Measuring Blink-Related Brainwaves Using Low-Density Electroencephalography with Textile Electrodes for Real-World...

Area of Science:

• Neuroscience
• Biomedical Engineering
• Wearable Technology

Background:

• Textile electrodes are emerging for wearable electroencephalography (EEG) systems.
• Blink-related oscillations (BROs) are a novel brain function biomarker indexed by post-blink neural activity.
• Previous research highlights BROs' potential in clinical and non-clinical cognition assessment.

Purpose of the Study:

• To evaluate the efficacy of textile electrodes for measuring blink-related oscillations (BROs).
• To compare BRO measurement using textile electrodes versus traditional dry Ag/Ag-Cl electrodes.
• To assess the feasibility of comfortable, user-friendly EEG for real-world brain function monitoring.

Main Methods:

• Utilized a four-channel EEG system equipped with textile electrodes.
• Extracted BRO responses from existing, publicly available EEG data (n=9).
• Compared textile electrode-derived BROs with those from standard Ag/Ag-Cl electrodes at identical scalp locations (Fp1, Fp2, F7, F8).

Main Results:

• Textile electrodes demonstrated comparable BRO measurement to standard dry electrodes in both time and frequency domains.
• Both electrode types showed similar performance in artifact removal and signal acquisition.
• Successful BRO signal capture was achieved using the textile electrode-based EEG system.

Conclusions:

• This study presents the first successful demonstration of BRO signal detection using textile electrodes in a four-channel EEG setup.
• Findings support the development of comfortable and user-friendly EEG technology for objective brain function assessment.
• Blinking serves as a viable mechanism for brain activity monitoring in diverse settings using advanced textile sensors.