The efficiency of a small-world functional brain network

Qing Bai Zhao, Xiao Fei Zhang, Dan Ni Sui, Zhi Jin Zhou, Qi Cai Chen, Yi Yuan Tang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageEnglish (US)
Article number048702
JournalChinese Physics Letters
Issue number4
StatePublished - Apr 2012
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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