Application of EEG non-linear analysis in mental arithmetic and orientation
- VernacularTitle:脑电非线性分析在心算和定向研究中的应用
- Author:
Xueli CHEN
;
Bin YAO
;
Dongning WEI
;
Dongyu WU
;
Ling YIN
- Publication Type:Journal Article
- Keywords:
electroencephalogram (EEG), non-linear dynamics, cognitive function
- From:
Chinese Journal of Rehabilitation Theory and Practice
2005;11(12):978-980
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the changes of non-linear dynamics characteristic of electroencephalogram (EEG) under three states (eyes closed, mental arithmetic with eyes closed and orientation test with eyes closed), and the application of non-linear dynamic analysis for cognitive function research.MethodsEEG was recorded in 30 healthy young volunteers at three stages. The correlation dimension (D2) and approximate entropy (ApEn) were calculated for all subjects.ResultsD2 and ApEn increased significantly during mental tasks as compared to the rest state with eyes closed (P<0.01). In different mental tasks, the complexity of mental functions and the regions involved in the cognitive task were different.ConclusionNon-linear analysis methods are appropriate for the study of cognitive functions and can help to understand the working mechanism of brain during mental activities.
