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Journal Article


Lin CT, Chen YC, Huang TY, Chiu TT, Ko LW, Liang SF, Hsieh HY, Hsu SH, Duann JR. IEEE Trans. Biomed. Eng. 2008; 55(5): 1582-1591.


Brain Research Center, Department of Electrical and Computer Engineering, National Chiao-Tung University, Hsinchu 300, Taiwan, ROC.


(Copyright © 2008, Institute of Electrical and Electronic Engineers)






Biomedical signal monitoring systems have been rapidly advanced with electronic and information technologies in recent years. However, most of the existing physiological signal monitoring systems can only record the signals without the capability of automatic analysis. In this paper, we proposed a novel brain-computer interface (BCI) system that can acquire and analyze electroencephalogram (EEG) signals in real-time to monitor human physiological as well as cognitive states, and, in turn, provide warning signals to the users when needed. The BCI system consists of a four-channel biosignal acquisition/amplification module, a wireless transmission module, a dual-core signal processing unit, and a host system for display and storage. The embedded dual-core processing system with multitask scheduling capability was proposed to acquire and process the input EEG signals in real time. In addition, the wireless transmission module, which eliminates the inconvenience of wiring, can be switched between radio frequency (RF) and Bluetooth according to the transmission distance. Finally, the real-time EEG-based drowsiness monitoring and warning algorithms were implemented and integrated into the system to close the loop of the BCI system. The practical online testing demonstrates the feasibility of using the proposed system with the ability of real-time processing, automatic analysis, and online warning feedback in real-world operation and living environments.

Language: en


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