该文描述了一种高性能高分辨率EEG 数据采集系统。该系统采用了带前置放大的 EEG 电极、刚性头盔,用软件控制增益放大器和信号数字化,使用光耦合与计算机相联。微型前置放大器直接装在电极上,减少了与外界电磁场的耦合,降低了由于电极阻抗不匹配或升高而引起的信号失真。该电极使用快捷、皮肤处理少,密封性能优良。在重复实验中电极放置位置偏差在1～3mm 之间仍表现出较好的一 This paper describes a high performance and high resolution EEG data acquisition system. The system uses EEG electrodes with preamplifiers, rigid helmets, software-controlled gain amplifiers and digital signals, and optical coupling to a computer. The miniature preamplifier is mounted directly on the electrode, reducing the coupling with the external electromagnetic field and reducing signal distortion due to electrode impedance mismatch or rise. The electrode is fast, less skin treatment, excellent sealing performance. In repeated experiments, the electrode placement position deviation still showed a better one between 1 ~ 3mm