O214 Interdependence of heart and brain bioelectrical activity

Abstract

Objectives To study relationship between bioelectrical activity of brain and heart. The aim was to extract components related to heart activity in multichannel EEG recordings of healthy subjects. Methods The studied group consisted of 20 healthy subjects in age 20–32 yrs. Bioelectrical activity of the brain, electrooculography (HEOG and VEOG), respiratory signal and ECG from V5 derivation were recorded. In EEG signal an ECGEEG component related to the action of heart and one related to the interactions between the electric fields of heart and brain were extracted. The variations of the ECGEEG potential during the heart beat cycle were mapped. Results In the study group the topographic distribution of the ECGEEG potential had a cyclic change during the heart beat cycle. ECGEEG component revealed differences in polarity and amplitude as well as asymmetrical topographic distribution. The series of consecutive maps indicate asymmetry with anti-clockwise rotation. Conclusions The results indicate the significant, simultaneous changes of the analysed parameters of the EEG and ECG signals which suggests that they can be considered as indicators of the interaction between the autonomic and the central nervous systems. Significance Investigations of the relationship between the bioelectrical activities of heart and brain allow to expand the diagnostic capabilities of EEG and ECG, especially in the differential diagnosis of the neurologic and cardiologic diseases.