Relationship between EEG and ECG findings at rest and during brain activity

Abstract

The development of information technology has enabled increasingly easy access to biological information. Humans need to rest in accordance with individual biological status. This study aimed to determine relationships between findings from electroencephalography (EEG) and electrocardiography (ECG) as physiological indices at rest and during brain activity. Correlations between seated rest and seated rest on a massage chair were low, indicating that the power of alpha brain waves decreased as R-R interval (RRI) increased. However, this study did not show correlations between seated rest + the auditory 2-back task and seated rest on the massage chair. RRI and the power of alpha waves during tasks changed depending on whether the participant was relaxed or engaged in brain activity, with an inverse correlation between the two factors. The relationship between EEG and ECG findings at rest and during brain activity reflects the relationship between the central and autonomic nervous systems at rest.