Liu Weiqing, Xing Lidong, Yao Liuye, Zou Zhihan, Zhang Yu
Nanjing University of Aeronautics and Astronautics, Nanjing, 210016.
Zhongguo Yi Liao Qi Xie Za Zhi. 2021 Jun 8;45(3):280-283. doi: 10.3969/j.issn.1671-7104.2021.03.010.
In order to obtain comprehensive brain activity information conveniently in real time, this study designs a portable EEG and blood oxygen synchronous acquisition system for real-time monitoring of brain functional activities. The EEG electrodes filter and amplify the detected EEG signals, and send them to the microprocessor via Bluetooth to analyze the EEG data; the photoelectric probe converts the optical signals into electrical signals, which are amplified and separated, filtered, and AD converted, calculates the brain's oxygenation and blood-red protein (ΔHbO) and blood-red protein (ΔHb) by amplification of Lambert-Beer law. Finally, experiments with commercial instruments NuAmps and Oximeter show that the system can calculate ΔHbO and ΔHb while collecting EEG signals.
为了方便地实时获取全面的脑活动信息，本研究设计了一种便携式脑电图（EEG）和血氧同步采集系统，用于实时监测脑功能活动。EEG电极对检测到的EEG信号进行滤波和放大，然后通过蓝牙将其发送到微处理器以分析EEG数据；光电探头将光信号转换为电信号，经过放大、分离、滤波和AD转换，根据朗伯-比尔定律的放大计算出大脑的氧合血红蛋白（ΔHbO）和血红蛋白（ΔHb）。最后，使用商用仪器NuAmps和血氧计进行的实验表明，该系统在采集EEG信号的同时能够计算出ΔHbO和ΔHb。
