The state of the visual analyzer and the functions of higher nervous activity in the digitalization of school education 

Oksana B. Nizovibat'ko, Candidate of medical sciences, associate professor, head of the sub-department of anatomy and topographic anatomy, Medical Institute, Tambov State University named after G.R. Derzhavin (33 Internatsionalnaya street, Tambov, Russia), E-mail: nizovibatko@mail.ru
Vitaliy Yu. Afendulov, Student, Medical Institute, Tambov State University named after G.R. Derzhavin (33 Internatsionalnaya street, Tambov, Russia), E-mail: tsuitafendulov@gmail.com
Anna V. Zryutina, Senior lecturer of the sub-department of anatomy and topographic anatomy, Medical Institute, Tambov State University named after G.R. Derzhavin (33 Internatsionalnaya street, Tambov, Russia), E-mail: anna_zryutina@mail.ru
Nassif Ubaida, Assistant of the sub-department of anatomy and topographic anatomy, Medical Institute, Tambov State University named after G.R. Derzhavin (33 Internatsionalnaya street, Tambov, Russia), E-mail: nassifoubaida@gmail.com 

Background. Studies of the state of the visual analyzer performance and the functions of higher nervous activity of schoolchildren in the conditions of using computer devices in educational process will show the need to limit the additional load in order to maintain concentration and stability of attention. The purpose of the research is to study the effect of modern computer devices on the performance of the visual analyzer and the function of the higher nervous activity of schoolchildren. Materials and methods. The determination of CFFF (critical frequency of flicker fusion) was carried out on the “Light-test” machine. To study the volume of absolute accommodation and the stock of relative accommodation, we used the device to determine the volume of accommodation at the workplace of the subject. To assess the concentration of attention and short-term memory, we used the “10 words” method proposed by A.R. Luria. The stability of attention was assessed with the help of Bourdon test – “Correction test”. Results. It has been proved that working with the gadget for 40 minutes reduces the performance of the visual analyzer, namely, the volume of absolute accommodation is up to 6.1 D (deviation from the norm by 2.9 D – 32%), the margin of relative accommodation is up to 2.5 D (deviation from norms for 1.5 diopters - 37%). Attention stability and short-term memory also deteriorated after using the gadget from high to moderate levels. Conclusions. Thus, the conducted studies revealed a deterioration in visual performance indicators (relative accommodation reserve), a decrease in the level of performance of the visual analyzer (critical flicker fusion frequency), as well as a deterioration in the concentration and stability of schoolchildren's attention. 

critical flicker fusion frequency, absolute accommodation volume, relative accommodation margin, student's visual analyzer, school gadget 

Nizovibat'ko O.B., Afendulov V.Yu., Zryutina A.V., Ubaida N. The state of the visual analyzer and the functions of higher nervous activity in the digitalization of school education. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Meditsinskie nauki = University proceedings. Volga region. Medical sciences. 2022;(4):54–65. (In Russ.). doi:10.21685/2072-3032-2022-4-6