Key technology of brain-computer interaction based on speech imagery.
10.7507/1001-5515.202107018
- Author:
Yanpeng LIU
1
;
Anmin GONG
2
;
Peng DING
1
;
Lei ZHAO
3
;
Qian QIAN
1
;
Jianhua ZHOU
1
;
Lei SU
1
;
Yunfa FU
1
Author Information
1. School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, P. R. China.
2. College of Information Engineering, Engineering University of PAP, Xi'an 710000, P. R. China.
3. Faculty of Science, Kunming University of Science and Technology, Kunming 650500, P. R. China.
- Publication Type:Journal Article
- Keywords:
Brain-computer interaction;
Classification;
Decoding;
Experimental paradigm;
Speech imagery
- MeSH:
Brain;
Computers;
Humans;
Imagery, Psychotherapy;
Speech;
Technology
- From:
Journal of Biomedical Engineering
2022;39(3):596-611
- CountryChina
- Language:Chinese
-
Abstract:
Speech expression is an important high-level cognitive behavior of human beings. The realization of this behavior is closely related to human brain activity. Both true speech expression and speech imagination can activate part of the same brain area. Therefore, speech imagery becomes a new paradigm of brain-computer interaction. Brain-computer interface (BCI) based on speech imagery has the advantages of spontaneous generation, no training, and friendliness to subjects, so it has attracted the attention of many scholars. However, this interactive technology is not mature in the design of experimental paradigms and the choice of imagination materials, and there are many issues that need to be discussed urgently. Therefore, in response to these problems, this article first expounds the neural mechanism of speech imagery. Then, by reviewing the previous BCI research of speech imagery, the mainstream methods and core technologies of experimental paradigm, imagination materials, data processing and so on are systematically analyzed. Finally, the key problems and main challenges that restrict the development of this type of BCI are discussed. And the future development and application perspective of the speech imaginary BCI system are prospected.
