視覚誘発電位を利用した没入型仮想空間におけるブレイン・コンピュータ・インターフェイスに関する基礎研究

概要

論文の詳細を見る
Visual evoked potentials in human were recorded in CAVE-clone immersive multiscreen display. The obtained electroencephalogram (EEG) activity induced by the visual stimuli showed the feasibility as an additional communication channel, that is, the Brain Computer Interface. The visual stimuli of 0.5Hz- and 5Hz-illumination of simple virtual objects were presented to three healthy subjects. It was successfully found for all subjects that 5Hz-patterns resulted in the steady-state potentials, while 0.5Hz-patterns the transient-states as reported. The averaging and time-frequency analysis was performed to extract the features of the off-line EEG signals. The processed EEG waveforms with human attention would enable the new interface to recognize one interested virtual object among two objects floating in virtual space. The promising visual evoked potentials in CAVE-clone immersive virtual environment will be addressed in the viewpoint of intuitive trigger operations for on-line controlling of virtual objects.
日本バーチャルリアリティ学会の論文
2006-06-30