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首页> 外文会议>International Symposium on Medical Measurements and Applications >Dry Electrode Optimization for Wrist-based Electrodermal Activity Monitoring
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Dry Electrode Optimization for Wrist-based Electrodermal Activity Monitoring

机译：基于腕部的皮肤电活动监测的干电极优化

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Recent years of healthcare research has shown an increasing demand and interest in wearable personal healthcare systems. This, when combined with the superior utility of Electrodermal activity (EDA) for diverse applications ranging from market research to human stress and sleep quality analysis to seizure detection have driven significant interest towards optimizing dry electrode designs for EDA monitoring. The conventional wet adhesive Ag/AgCl electrodes, which is the gold standard, is used almost universally and provide excellent signal quality. However, they are less comfortable and not suitable for wearable scenarios that involve continuous long-term monitoring. This study focuses on identifying an optimum dry electrode configuration for monitoring EDA from the wrist. It is hypothesized that parameters like electrode material, interelectrode distance and anatomical location of measurement influence the dry electrode design for EDA detection. Accordingly, stainless steel, silver, brass and gold electrodes were fabricated with geometry and dimensions similar to that of commercially available standard wet electrodes. The fabricated electrodes were further investigated with interelectrode separations of 2 cm and 4 cm, both on the ventral and dorsal surfaces of the wrist at 6 cm distance from the carpus, thereby constituting 16 dry electrode configurations. An experimental protocol that spanned over 10 hours per subject was designed to investigate these configurations systematically and to identify the one that yielded the highest correlation with the gold standard. Also, the stabilization period for these dry electrode configurations were quantified as the time taken by the EDA signal to reach within ± 5% of its final value. The experimental study done on 7 subjects (3 females and 4 males, age: 23.3 ± 2.8 years; mean ± SD) illustrated that silver electrodes worn on the dorsal surface of the wrist with an interelectrode separation of 4 cm performed consistently well on all subjects with an average Pearson correlation coefficient of 0.899 ± 0.036, following an average stabilization time of 27.1 minutes.
机译：近年来的医疗保健研究表明，对可穿戴个人医疗保健系统的需求和兴趣不断增长。结合电皮肤活性（EDA）在市场研究，人体压力和睡眠质量分析到癫痫发作检测等各种应用中的卓越效用，人们对优化用于EDA监测的干电极设计产生了极大的兴趣。黄金标准的传统湿式Ag / AgCl湿式电极几乎被普遍使用，并提供出色的信号质量。但是，它们不太舒适，因此不适合涉及连续长期监控的可穿戴场景。这项研究的重点是确定用于监测手腕EDA的最佳干电极配置。假设诸如电极材料，电极间距离和测量的解剖位置之类的参数会影响用于EDA检测的干电极设计。因此，不锈钢，银，黄铜和金电极被制造成具有类似于市售标准湿电极的几何形状和尺寸。在距腕骨6 cm处的手腕腹侧和背侧表面上，用2 cm和4 cm的电极间间距进一步研究制成的电极，从而构成16种干电极构型。设计了一个跨每个受试者超过10个小时的实验方案，以系统地研究这些配置，并确定与金标准产生最高相关性的配置。同样，将这些干电极配置的稳定时间量化为EDA信号达到其最终值的±5％以内所花费的时间。对7名受试者进行的实验研究（3名女性和4名男性，年龄：23​​.3±2.8岁;平均数±SD）表明，佩戴在手腕背表面上且电极间距为4 cm的银电极在所有受试者中均表现良好在平均稳定时间为27.1分钟之后，平均皮尔逊相关系数为0.899±0.036。

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