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Stress is the source of all diseases, and the detection and management of psychological stress are very essential to everyone. In this paper, a stress evaluating system based on the EEG is designed for evaluating the state of psychological stress objectively. Firstly, the changes of EEG signals are obtained in real-time by using TGAM modules. Then the signal processing and wireless transmission are carried out by using Bluetooth technology to the computer. The pressure eigenvalues of EEG, which includes focal point, the edge spectrum, EEG pressure index and so on, are extracted. Finally, the results of the EEG analysis are to realize the automatic evaluation of stress state. At the same time, the experiment of pressure induction and evaluation is designed for verifying specific groups and combined with the VAS test. The results show that the EEG analysis can detect psychological stress more objectively, comprehensively and accurately.

Research on the Method of Evaluating Psychological Stress by EEG