Title :
Nonlinear dynamic extraction of cognitive evoked potential based on wavelet transform
Author :
Yuan, Jianping ; Hu, Yongmei ; Jiang, Xiaona ; Zhai, Lihong ; Guo, Chunhua
Author_Institution :
Sch. of Control Sci. & Eng., Shandong Univ., Jinan
Abstract :
Cognitive evoked potential (CEP) is an important description of brain cognitive function. At present average CEP of several measurements is used to extract CEP. However, as the latency of CEP varies at a large area, averaging brings a serious distort of shape and amplitude. So, nonlinear dynamic extraction of CEP using one or a few trials has been widely discussed. In this paper, we will introduce three typical extraction methods circumfusing wavelet transform (WT). They reflect the research trend of CEP extraction and the great function of WT. They are: wavelet de-noising, subspace method and wavelet de-noising, wavelet transformation and blind source separation.
Keywords :
bioelectric potentials; blind source separation; cognition; electroencephalography; medical signal processing; wavelet transforms; EEG signal; blind source separation; brain cognitive function; cognitive evoked potential; electroencephalography; extraction methods; nonlinear dynamic extraction; subspace method; wavelet de-noising; wavelet transform; wavelet transformation; Biomedical engineering; Biomedical measurements; Brain modeling; Computational modeling; Data mining; Delay; Electroencephalography; Enterprise resource planning; Noise reduction; Wavelet transforms;
Conference_Titel :
Information Technology and Applications in Biomedicine, 2008. ITAB 2008. International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-2254-8
Electronic_ISBN :
978-1-4244-2255-5
DOI :
10.1109/ITAB.2008.4570555
