THE P300-BASED BRAIN-COMPUTER INTERFACE WITH COMPLEX "FLASH plus MOVEMENT" STIMULI

Ganin, I.P.; Kaplan, A.Y.

Авторы: Ganin I.P., Kaplan A.Y.
Сборник: Proceedings of 53rd Annual Meeting of the Society for Psychophysiological Research. Florence, ITALY
Том: 50
Год издания: 2013
Место издания: PSYCHOPHYSIOLOGY 111 RIVER ST, HOBOKEN 07030-5774, NJ USA : WILEY-BLACKWELL
Первая страница: 41
Последняя страница: 41
Аннотация: The brain-computer interface (BCI) enables an individual sending messages or commands without any movements, using only the electroencephalographic or other signals from the brain. One of the most popular BCIs, the P300 BCI, requires the detection of P300 wave of brain event-related potentials (ERP). Most of its users learn the BCI control in several minutes and after a short classifier training they can type a text on the computer screen or assemble an image of separate fragments in simple BCI-based video games. Nevertheless, insufficient attractiveness for users and conservative stimuli organization in this BCI may restrict its integration into real information processes control. At the same time initial movement of stimuli may be an independent factor that induces P300 wave. In current work we proposed a new modification of P300 BCI with compact stimuli organization and checked the hypothesis if using complex “flash +movement” stimuli overcomes the conventional approach with flashing stimuli and if such BCI may be much more attractive for users. In 20 subjects research we showed the effectiveness of our interface. Both accuracy and P300 amplitude were higher for flashing stimuli and complex “flash +movement” stimuli compared to moving stimuli. N200 amplitude was maximal for flashing stimuli, while for “flash +movement” stimuli and moving stimuli it was only a half of it. We assume that similar BCI with complex stimuli may be embedded into compact control systems requiring high level of user attention under impact of negative external effects obstructing the BCI control.
Добавил в систему: Ганин Илья Петрович

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