文献类型：期刊文献

英文题名：Optimized Motor Imagery Paradigm Based on Imagining Chinese Characters Writing Movement

作者：Qiu, Zhaoyang[1];Allison, Brendan Z.[2];Jin, Jing[1];Zhang, Yu[1];Wang, Xingyu[1];Li, Wei[3,4,5];Cichocki, Andrzej[6,7]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Shanghai 200237, Peoples R China;[2]Univ Calif San Diego, Dept Cognit Sci, La Jolla, CA 92093 USA;[3]Chinese Acad Sci, Shenyang Inst Automat, Shenyang 110016, Peoples R China;[4]Tianjin Univ, Sch Elect Engn & Automat, Tianjin 300072, Peoples R China;[5]Calif State Coll Bakersfield, Dept Comp & Elect Engn & Comp Sci, Bakersfield, CA 93311 USA;[6]RIKEN, Brain Sci Inst, Lab Adv Brain Signal Proc, Wako, Saitama, Japan;[7]Nicolaus Copernicus Univ UMK, Torun, Poland

年份：2017

卷号：25

期号：7

起止页码：1009

外文期刊名：IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING

收录：;EI(收录号：20173904202043);WOS:【SSCI(收录号:WOS:000407431300022)，SCI-EXPANDED(收录号:WOS:000407431300022)】；

基金：This work was supported in part by the Grant National Natural Science Foundation of China under Grant 61573142, Grant 61203127, Grant 91420302, and Grant 61305028, in part by the 13 Fundamental Research Funds for the Central Universities under Grant WG1414005, Grant WH1314023, and Grant WH1516018, and in part by the Shanghai Chenguang Program under Grant 14CG31. (Corresponding authors: Jing Jin; Xingyu Wang.)

语种：英文

外文关键词：Motor imagery; brain-computer interface (BCI); CSP; paradigm

摘要：Background: motor imagery (MI) is a mental representation of motor behavior. The MI-based brain computer interfaces (BCIs) can provide communication for the physically impaired. The performance of MI-based BCI mainly depends on the subject's ability to self-modulate electroencephalogram signals. Proper training can help naive subjects learn to modulate brain activity proficiently. However, training subjects typically involve abstract motor tasks and are time-consuming. Methods: to improve the performance of naive subjects during motor imagery, a novel paradigm was presented that would guide naive subjects to modulate brain activity effectively. In this new paradigm, pictures of the left or right hand were used as cues for subjects to finish the motor imagery task. Fourteen healthy subjects (11 male, aged 22-25 years, and mean 23.6 +/- 1.16) participated in this study. The task was to imagine writing a Chinese character. Specifically, subjects could imagine hand movements corresponding to the sequence of writing strokes in the Chinese character. This paradigm was meant to find an effective and familiar action formost Chinese people, to provide them with a specific, extensively practiced task and help them modulate brain activity. Results: results showed that the writing task paradigm yielded significantly better performance than the traditional arrow paradigm (p < 0.001). Questionnaire replies indicated that most subjects thought that the new paradigm was easier. Conclusion: the proposed new motor imagery paradigm could guide subjects to help them modulate brain activity effectively. Results showed that there were significant improvements using new paradigm, both in classification accuracy and usability.