A Synchronous Motor Imagery Based Neural Physiological Paradigm for Brain Computer Interface Speller

被引:25
作者
Cao, Lei [1 ,2 ]
Xia, Bin [1 ,2 ]
Maysam, Oladazimi [3 ]
Li, Jie [4 ]
Xie, Hong [1 ]
Birbaumer, Niels [2 ,5 ]
机构
[1] Shanghai Maritime Univ, Coll Informat Engn, Dept Comp Sci, Shanghai, Peoples R China
[2] Univ Tubingen, Inst Med Psychol & Behav Neurobiol, Tubingen, Germany
[3] Univ Tubingen, Werner Reichardt Ctr Integrat Neurosci Syst Neuro, Tubingen, Germany
[4] Tongji Univ, Dept Comp Sci & Technol, Shanghai, Peoples R China
[5] IRCCS Fdn Osped San Camillo, Venice, Italy
来源
FRONTIERS IN HUMAN NEUROSCIENCE | 2017年 / 11卷
关键词
brain computer interface (BCI); motor imagery (MI); Oct-o-spell paradigm; synchronous control; speller; BCI COMPETITION 2003; P300; COMMUNICATION; CLASSIFICATION; PROSTHESIS; POTENTIALS; ERD/ERS; CONTEXT; MODEL;
D O I
10.3389/fnhum.2017.00274
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Brain Computer Interface (BCI) speller is a typical BCI-based application to help paralyzed patients express their thoughts. This paper proposed a novel motor imagery based BCI speller with Oct-o-spell paradigm for word input. Furthermore, an intelligent input method was used for improving the performance of the BCI speller. For the English word spelling experiment, we compared synchronous control with previous asynchronous control under the same experimental condition. There were no significant differences between these two control methods in the classification accuracy, information transmission rate (ITR) or letters per minute (LPM). And the accuracy rates of over 70% validated the feasibility for these two control strategies. It was indicated that MI-based synchronous control protocol was feasible for BCI speller. And the efficiency of the predictive text entry (PTE) mode was superior to that of the Non-PTE mode.
引用
收藏
页数:9
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