西安交通大学生物医学信息工程教育部重点实验室,西安,710049
网络首发:2008-06-09,
纸质出版:2008
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裴晓梅, 郑崇勋, 徐进. 基于信息积累技术的大脑运动意识任务分类[J]. 西安交通大学学报, 2008,42(6):756-759.
裴晓梅, 郑崇勋, 徐进. Classification of Motor Imagery Tasks with Information-Accumulated Technique[J]. 2008, 42(6): 756-759.
提出了将信息积累技术结合Fisher判别式分析的方法
实现大脑想象左右手运动意识任务的连续分类
获得了满意的结果.利用Morlet小波滤波方法提取优化的运动相关脑电特征
对两组实验数据4个受试者的运动相关脑电模式进行分类
平均最大分类正确率达到87.95%.通过最大分类正确率、最大互信息等评价指标的比较
验证了信息积累技术对改善大脑运动意识任务分类性能的有效性
从而为脑机接口系统应用中大脑运动意识任务分类提供了新的思路.
The information-accumulated technique combined with Fisher discriminant analysis is proposed to realize the classification of left and right hand motor imagery tasks
and a satisfactory result is found. By Morlet wavelet filter to extract the optimized movement-related electroencephalogram(EEG)features
the movement-related EEG patterns from two groups of experiment data including 4 subjects are recognized and the average maximum classification accuracy reaches to 87.95%. With the two indexes
i.e. maximum classification accuracy and mutual information(MI)
the effectiveness of information-accumulated technique is verified to provide a new idea for identification of motor imagery tasks in brain-computer interface application.
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