Effective time sequence and electrode recombination based electroencephalograph signal categorizing system and method
An EEG signal and effective time technology, applied in the field of EEG signal processing and analysis, can solve problems such as being easily denied by others, and achieve the effect of avoiding subjectivity and improving execution efficiency.
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[0026] The present invention will be further described below in combination with specific embodiments.
[0027] The present invention has following 6 steps in the step when training facial expression recognition classifier:
[0028] Firstly, in step 1, the EEG signal was collected according to the designed experiment. In the process of experiment collection, three types of facial expressions were selected as stimulus pictures, including happy expressions, neutral expressions and sad expressions. Each expression had 18 Each subject performed 408 trials, and each of the three types of tasks accounted for 136 trials. The process of each test is as follows: firstly, a prompt is displayed to the subject, and after the subject presses the space bar, a forward or reverse picture with one of the three expressions of happy, neutral, and sad is displayed. After the subjects clearly identify the expressions and press the corresponding buttons, it means that a test is over. The specific ...
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