Electrode-Electrolyte Interface Modeling and Impedance Characterizing of Tripolar Concentric Ring Electrode
Electrode-Electrolyte Interface Modeling and Impedance Characterizing of Tripolar Concentric Ring Electrode
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DOI：
10.1109/tbme.2019.2897935
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发表时间：
2019-10-01
影响因子：
4.6
通讯作者：
Besio, Walter G.
中科院分区：
文献类型：
--
作者：
Nasrollaholhosseini, Seyed Hadi;Mercier, Jason;Besio, Walter G.
在生物系统中，电极用于将离子电流转换为电流。对电极-电解质界面进行建模并表征界面的阻抗可以帮助优化电极界面的性能以实现更高的信噪比。以前的工作已经为单元件生物医学电极产生了精确的模型。本文介绍了一个模型的三极同心环电极（TCRE）来自阻抗测量使用电化学阻抗谱与Ten 20电极阻抗匹配膏。结果表明，该模型可以很好地预测TCREs以及标准杯电极的电极-电解质界面的性能。在本文中，我们还讨论了TCRE和标准杯电极之间的比较，关于他们的阻抗特性，并证明了在生物医学应用中使用TCRE的好处。我们还进行了听觉诱发电位实验，使用TCRE和标准杯电极。结果表明，三极同心环电极记录的脑电图（EEG）比标准杯电极记录的EEG更有利于以较少的刺激获得听性脑干反应。
Electrodes are used to convert ionic currents to electrical currents in biological systems. Modeling the electrode-electrolyte interface and characterizing the impedance of the interface could help to optimize the performance of the electrode interface to achieve higher signal to noise ratios. Previous work has yielded accurate models for single-element biomedical electrodes. This paper introduces a model for a tripolar concentric ring electrode (TCRE) derived from impedance measurements using electrochemical impedance spectroscopy with a Ten20 electrode impedance matching paste. It is shown that the model serves well to predict the performance of the electrode-electrolyte interface for TCREs as well as standard cup electrodes. In this paper, we also discuss the comparison between the TCRE and the standard cup electrode regarding their impedance characterization and demonstrate the benefit of using TCREs in biomedical applications. We have also conducted auditory evoked potential experiments using both TCRE and standard cup electrodes. The results show that electroencephalography (EEG) recorded from tripolar concentric ring electrodes is beneficial, acquiring the auditory brainstem response with less stimuli with respect to recoding EEG using standard cup electrodes.