</kwd><kwd>mathematical analysis of electroencephalography</kwd><kwd>gamma-activity</kwd><kwd>cognitive functions</kwd><kwd>anxiety-depressive disorders</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Данилова Н.Н., Астафьев С.В. Внимание человека как специфическая связь ритмов ЭЭГ с волновыми модуляторами сердечного ритма. 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