Место работы автора, адрес/электронная почта: Северо-Восточный федеральный университет им. М. К. Аммосова, Медицинский институт ; 677013, г. Якутск, ул. Ойунского, 27 ; e-mail: gk.stepanova@s-vfu.ru, g_k_step@mail.ru ; https://www.s-vfu.ru/
Ученая степень, ученое звание: д-р мед. наук
Область научных интересов: Физиология человека, адаптация человека к условиям Севера, вариабельность сердечного ритма, энцефалографические ритмы у практически здоровых студентов-якутов
ID Автора: SPIN-код: 5466-7349, РИНЦ AuthorID: 174312
Количество страниц: 8 с.
The success of students’ adaptation to the educational process at a university is largely determined by the characteristics of the lateral specialization of the cerebral hemispheres. At the same time, variability in the functional interaction of the hemispheres is possible to ensure an optimal level of adaptation in changing conditions. The dynamics of functional brain asymmetry (FBA) was studied in junior medical students in different years (2015-2022). The examined 194 Yakut students of 1st-2nd years of the Institute of Medicine, NEFU, 18-23 years old, were divided into 4 groups by year and subgroups: those writing with their left hand and those writing with their right hand. The profile of the lateral phenotype of the brain and the degree of asymmetry were determined using asymmetry coefficients (Ka). To estimate Ka, the mean and quartile values were found. When comparing interannual Ka values, the nonparametric Wilcoxon rank method was used. Over 7 years, an increase in right-handedness and right-footedness in students was revealed, with right-handedness by 25 %, and right-footedness by 12.3 %. Along with the increase in right-handedness and right-footedness, the average Ka increased, and its quartile values shifted significantly to the right. By 2022, the proportion of right-eyed people among right-handed people decreased by 20 % and the average Ka decreased to -0.05. There was a shift in the first quartile of Ka to -1, which corresponds to the symmetry of the eyes. In left-handed people, over 7 years left-handedness decreased by 22.6 %, and left-footedness - by 42.2 %. The average Ka of the arms and legs decreased, the symmetry of the leg was established and the third quartile significantly deviated in the positive direction. The incidence of the dominant left eye decreased by 2022 by 38.1 % compared to 2015. The decrease in the incidence of left-eyedness is accompanied by a decrease in both the average and median values of Ka, which indicates the symmetry of the function of this organ in left-handed people at the end of the seven-year period. Conclusions: Longitudinal studies of functional brain asymmetry in junior medical students indicate a trend towards dominance of the left hemisphere, which should help increase the level of development of cognitive functions and improve the adaptive capabilities of students in educational activities.
Степанова, Г. К. Лонгитудинальное изучение функциональной асимметрии мозга у студентов / Степанова Г. К., Егоров В. В. ; Северо-Восточный федеральный университет им. М. К. Аммосова, Медицинский институт // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия "Медицинские науки". - 2024. - N 3 (36). - C. 83-90.
Количество страниц: 8 с.
Степанова, Г. К. Адаптационные возможности кардиореспираторной системы и конституциональная неоднородность коренных жителей Республики Саха (Якутия) / Г. К. Степанова, М. В. Устинова ; Якутский государственный университет им. М. К. Аммосова // Наука и образование. - 2005. - N 2 (38). - С. 87-94.
Количество страниц: 4 с.
The types of functional brain asymmetry (FAM) in 104 Yakut students writing with the left (n = 44) and right (n = 60) hand were studied. The types of FAM were determined with the help of functional tests on three grounds: leading hand, ear, and eye. Evaluation of the level of FAM expression was carried out using the coefficient of asymmetry (Ka). Along with the low incidence of absolute right-handers (16.7 %) and left-handers (15.9 %), high occurrence of manual ambidexterity was revealed: in right-handed people - 46.7 %, in left-handed people - 54.5 %. The high prevalence of manual ambidexterity in combination with weak manifestation of manual asymmetry (Ka of arm in right-handed ambidexters at 0.13, in left-handed - 0.03), indicate interhemispheric interaction of motor zones. High occurrence (31.7 %) of right-handed sensory symmetry of the eye is combined with a low value of Ka (0.27) of this organ. Left-handed people are dominated by persons with the left leading ear (59.0 %) and the eye (52.3 %), as well as sensory ambidexters of the ear (20.5 %) and eyes (38.6 %). Left-handed patients have a relatively high level of left-sided asymmetry of the ear (Ka-0.44) and eye (Ka-0.41). The above results suggest the predominant participation of the right hemisphere, or the uniform participation of both hemispheres in the processing of sensory information in the examined. Apparently, in Yakuts, like in other indigenous peoples of the North, the formation of the right hemisphere and ambidextral profiles of FAM is associated with adaptive changes in the organism occurring under extreme environmental conditions
Особенности полушарного доминирования у студентов / Г. К. Степанова, К. А. Кривоошапкин, А. А. Макаров, Н. И. Слюгров // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Медицинские науки.— 2017. — N 4 (09). — С. 96-99.
Количество страниц: 4 с.
- Математика. Естественные науки > Геология. Геологические и геофизические науки,
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Медицина > Патология. Клиническая медицина > Кардиология,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки,
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Медицина > Патология. Клиническая медицина > Кардиология.
Степанова, Г. К. Влияние геомагнитных и метеофакторов на сердечный ритм юношей-якутов / Г. К. Степанова, В. И. Козлов // Физика окружающей среды : материалы Всероссийской конференции с международным участием, посвященной 50-летию первого полета человека в космос и 75-летию регулярных исследований ионосферы в России, г. Томск, 27 июня - 1 июля 2011 г. – Томск : ТГУ, 2011. – С. 264-267.