The Study of Responses of the Human Brain to Electromagnetic Field of Non-Thermal Intensity

Luk'yanova, S.; Karpikova, N. I.; Grigoryev, Yu. G.; Veselovskiy, I. A.

doi:10.18821/0016-9900-2017-96-9-848-854

Cited by 3 publications

(1 citation statement)

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“…Одной их существенных проблем современ ного дистанционного образования является чрез мерное использование различных электронных устройств в обучении: персональных планшетов, компьютеров, ноутбуков, электронных книг, мобильных телефонов, аудиоплееров, что пре вращает его из традиционного преимущественно в техногенное [16][17][18][19][20]. Тотальная цифровизация приводит к изменению психофизиологического статуса современного школьника, что может выражаться как в успешности обучения, так и провоцировать появление психологических расстройств у учащихся [21][22]. Настоящим исследованием выявлено увеличение в период изоляции числа обучающихся с высоким уров нем успешности (на 16,8 %) и значительное снижение числа неуспешных школьников -на 2,4 % (рис.…”

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Psychoemotional Status of Schoolchildren before and during Distance Learning at the Time of 2020 Coronavirus Lockdown

Макарова¹,

Зорина²,

Емельянова³

et al. 2021

PH&LE

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Introduction: During lockdown, a student is influenced by a combination of external factors including family environment, increased social and emotional stress, higher educational and computer load, and higher responsibility for doing homework, which inevitably changes his psychoemotional sphere and coping behavior. In order to study characteristics of psychoemotional and behavioral reactions of schoolchildren before and during 2020 COVID-19 lockdown, we conducted a questionnaire-based survey of 1,160 fifth to eleventh graders aged 11–18 in the city of Chelyabinsk. Results: We established a high level of reactive anxiety in 7.9 % and 9.9 % and a low level in 63.4 % and 59.4 % of schoolchildren before and during lockdown, respectively. A high level of personal anxiety was observed in 33.6 % and 42.6 % of children and a low level – in 19.8 % and 16.8 % of schoolchildren before and during lockdown, respectively. Higher levels of reactive and personal anxiety were more prevalent in girls than in boys. We noted a high and increased levels of aggression in 78.6 % and 80.5 % and very high and high levels of neuroticism in 44.6 % and 44.4 % of the respondents before and during school closure, respectively. A high level of emotional excitability and neurotization was observed in one third of the surveyed schoolchildren. The number of respondents with a high level of neurotization and emotional excitability rose by 7.5 % and 4.0 % during lockdown, respectively. The proportion of successful distance learning schoolchildren increased by 16.8 %. Conclusions: Lockdown contributed to the increase in the levels of anxiety, aggressiveness, and neuroticism in school-age adolescents. The number of respondents complaining of sleep disturbance, visual impairment and headaches became 2.7, 1.1, and 1.1 times higher during lockdown. We revealed significant differences in sleep disorders, headaches, dizziness, complaints of vision impairment, fatigue, and irritability between successful and unsuccessful schoolchildren (p < 0.05).

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Psychoemotional Status of Schoolchildren before and during Distance Learning at the Time of 2020 Coronavirus Lockdown

Макарова¹,

Зорина²,

Емельянова³

et al. 2021

PH&LE

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Peculiarities of Student´s Psychological State Under the Adverse Influence of Intraschool Factors

Макарова¹,

Зорина²

2019

PH&LE

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The paper presents the results of monitoring of intraschool factors and gives a hygienic assessment of the sanitary and epidemiological wellbeing of schools and the organization of the educational process in schools of Chelyabinsk. It was established that 56.4 % of establishments with satisfactory conditions of stay and education belong to the second group and 0.6 % of schools belong to the third group of sanitary and epidemiological wellbeing. In the study of class schedules, non-compliance with hygienic standards was found in 26.3 % of cases. Subjects of high difficulty level are put the first on schedule in 15.0 % of cases and during 5–8 lessons in 10.0 % of cases. We assessed the anxiety levels of 5–11th grade students (total 2 032 schoolchildren). High levels of reactive anxiety were found among 35.7 % of students and personal anxiety among 37.0 % of schoolchildren respectively. The most significant causes of psychological discomfort in educational establishments are the conditions of a new digital intraschool environment and educational overload, which can manifest themselves in a high anxiety level among students, which necessitates the development of hygienic principles for the formation of a health-saving environment.

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Fatty acids composition in blood plasma and erythrocyte membranes in operators of the Vessel Traffic Control Center

Кушнерова

Rakhmanin

Momot

et al. 2022

Hygiene and Sanitation

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Introduction. The quantitative composition of fatty acids in blood plasma and erythrocyte membranes was studied in operators at the Vladivostok Vessel Traffic Control Center (VTCC), who during working hours are subject to the influence of electromagnetic fields (EMF) (radars and navigation devices, communication equipment), high sensory loads (perception of signals on the computer screen and their assessment). Materials and methods. A survey of 2 groups of male volunteers at the age of 35-45 years was carried out. Group 1 (control) included ten healthy donors of comparable age; Group 2 included 10 operators working at the Vessel Traffic Center, who gave informed consent to participate when undergoing a routine medical examination. Results. The effect of EMF on the body of operators was shown to be accompanied by a pronounced pattern of changes in adaptive reactions typical for exposure to acute stress. This was manifested in a decrease in the lymphocytes and eosinophils content when compared to the control values with a simultaneous increase in the intoxication index. Based on the study of the quantitative characteristics of fatty acids in blood plasma and erythrocyte membranes it was noted an increase in saturated fatty acids (myristic, palmitic, stearic) and a decrease in polyunsaturated fatty acids (arachidonic, eicosapentaenoic and docosahexaenoic). The change in the molecular types of phospholipids was noted to decrease in the content of polyunsaturated fatty acids of the n-6 and n-3 families as a part of phosphatidylcholine and phosphatidylethanolamine. Palmitoyl- and stearoyl-containing phospholipids are formed and arachidonoyl-, eicosapentanoyl- and docosahexanoyl-containing components of biomembranes decline. The composition of phospholipids includes saturated fatty acids (myristic, palmitic and stearic) and fatty acids of the n-9 family (monoenic fatty acids). Calculation of the ratio of fatty acids 20:4 n-6/18:2 n-6 showed its significant decrease in total lipids of blood plasma and erythrocyte membranes, which characterizes Δ6 and Δ5 desaturase and elongase, which leads to a lack of arachidonic and eicosapentaenoic fatty acids. Limitations. Metabolic reactions (subject), 20 examined (quantitative parameter), pilot operators (qualitative indicator), standards of the Helsinki Declaration of 1964 (moral and cultural). Conclusion. The impact of EMF on the body of operators of the VTCC in Vladivostok is accompanied by the formation of a stress reaction. Based on the research of the quantitative characteristics of fatty acids in blood plasma and erythrocyte membranes it was noted a violation of metabolic reactions in the exchange of fatty acids. This led to the appearance of new molecular types of phospholipids due to disturbances in the metabolic transformations of fatty acids.

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The Study of Responses of the Human Brain to Electromagnetic Field of Non-Thermal Intensity

Cited by 3 publications

References 1 publication

Psychoemotional Status of Schoolchildren before and during Distance Learning at the Time of 2020 Coronavirus Lockdown

Psychoemotional Status of Schoolchildren before and during Distance Learning at the Time of 2020 Coronavirus Lockdown

Peculiarities of Student´s Psychological State Under the Adverse Influence of Intraschool Factors

Fatty acids composition in blood plasma and erythrocyte membranes in operators of the Vessel Traffic Control Center

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