Spontaneous brain activity was mapped with functional MRI (fMRI) in a sample of 180
subjects while in a conscious resting-state condition. With the use of independent
component analysis (ICA) of each individual fMRI signal and classification of the ICA-
defined components across subjects, a set of 23 resting-state networks (RNs) was identified.
Functional connectivity between each pair of RNs was assessed using temporal correlation
analyses in the 0.01-to 0.1-Hz frequency band, and the corresponding set of correlation …

Brain activity at rest: a multiscale hierarchical functional organization. J Neurophysiol 105:
2753–2763, 2011. First published March 23, 2011; doi: 10.1152/jn. 00895.2010.—
Spontaneous brain activity was mapped with functional MRI (fMRI) in a sample of 180
subjects while in a conscious resting-state condition. With the use of independent
component analysis (ICA) of each individual fMRI signal and classification of the ICA-
defined components across subjects, a set of 23 resting-state networks (RNs) was identified …