Phase-locked and non-phase-locked event-related oscillations and channel power spectra analysis during motor imagery with speed parameters for BCRI

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 机器人学研究室

	Phase-locked and non-phase-locked event-related oscillations and channel power spectra analysis during motor imagery with speed parameters for BCRI
	Fu YF(伏云发); Xu BL(徐保磊); Pei LL(裴立力); Li HY(李洪谊)
	2011
会议名称	5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011
会议日期	May 10-12, 2011
会议地点	Wuhan, China
关键词	Bioinformatics Biomedical engineering Feature extraction Frequency bands Investments Power spectrum Robots Time domain analysis Wavelet transforms
中文摘要	Phase-locked and non-phase-locked event-related oscillations and channel spectra during motor imagery with speed parameters (fast 4Hz and slow 1Hz) were investigated in the paper. EEG signals related to imagination of six tasks that involved three limbs (left and right index fingers and right toes) and two speeds were first separated from original EEG signals mixed with noises by ICA. Then, event-related EEG trials were superposed and averaged to get time domain average EEG that was decomposed by wavelet transform to investigate phaselocked event-related oscillations. Event-related EEG trials were also decomposed by wavelet transform respectively and then superposed and averaged to investigate non-phase-locked eventrelated oscillations. In addition, power spectra for selected channel were calculated by FFT. By these methods, the latency of 50˜536ms and the low frequency band of 2.7˜8Hz for an increase in power early after the event, latencies and frequency bands for significant different changes and a different degree decrease in power at high frequency band between fast and slow motor imagery, and ERD / ERS in a broad frequency band for selected channels were found. Simultaneously extracting phase-locked and non-phase-locked event-related oscillations in broadband range may be very important for acquiring complete information about event-related EEG during motor imagery with speed parameters. The research results may be used in feature extraction for brain-controlled robots interface (BCRI). In the based on brain cognitive robots control, this study is also expected to provide some degree continuous and fine control strategies for BCR.
收录类别	EI
产权排序	1
会议主办者	IEEE Engineering in Medicine and Biology Society; Wuhan University; Fuzhou University; Nankai University; Overs. Chin. Sch. Environ. Prot. Assoc. (OCSEPA)
会议录	5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011
会议录出版者	IEEE Computer Society
会议录出版地	Piscataway, NJ
语种	英语
ISBN号	978-1-4244-5089-3
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/8828]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	Fu YF,Xu BL,Pei LL,et al. Phase-locked and non-phase-locked event-related oscillations and channel power spectra analysis during motor imagery with speed parameters for BCRI[C]. 见:5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011. Wuhan, China. May 10-12, 2011.