Four studies (Andreescu et al., 2013; Li et al., 2013; Posner et al., 2013; Liston et al., 2014) found DMN hyperconnectivity in depressed patients with respect to the control subjects. In all of them, connectivity reductions were observed in DMN after the treatment (Li et al., 2013; Posner et al., 2013; Liston et al., 2014)

hyperconnectivity of DMN and the SN with CCN is related to rumination in depression (Jacobs et al., 2014).

It has been linked to self-reference processes and their alteration; while the pathological interactions of DMN with other networks such as the SN and the CCN would be linked to the states of pathological rumination frequently presented by depressed patients (Broyd et al., 2009; Belleau et al., 2014; Jacobs et al., 2014).