Scherer Reinhold, Müller Gernot R, Neuper Christa, Graimann Bernhard, Pfurtscheller Gert
Institute of Human-Computer Interfaces, Graz University of Technology, 8010 Graz, Austria.
IEEE Trans Biomed Eng. 2004 Jun;51(6):979-84. doi: 10.1109/TBME.2004.827062.
An improvement of the information transfer rate of brain-computer communication is necessary for the creation of more powerful and convenient applications. This paper presents an asynchronously controlled three-class brain-computer interface-based spelling device [virtual keyboard (VK)], operated by spontaneous electroencephalogram and modulated by motor imagery. Of the first results of three able-bodied subjects operating the VK, two were successful, showing an improvement of the spelling rate sigma, the number of correctly spelled letters/min, up to sigma = 3.38 (average sigma = 1.99).
提高脑机通信的信息传输速率对于创建更强大、更便捷的应用程序是必要的。本文提出了一种基于异步控制的、由自发脑电图操作并由运动想象调制的三类脑机接口拼写设备[虚拟键盘（VK）]。在三名健全受试者操作VK的初步结果中，有两名取得了成功，拼写速率σ（每分钟正确拼写字母的数量）提高到了σ = 3.38（平均σ = 1.99）。
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