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Development of a Low-Cost FPGA-Based SSVEP BCI Multimedia Control System

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6 Author(s)
Kuo-Kai Shyu ; Dept. of Electr. Eng., Nat. Central Univ., Jungli, Taiwan ; Po-Lei Lee ; Ming-Huan Lee ; Ming-Hong Lin
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This paper proposes a low-cost field-programmable gate-array (FPGA)-based brain-computer interface (BCI) multimedia control system, different from the BCI system, which uses bulky and expensive electroencephalography (EEG) measurement equipment, personal computer, and commercial real-time signal-processing software. The proposed system combines a customized stimulation panel, a brainwave-acquisition circuit, and an FPGA-based real-time signal processor and allows users to use their brainwave to communicate with or control multimedia devices by themselves. This study also designs a light-emitting diode stimulation panel instead of cathode ray tube or liquid-crystal display used in existing studies, to induce a stronger steady-state visual evoked potential (SSVEP), a kind of EEG, used as the input signal of the proposed BCI system. Implementing a prototype of the SSVEP-based BCI multimedia control system verifies the effectiveness of the proposed system. Experimental results show that the subjects' SSVEP can successfully control the multimedia device through the proposed BCI system with high identification accuracy.

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Biomedical Circuits and Systems, IEEE Transactions on  (Volume:4 ,  Issue: 2 )