脑-机接口信号预处理中的高提升滤波

High-Frequency-Emphasis for Signal Preprocessing in Brain-computer Interface

为突出脑 -机接口中局部脑电的事件相关去同步信号 ,将算法简单的高提升滤波 (high_frequency_emphasis ,HFE)用于信号的数据预处理。分析结果表明 ,采用适当放大系数的高提升滤波比Laplacian滤波的效果更好。用HFE可有效地提高脑 -机接口系统的识别率。

To emphasize local event-related-desynchronization signal of EEG-based brain-computer interface (BCI), the simple algorithm--high-frequency-emphasis (HFE) was applied for data preprocessing. The results demonstrated that the performance of HFE with appropriate parameter was better than that of Laplacian. HFE can increase the prediction accuracy of BCI system effectively.