The application discloses a brain-computer interface
system based on vibration stimulation
selective attention, and the
system comprises a vibration tactile stimulation device, an electroencephalogram acquisition
system and a computer for stimulation interface presentation and
data processing; a subject sits on a chair about 70 cm in front of the stimulation interface, and vibration stimulation is applied to the index fingers of the left and right hands according to an experimental paradigm process, and the stimulation frequencies are respectively set as optimal specificity stimulation frequencies screened in advance; the subject selectively concentrates attention on a target side according to a prompt of the stimulation interface; the electroencephalogram acquisition system acquires electroencephalogram data of the subject, the acquired data are subjected to subsequent pretreatment,
feature extraction and classification to identify the target stimulation concerned by the subject, and the identification result is fed back to the subject in the form of vibration stimulation. The application can decode the user intention by using the electroencephalogram
signal feature difference induced by different vibration stimulation
selective attention tasks, and then convert the user intention into a target instruction, so that the user can interact with the external environment.