A Review on Signal Processing Approaches to Reduce Calibration Time in EEG-Based Brain-Computer Interface

被引:11
作者
Huang, Xin [1 ]
Xu, Yilu [2 ]
Hua, Jing [2 ]
Yi, Wenlong [2 ]
Yin, Hua [2 ]
Hu, Ronghua [3 ]
Wang, Shiyi [4 ]
机构
[1] Jiangxi Normal Univ, Software Coll, Nanchang, Jiangxi, Peoples R China
[2] Jiangxi Agr Univ, Sch Software, Nanchang, Jiangxi, Peoples R China
[3] Nanchang Univ, Sch Mechatron Engn, Nanchang, Jiangxi, Peoples R China
[4] Jiangxi Univ Tradit Chinese Med, Youth League Comm, Nanchang, Jiangxi, Peoples R China
基金
中国国家自然科学基金;
关键词
signal processing; transfer learning; semi-supervised learning; EEG; brain-computer interface; calibration; MOTOR IMAGERY; CLASSIFICATION; ADAPTATION; COMMUNICATION; ALGORITHM; NETWORK; PATTERN; P300; SET;
D O I
10.3389/fnins.2021.733546
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In an electroencephalogram- (EEG-) based brain-computer interface (BCI), a subject can directly communicate with an electronic device using his EEG signals in a safe and convenient way. However, the sensitivity to noise/artifact and the non-stationarity of EEG signals result in high inter-subject/session variability. Therefore, each subject usually spends long and tedious calibration time in building a subject-specific classifier. To solve this problem, we review existing signal processing approaches, including transfer learning (TL), semi-supervised learning (SSL), and a combination of TL and SSL. Cross-subject TL can transfer amounts of labeled samples from different source subjects for the target subject. Moreover, Cross-session/task/device TL can reduce the calibration time of the subject for the target session, task, or device by importing the labeled samples from the source sessions, tasks, or devices. SSL simultaneously utilizes the labeled and unlabeled samples from the target subject. The combination of TL and SSL can take advantage of each other. For each kind of signal processing approaches, we introduce their concepts and representative methods. The experimental results show that TL, SSL, and their combination can obtain good classification performance by effectively utilizing the samples available. In the end, we draw a conclusion and point to research directions in the future.
引用
收藏
页数:19
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