Visual and auditory brain-computer interface spelling system and method based on space and semantic consistency
A brain-computer interface and auditory technology, applied in the direction of mechanical mode conversion, computer parts, character and pattern recognition, etc., can solve problems such as unsatisfactory performance of the brain-computer interface, and achieve the effect of improving performance and strong versatility
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[0022] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0023] In one of the embodiments, such as figure 1 As shown, the present invention discloses an audiovisual brain-computer interface spelling system based on spatial and semantic consistency. The system includes an audiovisual stimulation device, an EEG signal acquisition device, and a computer. The audiovisual stimulation device is based on spatial and semantic consistency. The visual and auditory experimental paradigm produces visual and auditory stimuli about the target characters to the subjects; the EEG signal acquisition device collects the EEG signals of the subjects and sends the collected EEG signal data to the computer; The signal data is preprocessed to obtain the preprocessed EEG signal data; the computer performs feature extraction and classification of the preprocessed EEG signal data to obtain the classif...
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