The Efficiency of a Small-World Functional Brain Network

ZHAO Qing-Bai; ZHANG Xiao-Fei; SUI Dan-Ni; ZHOU Zhi-Jin; CHEN Qi-Cai; TANG Yi-Yuan

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The Efficiency of a Small-World Functional Brain Network

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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.%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 event-related 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.

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《中国物理快报：英文版》 |2012年第4期|236-239|共4页
作者
ZHAO Qing-Bai; ZHANG Xiao-Fei; SUI Dan-Ni; ZHOU Zhi-Jin; CHEN Qi-Cai; TANG Yi-Yuan;
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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;

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;

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;

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;

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The Efficiency of a Small-World Functional Brain Network

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