⁷Actually, it has further been found that many of the same brain networks that are intermittently active in various neuroscience experiments are also intermittently active in resting-state. Thus, the default-mode network is not the only network activated in resting-state, but the default-mode network is perhaps the only one that is more active in resting-state than in any kind of stimulation or task. When we talk about a “network” here, we mean more precisely that the activity in the same sets of voxels (and, presumably, the same sets of neurons) seem to be fluctuating synchronously (Damoiseaux et al., 2006; Fox and Raichle, 2007). Typically the analysis is made using a machine learning method called independent component analysis (Hyvärinen et al., 2001). Possibly the first study to provide such a decomposition to several networks was in fact based on data from anaesthetized human children, whose brains were scanned for clinical purposes (Kiviniemi et al., 2003) .