COGNITIVE AND PSYCHOEMOTIONAL FUNCTIONS IN PATIENTS WITH HEALTHY ISCHEMIC STROKE IN COMPARISON WITH MATHEMATICAL ANALYSIS OF THE BIOELECTRIC ACTIVITY OF THE BRAIN

The aim of the study was to study the relationship and comparison of data from a neuropsychological study and the results of a mathematical analysis of electroencephalography (EEG). The first mathematical analysis of EEG in patients with ischemic stroke in the MCA pool revealed a decrease in alpha rhythm power, an increase in beta, delta and theta rhythms in the affected hemisphere, as well as an increase in hemisphere coherence. There has been established the relationship of cognitive and anxiety-depressive disorders with the degree of power of alpha, beta, theta and delta waves on the affected side. Identified pathological EEG patterns are more significant in the temporal region on the affected side and correlate with neuropsychological findings. As a result of the study, it was found that cognitive and anxiety-depressive disorders are detected already in the acute and acute period of ischemic stroke. The data of a neuropsychological study are comparable with the EEG data, which allows us to assume that there is a possibility of using mathematical analysis to assess the degree of cognitive impairment in patients with ischemic stroke.