脑-机接口中高性能虚拟键盘的实现

Implementation of Virtual Keyboard in Brain-Computer Interface with DirectX

给出了基于模拟阅读事件相关电位的脑 -计算机接口这种全新模式的方案 ,该方案的关键部分是虚拟键盘的界面 ,它提供了用户利用脑电信号输入字符所需的刺激 .在 Windows环境下 ,实现了这种新型高性能的虚拟键盘 .实测显示 ,36个键的视窗中的目标图像同时运动时 ,平滑稳定 ,无抖动现象 ;时间精度超过设计要求达到1 m

Brain computer interface based on event related potentials during imitated natural reading is a fully new mode. The critical part of the new solution is an interface called virtual keyboard which provides stimuli for user′s characters input. The paper introduces and implements the high performance virtual keyboard under Windows. When the virtual keyboard runs, the images in the 36 keys′ windows move smoothly, stably and simultaneously, and the time accuracy is over 1ms and achieves the requirement of the design.