| 104B4 |
|---|
| Study of Frequency Component of EEG Waves under Visual Recognition Task |
| AUTHORS |
| Katsuhiro Inoue, Ryuji Yano, Kousuke Kumamaru (Kyushu Institute of Technology) Shigeaki Matsuoka (Akane Medical Association,Syowa hospital) |
| ABSTRACT |
| The various biosignals are used for the man-machine interface which connects the human with the computer. EEG signal is one of the most interesting signal among them. ERPs(Event-Related Potentials) are strongly related with mental activity. This fact suggests that EEG wave includes some information about brain activities i.e. recognition process. If such information can be extracted from EEG waves, it might be used on man-machine interface. Until now, feature extraction method of EEG wave patterns corresponding to the kind of a visual recognition task have been investigated in our studies. In this paper, it was investigated that study of frequency component of EEG waves under visual recognition task. First, visual oddball experiments were executed. The subjects were instructed to count the number of stimuli presentations mentally in the experiments. Next, we analyzed obtained response EEG about frequency characteristic by the Fourier transform. The result was examined for the difference between target response and nontarget response by using the EEG Map. It was confirmed that the EEG waves under the target stimuli have more high power on a specific frequency band than the one under the nontarget stimuli. |
Back to Program
Time Table
Top of This Site
Annual Conference 2002