石墨烯干电极在512导联脑电帽和实时监测脑电系统中的应用
Application of Graphene Dry Electrode in 512-Lead EEG Cap and Real-Time Monitoring EEG System.
摘要(中文译文)
低噪声、低电位漂移的干式脑电电极对于日常可穿戴及高密度无创脑机接口至关重要。本研究制备了直径为2.8 mm的钠掺杂垂直石墨烯干电极，用于构建512导联超高密度脑电帽以及无线8导联和32导联脑电头带。钠掺杂垂直石墨烯层具有三维结构，可吸收头皮汗液并将其转化为钠介导的固态电解质，从而实现器件与头皮的电连接。优化后的石墨烯干电极表现出较低的头皮接触阻抗（干态：3.8-6.5 kΩ，水合态：4.5 kΩ）、自噪声（11.1 μV）、直流偏移电压（15.6 mV）和电位漂移（189.9 μV）。由512个石墨烯干电极组成的脑电帽以高信噪比记录了不同的节律信号，在103天内展现出优异的可重复性和长期稳定性。此外，本研究设计了一种任务态策略，将快波与慢波的强度比与频域事件相关电位相结合，证明了干电极头带系统在日常佩戴中进行快速注意力分析的可靠性。这种可穿戴金属掺杂垂直石墨烯干电极器件，尤其是512导联超高密度干电极脑电帽，在脑功能研究、神经影像学和脑机接口控制方面具有应用前景。
Abstract
Dry electroencephalography (EEG) electrodes with low noise and minimal potential drift are crucial for daily wearable and high-density noninvasive brain-computer interfaces. In this study, a Na-doped vertical graphene dry electrode with a diameter of 2.8 mm was prepared to construct a 512-lead ultrahigh-density EEG cap and wireless 8- and 32-lead EEG headbands. The Na-doped vertical graphene layer has a three-dimensional architectural structure that absorbs sweat from the scalp and converts it into an Na-mediated solid electrolyte, electrically connecting the device to the scalp. The optimized graphene dry electrodes exhibited low scalp-contact resistance (dry: 3.8-6.5 kΩ, HO: 4.5 kΩ), self-noise (11.1 μV), DC offset voltage (15.6 mV), and potential drift (189.9 μV). The EEG cap, composed of 512 dry graphene electrodes, recorded different rhythm signals with a high signal-to-noise ratio, demonstrating excellent repeatability and long-term stability over 103 days. In addition, a task-state strategy was designed that combined the intensity ratio of fast and slow waves with frequency-domain event-related potentials, demonstrating the reliability of dry electrode headband systems for rapid attention analysis during daily wear. This wearable metal-doped vertical graphene dry-electrode device, especially the 512-lead ultrahigh-density dry-electrode EEG cap, holds promise for applications in brain function research, neuroimaging, and brain-computer interface control.
如何引用
AMA
Jiawei Liu, Xinyi Yang, Mingji Li, Chunhou Zheng, Kun Wang, Xinrong Ren, et al. Application of Graphene Dry Electrode in 512-Lead EEG Cap and Real-Time Monitoring EEG System.. ACS applied materials & interfaces. 2026; doi:10.1021/acsami.5c25282.
APA
Jiawei Liu, Xinyi Yang, Mingji Li, Chunhou Zheng, Kun Wang, Xinrong Ren, et al (2026). Application of Graphene Dry Electrode in 512-Lead EEG Cap and Real-Time Monitoring EEG System.. ACS applied materials & interfaces. https://doi.org/10.1021/acsami.5c25282
GB/T 7714
Jiawei Liu, Xinyi Yang, Mingji Li, Chunhou Zheng, Kun Wang, Xinrong Ren, et al. Application of Graphene Dry Electrode in 512-Lead EEG Cap and Real-Time Monitoring EEG System.[J]. ACS applied materials & interfaces, 2026 doi:10.1021/acsami.5c25282.
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