Research of Visual Stimulation Method and Design of Visual Stimulator Based on Brain-Computer Interface

Abstract:

Brain Computer Interface (BCI) is a new ways of communicating with outside for the loss of some or all of the muscles controlling function of the patients. And the BCI is to set up a new information communication and control channel though the computer or other electronic device between the human brain and the external environment that does not depend on the peripheral nerve and muscle tissue. Firstly, this paper studies the methods of visual stimulation based on Brain Computer Interface that classified by stimulating form can be divided into flash simulation and figures simulation and classified by stimulating frequency can be divide into transient visual stimulation and steady-state visual stimulation. Then, using FPGA and the VGA interface designed of the visual stimulator that can be used to acquisition of steady-state visual evoked potential. Finally, adopting EEG signal processing platform verify this simulator. After numbers of verification, this simulator obtains a good desired result which achieved over 80% accuracy rate.

• Periodical: Applied Mechanics and Materials (Volume 734)
• Pages: 375-382
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.734.375
• Online since: February 2015
• Authors: Yong Sun*, Li Zhao, Neng Xu, Rong Ou
• Keywords: Brain-Computer Interface, FPGA, Visual Stimulator

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