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Toward a Fast and Robust MI-BCI: Online Adaptation of Stimulus Paradigm and Classification Model | |
Wang, Jiaxing1![]() ![]() ![]() | |
发表期刊 | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
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ISSN | 0018-9456 |
2024 | |
卷号 | 73页码:12 |
摘要 | Motor imagery-based brain-computer interface (MI-BCI) has shown promising potential for improving motor function in neurorehabilitation and motor assistance among patients. However, the decoding accuracy of MI-BCI is limited by the nonstationarity and high intersubject variability of electroencephalogram (EEG) signals. Moreover, decoding MI intention based on fixed-length EEG signals will not only increase the risk of misclassification but also diminish the information transfer rate (ITR) of the BCI system. To overcome these limitations, an adaptive decoding method based on the synchronous adaptation of stimulus paradigm and classification model is proposed to realize a fast and robust MI-BCI. First, an attention-driven dynamic stopping (DS) strategy, which is designed based on the theta-to-beta ratio of EEG signals, is proposed to control the MI-related EEG acquisition time. It can adaptively minimize the data length used for classification under the ensurance of getting a credible classification result, thus improving brain-computer interaction efficiency. Then, the minimum distance to the Riemannian mean algorithm is introduced for the four-class EEG classification. To improve the classification accuracy, the classification model is adapted online based on the error-related potential (Errp) to process the nonstationary characteristics of EEG signals. The feasibility of the proposed online collaborative optimization method in fast and accurate interaction was validated on ten healthy subjects. The results show that the proposed method can significantly improve the EEG classification accuracy by 2.73% with 9.04 ITR improvement compared with that without adaptation (paired t-test, p < p 0.05). Moreover, the MI duration of 2.57 s is recommended for stimulus paradigm design to achieve a better tradeoff between accuracy and efficiency of brain-computer interaction. These phenomena further demonstrate the feasibility of the proposed method in advancing the development of MI-BCI with high efficiency, robustness, and flexibility. |
关键词 | Brain-computer interface (BCI) classification model adaption information transfer rate (ITR) motor imagery (MI) duration stimulus paradigm adjustment |
DOI | 10.1109/TIM.2024.3384559 |
关键词[WOS] | BRAIN-COMPUTER INTERFACE ; COMMON SPATIAL-PATTERN ; MOTOR IMAGERY ; EEG CLASSIFICATION ; NETWORKS |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Key Research and Development Program of China |
项目资助者 | National Key Research and Development Program of China |
WOS研究方向 | Engineering ; Instruments & Instrumentation |
WOS类目 | Engineering, Electrical & Electronic ; Instruments & Instrumentation |
WOS记录号 | WOS:001205105500017 |
出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
七大方向——子方向分类 | 脑机接口 |
国重实验室规划方向分类 | 脑启发多模态智能模型与算法 |
是否有论文关联数据集需要存交 | 否 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/57054 |
专题 | 多模态人工智能系统全国重点实验室 |
通讯作者 | Wang, Weiqun; Hou, Zeng-Guang |
作者单位 | 1.Chinese Acad Sci, Inst Automat, State Key Lab Multimodal Artificial Intelligence S, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Artificial Intelligence, Beijing 100049, Peoples R China 3.Macau Univ Sci & Technol, Inst Syst Engn, CASIA MUST Joint Lab Intelligence Sci & Technol, Macau, Peoples R China |
第一作者单位 | 中国科学院自动化研究所 |
通讯作者单位 | 中国科学院自动化研究所 |
推荐引用方式 GB/T 7714 | Wang, Jiaxing,Wang, Weiqun,Su, Jianqiang,et al. Toward a Fast and Robust MI-BCI: Online Adaptation of Stimulus Paradigm and Classification Model[J]. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT,2024,73:12. |
APA | Wang, Jiaxing,Wang, Weiqun,Su, Jianqiang,Wang, Yihan,&Hou, Zeng-Guang.(2024).Toward a Fast and Robust MI-BCI: Online Adaptation of Stimulus Paradigm and Classification Model.IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT,73,12. |
MLA | Wang, Jiaxing,et al."Toward a Fast and Robust MI-BCI: Online Adaptation of Stimulus Paradigm and Classification Model".IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 73(2024):12. |
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