A mi-bci system induced by multiple scenes and its control method

A MI-BCI, multi-scene technology, applied in the input/output process of data processing, input/output of user/computer interaction, indoor games, etc. It is difficult to subjectively adjust and other problems to achieve the effect of improving the recognition rate
CN109992113BActive Publication Date: 2020-05-15YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANSHAN UNIV
Publication Date
2020-05-15

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Abstract

The invention discloses anMI-BCI system based on multi-scene induction and a control method thereof. The system four types of target guide type motor imagery induction scenes, namely sound characters, picture videos, 3D life scenes and virtual game scenes. a subject is inducted to perform motion imagination at different angles. During training, multi-channel EEG signals in a brain motion area are collected. Through signal preprocessing, feature extraction and PSO-SVM intention recognition, a result is outputted to a virtual scene for interactive control, thereby forming a closed-loop feedback training system. A dynamic brain topographic map is drawn by evaluating the nerve activation degree of a motion area so that visual nerve feedback reflecting the brain activation condition is provided for the subject. Adaptive switching adjustment is made on the training scene according to the current nerve activity degree to ensure that the subject is continuously in a motor nerve maximum degree activated state so as to improve the recognition rate of the system.
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Description

technical field

[0001] The invention relates to the field of brain-computer interface system identification, in particular to an MI-BCI system induced by multiple scenes and a control method thereof. Background technique

[0002] Brain-computer interface (brain-computer interface, BCI) is a system that realizes communication and control between the human brain and computers or other electronic devices based on EEG signals. It does not rely on the peripheral nervous system and muscle tissue of the human body. It is a more Rapid and effective man-machine interface. The brain-computer interface (move image-brain-computer interface, MI-BCI) system based on motor imagery is a kind of EEG signal (electroephalography, EEG) generated by motor imagery to realize direct communication and communication between the human brain and external devices. control interface.

[0003] In recent years, researchers at home and abroad have gradually applied motor imagery and brain-computer interf...

Claims

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