思维脑电信号的近似熵分析  

Approximate Entropy Analysis on the Electroencephalogram Signal Evoked by Mental Tasks

作　　者：蔡超峰[1] 郭淑婷[1] 任景英[1] 姜利英[1] 

机构地区：[1]郑州轻工业学院电气信息工程学院,郑州450002

出　　处：《河南师范大学学报（自然科学版）》2012年第5期50-53,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金(61002007);郑州轻工业学院博士科研基金项目(2011BSJJ007)

摘　　要：计算了5种不同思维作业时脑电信号的近似熵.计算结果表明,当进行不同思维作业时脑电数据的近似熵存在着较大的差异.这提示可以利用近似熵作为思维脑电信号的特征实现对思维作业的分类.对于不同的受试者,即使是同一种思维作业、同一个电极上脑电数据的近似熵也存在着较大的差异.这提示在利用近似熵作为思维脑电信号的特征对心理作业进行分类时应当充分考虑不同受试者的个体差异.Approximate entropy of the electroencephalogram（EEG） signal recorded at five different mental tasks is calculated in this paper.The results indicate that the approximate entropy of EEG signal vary greatly when different mental tasks are implemented,which implies that the approximate entropy can be employed as a feature of EEG signal to distinct different mental tasks.For different subjects,the approximate entropy still vary greatly even when the EEG signal are recorded from the same electrode under the same mental task,which implies that the individual differences should be considered fully when the approximate entropy is employed to distinct different mental tasks.

关 键 词：脑电信号 近似熵 思维作业 

分 类 号：R318.04[医药卫生—生物医学工程]