A fourth key issue pertains to our finding that SZ exhibit greater connectivity at rest compared to not only NC but also BP. Given that EEG was recorded during rest as opposed to a cognitive task, the increased coherence suggests that SZ tend to expend energy in potentially excessive or inefficient neural processing. Although overall coherence values in our study were low, our finding of differences in resting connectivity between SZ and NC are consistent with previous reports (e.g. Mann et al. 1997; Nagase et al. 1992; Wada et al. 1998; Yeragani et al. 2006). Also in line with our results, a recent study showed greater coherence activity within the frontal regions of the DMN in SZ relative to BP (Ongür et al. 2010). Of importance, the electrophysiological abnormalities in neural connectivity we report are consistent with the structural and functional anomalies observed in SZ. For example, an increased number of long distance white matter tracts (Hubl et al. 2004) as well as greater functional connectivity within the DMN at rest (Whitfield-Gabrieli et al. 2009; Wolf et al. 2011) have
