Functional activity of the brain among elderly women with different autonomic tones in the Arctic zone of the Russian Federation

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Abstract

AIM: To identify the distinctive features of brain activity based on the distribution of DC-potential levels among elderly women across different autonomic tones in the Russian Arctic.

MATERIALS AND METHODS: In total, 121 60–74 years old women permanently living in Arctic Russia participated in a cross-sectional study. Differences in the indicators of DC-potential levels were measured in three groups of elderly women with different levels of autonomic tone, namely, in vagotonics, normotonics and sympathotonics. Registration of the DC-potential levels of the brain was carried out using a 12-channel “Neuro-KM” diagnostic equipment. The assessment of the autonomic regulation of the heart rate was carried out using the “VNS-spectrum” equipment.

RESULTS: Greater total and average indicators of DC-potential distribution were observed in the sympathotonic group compared with the two other groups. For all monopolar leads, a clear trend towards an increase in neuroenergometabolism of the brain in elderly women with predominant activity of the sympathetic part of the ANS was observed. The dome-shaped principle was violated in both sympathotonics and vagotonics. In the group of normotonics and vagotonics, the leading factors were the functional activity of the central and frontal regions of the brain, while in the group of sympathotonics, the greatest proportion was determined by the factors regulating brain activity of the right temporal and frontal regions.

CONCLUSION: The study of the functional activity of the brain in elderly women with different autonomic tones demonstrates the presence of specific changes in the distribution of values of the constant potential level, which may indicate some change in the mechanisms characterizing the state of cerebral energy exchange. The most pronounced changes were observed in women with the sympathotonic type of ANS, which may characterize the processes of incomplete adaptation.

About the authors

Anatoliy V. Gribanov

Northern (Arctic) Federal University named after M.V. Lomonosov

Author for correspondence.
Email: a.gribanov@narfu.ru
ORCID iD: 0000-0002-4714-6408
SPIN-code: 2788-8167

MD, Dr. Sci. (Med.), professor

Russian Federation, Arkhangelsk

Taisiia P. Shiryaeva

Northern (Arctic) Federal University named after M.V. Lomonosov

Email: t.shiryaeva@narfu.ru
ORCID iD: 0000-0001-9458-3224
SPIN-code: 6330-0832

Cand. Sci. (Biol.), associate professor

Russian Federation, Arkhangelsk

Irina L. Fateeva

Novodvinsk Orphanage for Children with Intellectual Disabilities

Email: irana1307@mail.ru
ORCID iD: 0000-0003-4506-5871
SPIN-code: 1934-8901

MD, defectologist

Russian Federation, Novodvinsk

Denis M. Fedotov

Northern (Arctic) Federal University named after M.V. Lomonosov; Northern State Medical University

Email: doctorpro@yandex.ru
ORCID iD: 0000-0002-4067-8364
SPIN-code: 1209-7657

MD, Cand. Sci. (Med.), associate professor

Russian Federation, Arkhangelsk; Arkhangelsk

Oksana S. Preminina

Northern (Arctic) Federal University named after M.V. Lomonosov

Email: o.preminina@narfu.ru
ORCID iD: 0000-0001-9664-8773
SPIN-code: 4975-5736

Cand. Sci. (Biol.), associate professor

Russian Federation, Arkhangelsk

Tatiana V. Anoshina

Northern (Arctic) Federal University named after M.V. Lomonosov

Email: t.anoshina@narfu.ru
ORCID iD: 0000-0002-4882-7512
SPIN-code: 8580-6240

associate professor

Russian Federation, Arkhangelsk

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Supplementary files

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2. Fig. 1. Distribution of the DC-potential level in elderly women with different autonomic tone: * statistically significant differences between sympathotonics and normotonics; + statistically significant differences between sympathotonics and vagotonics.

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3. Fig. 2. Distribution of the DC-potential level of brain in normotonics.

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4. Fig. 3. Distribution of the DC-potential level of brain in sympathotonics.

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5. Fig. 4. Distribution of the DC-potential level of brain in vagotonics.

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