The Efficiency of a Small-World Functional Brain Network  

作　　者：ZHAO Qing-Bai ZHANG Xiao-Fei SUI Dan-Ni ZHOU Zhi-Jin CHEN Qi-Cai TANG Yi-Yuan 赵庆柏;张小菲;隋丹妮;周冶金;陈其才;唐一源(Key Laboratory of Adolescent Cyberpsychology and Behavior(Ministry of Education),and Hubei Human Development and Mental Health Key Laboratory,School of Psychology,Central China Normal University,Wuhan 430079;Foreign Language College,Shenyang University,Shenyang 110044;College of Life Science,Central China Normal University,Wuhan,430079;Institute of Neuroinformatics and Laboratory for Brain and Mind,Dalian University of Technology,Dalian 116024;Department of Psychology,University of Oregon,Eugene,OR 97403,USA)

机构地区：[1]Key Laboratory of Adolescent Cyberpsychology and Behavior(Ministry of Education),and Hubei Human Development and Mental Health Key Laboratory,School of Psychology,Central China Normal University,Wuhan 430079 [2]Foreign Language College,Shenyang University,Shenyang 110044 [3]College of Life Science,Central China Normal University,Wuhan,430079 [4]Institute of Neuroinformatics and Laboratory for Brain and Mind,Dalian University of Technology,Dalian 116024 [5]Department of Psychology,University of Oregon,Eugene,OR 97403,USA

出　　处：《Chinese Physics Letters》2012年第4期236-239,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60971096,31070971 and 30970972;the Social Science and Humanities Research Youth Foundation Project of the Educational Ministry of China under Grant No 10YJCXLX065;an Opening Project from Hubei Human Development and Mental Health Key Laboratory,Central China Normal University,under Grant No 201006.

摘　　要：We investigate whether the small-world topology of a functional brain network means high information processing efficiency by calculating the correlation between the small-world measures of a functional brain network and behavioral reaction during an imagery task.Functional brain networks are constructed by multichannel eventrelated potential data,in which the electrodes are the nodes and the functional connectivities between them are the edges.The results show that the correlation between small-world measures and reaction time is task-specific,such that in global imagery,there is a positive correlation between the clustering coefficient and reaction time,while in local imagery the average path length is positively correlated with the reaction time.This suggests that the efficiency of a functional brain network is task-dependent.

关 键 词：NETWORK EFFICIENCY SMALL 

分 类 号：TN9[电子电信—信息与通信工程]