Steady visual induction paradigm design and identification method for introducing continuous action of object

Abstract

The invention discloses a steady visual induction paradigm design and identification method for introducing a continuous action of an object. During paradigm design, one continuous action of the object is introduced, the continuous action of the object is disintegrated into a plurality of pictures, continuous black and white flashing is performed according to a time sequence, dynamic picture flashing units are formed, the dynamic picture flashing units are displayed on a computer to stimulate a user to generate a steady visual induction potential, a brain wave signal of the user staring at a certain flashing unit is collected and transmitted to the computer for processing, a canonical correlation analysis algorithm based on personal characteristic correction is adopted to perform target identification, the result is fed back to the user, the object is controlled to complete a corresponding action at the same time, and then target identification is performed for the next time. Through the method, corresponding steady visual induction paradigms can be designed according to different application objects, the control effect of "what you see is what you obtain" is achieved, the difference between user individuals is relieved, the correct rate of identification is increased, and the method can be widely applied to all types of brain-computer interface systems based on steady visual induction paradigms.

Description

technical field [0001] The present invention relates to the technical field of brain-computer interface, in particular to a design and identification method of a steady-state visual evoked paradigm that introduces continuous motion of an object. Background technique [0002] Brain-computer interface technology achieves direct control of external devices by establishing a direct information exchange channel between the human or animal brain and external devices. Some people who have impaired motor function due to neurodegenerative diseases such as amyotrophic lateral sclerosis, or people who have lost motor and language communication skills due to locked-in syndrome, can gain a kind of external communication through brain-computer interface technology. means of control and communication. With the development of science and technology, this technology has been extended to the fields of neurorehabilitation, auxiliary enhancement, game entertainment and aerospace military. [...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages of the prior art, the object of the present invention is to provide a steady-state visual evoked paradigm design and identification method that introduces continuous motion of the object, so as to control the two functions of hand opening, hand closing, wrist internal rotation, and wrist external rotation. Take the free artificial hand as an example. During the paradigm design process, the continuous movement process of the artificial hand is introduced, and the corresponding dynamic picture flashing unit is designed to attract the user's attention, prevent visual fatigue, and achieve the control effect of "what you see is what you get". Improve user experience; at the same time, use the canonical correlation analysis algorithm based on personal characteristic correction for target recognition of steady-state visual evoked potentials to improve the accuracy of recognition and improve the problem of excessive inter-individual differences

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