Single-trail EEG processing for brain computer interface

A. Funase, H. Nakatani, M. Mouri, T. Yagi, A. Cichocki, I. Takumi

Research output: Contribution to journalConference articlepeer-review


We have been researching relationship between saccadic eye movements and EEG signals before saccadic eye movements in order to develop the Brain-Computer Interface (BCI). In our previous studies, saccade-related EEG signals were obtained with ensemble averaging. However, the ensemble averaging is not suitable for BCIs because ensemble averaging is not can not process EEG signals in real-time. In order to overcome this problem, an independent component analysis (ICA) is applied to processing on saccade-related EEG signals. We have already detected saccade-related EEG signals by ensemble averaging and saccade-related independent components (ICs) by independent component analysis (ICA). However, features of saccade-related EEG signals and saccaderelated ICs were not compared. In this study, saccade-related EEG signals and saccade-related ICs in visually and auditorily guided saccade task are compared in the point of the latency between starting time of a saccade and time when a saccaderelated EEG signal or an IC has maximum value and in the point of the peak scale where a saccade-related EEG signal or an IC has maximum value.

Original languageEnglish
Pages (from-to)1059-1062
Number of pages4
JournalIFMBE Proceedings
Issue number1
Publication statusPublished - 2007
Externally publishedYes
Event10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 - Seoul, Korea, Republic of
Duration: 27 Aug 20061 Sep 2006


  • Brain computer interface
  • Independent component analysis
  • Saccadic eye movement


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