PDF(Pubmed)
Abstract：
Electroencephalography (EEG) remains pivotal in neuroscience for its non-invasive exploration of brain activity, yet traditional electrodes are plagued with artifacts and the application of conductive paste poses practical challenges. Tripolar concentric ring electrode (TCRE) sensors used for EEG (tEEG) attenuate artifacts automatically, improving the signal quality. Hydrogel tapes offer a promising alternative to conductive paste, providing mess-free application and reliable electrode-skin contact in locations without hair. Since the electrodes of the TCRE sensors are only 1.0 mm apart, the impedance of the skin-to-electrode impedance-matching medium is critical. This study evaluates four hydrogel tapes\' efficacies in EEG electrode application, comparing impedance and alpha wave characteristics. Healthy adult participants underwent tEEG recordings using different tapes. The results highlight varying impedances and successful alpha wave detection despite increased tape-induced impedance. MATLAB\'s EEGLab facilitated signal processing. This study underscores hydrogel tapes\' potential as a convenient and effective alternative to traditional paste, enriching tEEG research methodologies. Two of the conductive hydrogel tapes had significantly higher alpha wave power than the other tapes, but were never significantly lower.
摘要：
脑电图（EEG）因其对大脑活动的非侵入性探索而在神经科学中仍然至关重要，然而，传统的电极受到伪影的困扰，导电膏的应用提出了实际挑战。用于脑电图（tEEG）的三极同心环电极（TCRE）传感器自动衰减伪影，提高信号质量。水凝胶胶带为导电浆料提供了一种有前途的替代品，提供无故障的应用程序和可靠的电极皮肤接触的位置没有头发。由于TCRE传感器的电极仅相距1.0毫米，例如,皮肤-电极阻抗匹配介质的阻抗是关键的。本研究评估了四种水凝胶胶带在脑电图电极应用中的功效，比较阻抗和α波特性。健康的成人参与者使用不同的磁带进行tEEG记录。尽管胶带感应阻抗增加，但结果突出了变化的阻抗和成功的α波检测。MATLAB的EEGLab促进了信号处理。这项研究强调了水凝胶胶带作为传统糊剂的方便和有效替代品的潜力，丰富了tEEG研究方法。两种导电水凝胶胶带的α波功率明显高于其他胶带，但从未显著降低。
