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| 基于小波变换的听觉脑机接口技术研究 | |
| 引用本文： | 郭苗苗,徐桂芝,王磊,王江. 基于小波变换的听觉脑机接口技术研究[J]. 中国生物医学工程学报, 2011, 0(5). DOI: 10.3969/j.issn.0258-8021.2011.05.004 |
| 作者姓名： | 郭苗苗 徐桂芝 王磊 王江 |
| 作者单位： | 河北工业大学电气工程学院生物医学工程系,天津,300130 |
| 摘 要： | 基于听觉的脑机接口系统为视力减退或者无法控制眼球运动的闭锁综合症患者提供了一种新的交流通道,使其可以与外界环境进行简单的交流.为了实现在线二分类听觉脑机接口系统,采用包含两种靶刺激、一种非靶刺激的三音oddball范式作为听觉刺激,通过一维离散小波变换对所得脑电数据进行单次样本特征提取,选取低频的特征向量,并采用支持向量机(SVM)进行目标与非目标的识别.结果表明,利用小波变换可以有效地单次提取特征向量P300,相当于20次靶刺激响应的叠加结果,最终目标识别正确率可高达80％以上,达到与视觉诱发的BCI模式可比的效果,可以用于二分类的脑机接口系统. |
| 关 键 词： | 脑机接口 P300 小波变换 支持向量机 |
Research on Auditory BCI Based on Wavelet Transform |
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| GUO Miao-Miao,XU Gui-Zhi,WANG Lei,WANG Jiang. Research on Auditory BCI Based on Wavelet Transform[J]. Chinese Journal of Biomedical Engineering, 2011, 0(5). DOI: 10.3969/j.issn.0258-8021.2011.05.004 | |
| Authors: | GUO Miao-Miao XU Gui-Zhi WANG Lei WANG Jiang |
| Affiliation: | GUO Miao-Miao1 XU Gui-Zhi1* WANG Lei1 WANG Jiang 1(School of Biomedical Engineering,Hebei University of Technology,Tianjin 300130,China) |
| Abstract: | Auditory brain-computer interfaces(BCIs) provide a means of non-muscular communication for locked-in state(LIS) patients who have compromised vision or lose the control of their eye movement.In this paper,an auditory BCI based on a three-stimulus oddball paradigm was evaluated to make an online binary decision.One-dimensional discrete wavelet transform(DWT) method were used to reduce noise and extract low-frequency feature.The target and non-target stimuli were classified by support vector machines(SVM).Exp... |
| Keywords: | brain-computer interface auditory P300 wavelet transform SVM |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |