IEEE Trans Biomed Circuits Syst. 2010 Apr;4(2):125-32. doi: 10.1109/TBCAS.2010.2042595.
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.
本文提出了一种低成本的现场可编程门阵列 (FPGA) 为基础的脑机接口 (BCI) 多媒体控制系统，与使用笨重和昂贵的脑电图 (EEG) 测量设备、个人计算机和商业实时信号处理软件的 BCI 系统不同。该系统结合了定制的刺激面板、脑波采集电路和基于 FPGA 的实时信号处理器，允许用户使用自己的脑波与多媒体设备进行通信或自行控制多媒体设备。本研究还设计了一个发光二极管刺激面板，代替现有研究中使用的阴极射线管或液晶显示器，以产生更强的稳态视觉诱发电位 (SSVEP)，一种 EEG，作为所提出的 BCI 系统的输入信号。实现基于 SSVEP 的 BCI 多媒体控制系统的原型验证了所提出系统的有效性。实验结果表明，通过所提出的 BCI 系统，受试者的 SSVEP 可以成功地以高识别精度控制多媒体设备。
