Open AccessELECTROENCEPHALOGRAPHIC MONITORING OF THE BRAIN FUNCTIONAL CONDITION IN MODERN UKRANIAN SCHOOLCHILDREN
Author(s) -
I. V. Redka,
Oksana Ya. Mykhalchuk,
Zh. V. Sotnikova–Meleshkina
Publication year - 2020
Publication title -
wiadomości lekarskie
Language(s) - English
Resource type - Journals
eISSN - 2719-342X
pISSN - 0043-5147
DOI - 10.36740/wlek202012114
Subject(s) - electroencephalography , hyperventilation , audiology , brain activity and meditation , alpha (finance) , medicine , psychology , developmental psychology , neuroscience , anesthesia , psychometrics , construct validity
The aim: To monitor the brain functional state of generally healthy Ukrainian schoolchildren according to computer electroencephalography (EEG).Materials and methods: EEG examination of 125 practically healthy (according to medical records) schoolchildren of both sexes, which were divided into 3 age groups: 1) 8–12years old (n = 49); 2) 13–16 years old (n = 42); 3) 17–18 years old (n = 34). EEG was recorded at rest with eyes closed and during functional tests (eye opening, hyperventilation).Visual and spectral analyzes of the EEG were carried out, types of EEG were determined according to A.E. Zhirmunskaya. (1991) in the adaptation of N.L. Gorbachevskaya et al. (1999).Results: The peak frequency of alpha activity is in the range of 9 to 11.5 Hz, with a tendency to increase as you grow older. A disorganized type of EEG with a predominance ofalpha activity dominates with an organized type of EEG. For most schoolchildren, normal EEG reactivity predominates in response to functional tests. The detection rate of shortfragments of pathological activity in the background did not exceed 8%, but increased to 20% with hyperventilation.Conclusions: Only a third of modern Ukrainian schoolchildren classified as “healthy” have a physiological type of EEG, which indicates the optimal functional state of the brain.The remaining part of generally healthy schoolchildren have EEG changes, which reflect initial functional disorders mainly at the level of nonspecific structures and the brain stem.