Wearable dry electrodes are needed for long-term biopotential recordings but are limited by their imperfect compliance with the skin, especially during body movements and sweat secretions, resulting in high interfacial impedance and motion artifacts. Herein, we report an intrinsically conductive polymer dry electrode with excellent self-adhesiveness, stretchability, and conductivity. It shows much lower skin-contact impedance and noise in static and dynamic measurement than the current dry electrodes and standard gel electrodes, enabling to acquire high-quality electrocardiogram (ECG), electromyogram (EMG) and electroencephalogram (EEG) signals in various conditions such as dry and wet skin and during body movement. Hence, this dry electrode can be used for long-term healthcare monitoring in complex daily conditions. We further investigated the capabilities of this electrode in a clinical setting and realized its ability to detect the arrhythmia features of atrial fibrillation accurately, and quantify muscle activity during deep tendon reflex testing and contraction against resistance.

长期生物电位记录需要可穿戴干电极，但由于它们与皮肤的不完全顺应性而受到限制，特别是在身体运动和汗液分泌期间，导致高界面阻抗和运动伪影。在此，我们报告了一种具有优异自粘性、拉伸性和导电性的本征导电聚合物干电极。它在静态和动态测量中显示出比目前的干电极和标准凝胶电极更低的皮肤接触阻抗和噪声，能够在各种条件下获取高质量的心电图 (ECG)、肌电图 (EMG) 和脑电图 (EEG) 信号，例如作为干燥和潮湿的皮肤以及在身体运动期间。因此，这种干电极可用于复杂日常条件下的长期医疗监测。