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An Optimized BCI System Based on P300 and Visual Mismatch Negativity

机译:基于P300和视觉失配负值的优化BCI系统。

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This paper presents a brain-computer interface (BCI) in which the face paradigm was optimized for the visual mismatch negativity (MMN). There were 12 cells in a LCD monitor. A single letter was at the bottom of each cell. In the new paradigm, a color face appeared above each of the 12 cells randomly while the gray faces appeared in others 11 cells. A traditional face paradigm with single character pattern was compared. Three healthy subjects participated in the experiment. Results showed that the new paradigm elicited larger N200 and N400 components than traditional face paradigm and had better performance in online session. The results demonstrated the advantages of the new paradigm in our P300 speller system.
机译:本文提出了一种脑机接口(BCI),其中人脸范型针对视觉失配负值(MMN)进行了优化。液晶监视器中有12个单元。每个单元格的底部都有一个字母。在新范式中,有色面孔随机出现在12个单元格的每一个上方,而灰色面孔则出现在其他11个单元格中。比较了具有单个字符模式的传统人脸范例。三名健康受试者参加了实验。结果表明,与传统的面孔范例相比,新范例引发了更大的N200和N400组件,并且在在线会话中具有更好的性能。结果证明了新范式在我们的P300拼写系统中的优势。

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