Scale-free structure of brain functional networks

Preprint
Publisher Website
Google Scholar
  • 4 September 2003
Abstract
The dynamic interaction of brain regions, during behavior or even at rest, creates and continuously reconfigures complex networks of correlated dynamics. Using functional magnetic resonance imaging we studied the topological properties of these networks defined by the links between the highest correlated voxels. We report here that the degree distribution and the probability of finding a link vs. distance both decay as a power law. Furthermore the path length between any two sites is a relatively small value around 10. The clustering coefficient we find is several orders of magnitude larger than in the case of the equivalent random network and much larger than that of a null model with random rewiring. All these features are signatures of scale-free networks with small-world properties.

This publication has 0 references indexed in Scilit: