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脑机接口中一种改进的模式识别方法 被引量:3

An Improved Pattern Recognition Method in Brain-Computer Interface(BCI)
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摘要 为提高脑机接口中脑电识别率,分析了特征提取方面时频特征组合法的缺点,探讨了一种改进的模式识别方法。该方法以样本类平均距离为判据,采用滑动窗优化技术,获取时域均值的最佳时间段和频域功率谱均值的最佳频率段。用经过优化的时域均值和功率谱均值组合作为特征,形成特征向量。基于该特征向量,用神经网络对脑电信号进行分类。以识别正确率为指标,将改进方法与原方法进行对比,实验结果表明改进方法能够提高脑电识别率,具有应用价值。
出处 《中国生物医学工程学报》 CAS CSCD 北大核心 2006年第2期234-237,共4页 Chinese Journal of Biomedical Engineering
关键词 脑机接口 脑电 滑动窗 模式识别 神经网络 brain-computer Interface (BCI) electroencephalography (EEG) sliding window pattern recognition neural network
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参考文献9

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