Cortical effects of user training in a motor imagery based brain-computer interface measured by fNIRS and EEG

被引:142
作者
Kaiser, Vera [1 ]
Bauernfeind, Guenther [1 ]
Kreilinger, Alex [1 ]
Kaufmann, Tobias [2 ]
Kuebler, Andrea [2 ]
Neuper, Christa [1 ,3 ]
Mueller-Putz, Gernot R. [1 ]
机构
[1] Graz Univ Technol, Inst Knowledge Discovery, A-8010 Graz, Austria
[2] Univ Wurzburg, Dept Psychol 1, Sect Intervent Psychol, D-97070 Wurzburg, Germany
[3] Graz Univ, Dept Psychol, Graz, Austria
关键词
Brain-computer interface (BCI); BCI training; Motor imagery (MI); Cortical training effects; Functional near-infrared spectroscopy (fNIRS); Electroencephalography (EEG); NEAR-INFRARED SPECTROSCOPY; NEURONAL-ACTIVITY; ERD/ERS PATTERNS; BETA-RHYTHMS; SYSTEM; DESYNCHRONIZATION; CLASSIFICATION; OXYGENATION; FMRI; BCI;
D O I
10.1016/j.neuroimage.2013.04.097
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The present study aims to gain insights into the effects of training with a motor imagery (MI)-based brain-computer interface (BCI) on activation patterns of the sensorimotor cortex. We used functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG) to investigate long-term training effects across 10 sessions using a 2-class (right hand and feet) MI-based BCI in fifteen subjects. In the course of the training a significant enhancement of activation pattern emerges, represented by an [oxy-Hb] increase in fNIRS and a stronger event-related desynchronization in the upper beta-frequency band in the EEG. These effects were only visible in participants with relatively low BCI performance (mean accuracy <= 70%). We found that training with an MI-based BCI affects cortical activation patterns especially in users with low BCI performance. Our results may serve as a valuable contribution to the field of BCI research and provide information about the effects that training with an MI-based BCI has on cortical activation patterns. This might be useful for clinical applications of BCI which aim at promoting and guiding neuroplasticity. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码:432 / 444
页数:13
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