Adaptive reconfiguration of fractal small-world human brain functional networks.

ABSTRACT: Brain function depends on adaptive self-organization of large-scale neural assemblies, but little is known about quantitative network parameters governing these processes in humans. Here, we describe the topology and synchronizability of frequency-specific brain functional networks using wavelet decomposition of magnetoencephalographic time series, followed by construction and analysis of undirected graphs. Magnetoencephalographic data were acquired from 22 subjects, half of whom performed a finger-tapping task, whereas the other half were studied at rest. We found that brain functional networks were characterized by small-world properties at all six wavelet scales considered, corresponding approximately to classical delta (low and high), , alpha, beta, and gamma frequency bands. Global to

SUBMITTER: Bassett DS 

PROVIDER: S-EPMC1838565 | biostudies-literature | 2006 Dec

REPOSITORIES: biostudies-literature