Development of a quasi-dry electrode for EEG recording
Development of a quasi-dry electrode for EEG recording
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DOI：
10.1016/j.sna.2013.06.013
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发表时间：
2013-09-01
影响因子：
4.6
通讯作者：
Fonseca, C.
中科院分区：
文献类型：
--
作者：
Mota, A. R.;Duarte, L.;Fonseca, C.
本文报道了一种新型的基于聚合物的脑电电极原型的开发。新的电极概念介于经典的“湿”电极和“干”电极之间，可以解决它们的大部分缺点，同时保持两者的优点。通过电极/头皮内收，从电极内的储水池中释放少量的保湿剂(30亩L)，实现电极/头皮接触点的局部皮肤保湿效果。电极的功能取决于聚合物的机械性能和电极库的设计，该电极库在施加特定的内收力时会变形。利用数值模拟工具对电极几何形状和材料力学性能进行了定义和分析。新的电极原型被证明能够监测类似于商业银/氯化银电极的脑电信号，方法是使用商业电极所需的一小部分水溶液，从而避免损害或弄脏患者的头发。此外，由于使用了少量的保湿剂，由于凝胶运行而导致相邻电极之间的导电桥接的风险大大降低。(C)2013爱思唯尔B.V.保留所有权利。
The present work reports on the development of a novel polymer-based electrode prototype for electroencephalography (EEG). The new electrode concept lies between the classic "wet" and "dry" electrodes, allowing addressing most of their drawbacks, while keeping the advantages of both. A localized skin hydration effect at the electrode/scalp contact point is achieved by the release of a small amount of a moisturizing agent (30 mu l) from a reservoir inside the electrode, triggered by the electrode/scalp adduction. The electrode's functionality relies on the polymer mechanical properties and on the design of an electrode reservoir that deforms upon the application of a specified adduction force. Numerical modeling tools were used for the definition and analysis of the electrode geometry and the material mechanical properties. The new electrode prototype proved to be able to monitor EEG signals similar to those of the commercial silver/silver chloride electrodes by using a fraction of the hydrating solution necessary for the commercial electrodes, thus avoiding to damage or dirtying the patient's hair. Furthermore, due to the small amount of moisturizing agent employed, the risk of conductive bridges between adjacent electrodes due to gel running is considerably reduced. (C) 2013 Elsevier B.V. All rights reserved.