Analysis of the frequency characteristics of the brain-and heart

This is a syndrome that develops as a result of certain disorders of the cardiovascular system, manifested by sudden focal neurological symptoms. Given the cerebrovascular etiology of this condition, a joint and simultaneous assessment of the degree and quality of disorders of the cardiovascular and nervous systems is necessary. The need to develop a quantitative index for assessing neuroplasticity is dictated by the desire to objectify and refi ne the assessment of rehabilitation potential for timely rehabilitation, the volume should be suffi cient and safe in the acute period of stroke. Objective — the goal of this study is to identify the relationship between brain and heart bioelectric activity in patients during the acute stage of stroke, to explore the possibility of evaluating rehabilitation potential, and to investigate the possibility of numerically assessing neuroplasticity. Material and methods. The functional state of the brain was studied using EEG, with parallel measurement of physiological signals from cardiac activity obtained from high-resolution ECG recordings. Dispersion mapping of the ECG and analysis of heart rate variability were used in 26 patients with acute cerebrovascular accidents within the fi rst 10 days after diagnosis. The main characteristics of the alpha rhythm were compared with classical indicators from high-resolution ECG data. Results. A relationship between the characteristics of heart rate and alpha rhythm signals was established. Indices refl ecting the functional state of the cardiovascular and nervous systems were proposed, and their relationship with the NIHHS and Rankin scales was determined. Conclusions. The evidence of the “brain-heart axis” opens up new possibilities for the study, prediction, and treatment of cardiovascular and neurological diseases.

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