Relationship Between Mood, Sleepiness, and EEG Functional Connectivity by 40 Hz Monaural Beats

• Published in: 2024 12th International Winter Conference on Brain-Computer Interface (BCI) pp. 1 - 4
• Main Authors: Jo, Ha-Na, Kweon, Young-Seok, Shin, Gi-Hwan, Kwak, Heon-Gyu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 26.02.2024
• Subjects: Correlation; electroencephalogram; Electroencephalography; functional connectivity; Limiting; Modulation; monaural beats; Mood; Protocols; Sleep; sleepiness
• ISSN: 2572-7672
• DOI: 10.1109/BCI60775.2024.10480473

Monaural beats are known that it can modulate brain and personal states. However, which changes in brain waves are related to changes in state is still unclear. Therefore, we aimed to investigate the effects of monaural beats and find the relationship between them. Ten participants took part in five separate random sessions, which included a baseline session and four sessions with monaural beats stimulation: one audible session and three inaudible sessions. An electroencephalogram (EEG) was recorded and participants completed pre- and post-stimulation questionnaires assessing mood and sleepiness. As a result, an audible session led to positive mood and arousal compared to other conditions. From the neurophysiological analysis, statistical differences in frontal-central, central-central, and central-parietal connectivity were observed only in the audible session at 40 Hz. Furthermore, a significant correlation was identified between sleepiness and EEG power in the temporal and occipital regions. These results suggested a more detailed relation for stimulation to change its personal state. These findings have implications for applications in areas such as cognitive enhancement, mood regulation, and sleep management.