文章基本信息

标题：Classifying Single Trail Electroencephalogram Using Gaussian Smoothened Fast Hartley Transform for Brain Computer Interface during Motor Imagery
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作者：Deepa, V. B. ; Thangaraj, P. ; Chitra, S. 等
期刊名称：Journal of Computer Science
印刷版ISSN：1549-3636
出版年度：2011
卷号：7
期号：5
页码：757-761
DOI：10.3844/jcssp.2011.757.761
出版社：Science Publications
摘要：Problem statement: Brain-Computer Interface (BCI) is a emerging research area which translates the brain signals for any motor related actions into computer understandable signals by capturing the signal, processing the signal and classifying the motor imagery. This area of work finds various applications in neuroprosthetics. Mental activity leads to changes of electrophysiological signals like the Electroencephalogram (EEG) or Electrocorticogram (ECoG). Approach: The BCI system detects such changes and transforms it into a control signal which can, for example, be used as to control a electric wheel. In this study the BCI paradigm is tested by our proposed Gaussian smoothened Fast Hartley Transform (GS-FHT) which is used to compute the energies of different motor imageries the subject thinks after selecting the required frequencies using band pass filter. Results: We apply this procedure to BCI Competition dataset IVA, a publicly available EEG repository. Conclusion: The evaluations of preprocessed signals showed that the extracted features were interpretable and can lead to high classification accuracy by various mining algorithms.
关键词：Data mining; Brain-Computer Interface (BCI); Fast Hartley transform (FHT); Electroencephalogram (EEG); Motor Imagery (MI); Common Spatial Pattern (CSP); Event-Related Desynchronization/Synchronization (ERD/ERS); Discrete Wavelet Transform (DWT); Fourier Transform (FT)