Comparative Study on Fractal Dimension Property of 40Hz Event-Related Potentials Under Various Cognitive Tasks Loading Conditions

作     者：ZHANG Zuo sheng 1,PENG Hu 1,WEI Yong mei 2[WT4”BZ] 1.Institute of Biomedical Engineering of USTC,Hefei 230026,China 2.Physics Department of Fuyang Teachers College[WT5HZ] 

出 版 物：《Chinese Journal of Biomedical Engineering》 (中国生物医学工程学报(英文版))

年 卷 期：2000年第3期

页      面：135-140页

摘      要：The fractal dimension property of 40Hz event related potentials(ERPS) is studied for tests of Chinese word short term memory recognition, mental arithmetic calculation and short term memory capacity. By comparison it is found that there is a remarkable difference in the fractal dimensions of 40Hz ERPS for different cognitive tasks. Meanwhile, for the identical cognitive process, there is a distinct hemispheric difference in fractal dimension property of 40Hz ERPS, which indicates that there exists a noticeable difference in the property of brain dynamical between the two hemispheres under different cognitive tasks.