Method and device for measuring electroencephalo of human body having mental pressure and for relaxation training
A mental stress and EEG technology, applied in the field of biomedicine, can solve the problems of incomplete rational mental stress, interference of collected signals, unreliable extraction, etc., and achieve the effects of high accuracy, good real-time performance and fewer electrodes.
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[0055] refer to figure 2 , the specific implementation of mental stress measurement and relaxation training method of the present invention is as follows:
[0056] Step 1, collect initial EEG data
[0057] The EEG acquisition electrodes are placed on the corresponding positions of the EEG signals to be measured on the user's forehead, and the reference electrodes are placed on both ears in the form of clips.
[0058] 1a) The EEG acquisition electrodes continuously collect the single-channel EEG signals of the user in a normal breathing state for 7s;
[0059] 1b) The preprocessing unit performs amplification, filtering and engineering notch on the collected single-channel EEG signal. The amplification gain is 110dB, the time constant is 0.1s, the resolution is 0.5μV, and the noise is less than 2.5μV p-p , the filter passband range is 0.7Hz to 75Hz;
[0060] 1c) The analog-to-digital conversion unit samples the collected single-channel EEG analog signal to obtain initial EEG...
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