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Phys Rev Lett. 2005 Jan 14;94(1):018102. Epub 2005 Jan 6.

Scale-free brain functional networks.

Author information

1
Instituto Mediterráneo de Estudios Avanzados, IMEDEA, E07122 Palma de Mallorca, Spain.

Abstract

Functional magnetic resonance imaging is used to extract functional networks connecting correlated human brain sites. Analysis of the resulting networks in different tasks shows that (a) the distribution of functional connections, and the probability of finding a link versus distance are both scale-free, (b) the characteristic path length is small and comparable with those of equivalent random networks, and (c) the clustering coefficient is orders of magnitude larger than those of equivalent random networks. All these properties, typical of scale-free small-world networks, reflect important functional information about brain states.

PMID:
15698136
DOI:
10.1103/PhysRevLett.94.018102
[Indexed for MEDLINE]

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