that abnormalities in the interactions of network components play a critical role in common neuropsychiatric disorders ranging from depression to epilepsy (Mayberg et al., 2005; Lytton, 2008), and damage to specific functional connectivity networks can lead to distinct neurological syndromes (Seeley et al., 2009). Furthermore, the deficits and functional recovery after damage from strokes or traumatic brain injury may depend on the architecture and adaptability of these networks (He et al., 2007b; Ween, 2008; Kumar et al., 2009). Consequently, there is active research exploring functional connectivity in normal subjects and in patients suffering from various neuropsychiatric disorders, with the hope that it may lead to valuable biomarkers of disease and new therapeutic approaches.
