Regional and network relationship in the intracranial eeg second spectrum

There is considerable interest in understanding the correlation in activity between different brain regions. Several fMRI studies have described a number of resting state networks (RSNs), distant brain areas that show relatively high correlation in blood-oxygen-level dependent (BOLD) signal while the patient is in a resting state (Biswal et al., 1995). A resting state network (RSN) that is of particular interest is the default mode network (DMN), which has been linked in fMRI studies to cognitive processes during "rest." The DMN is proposed to include the medial prefrontal cortex (MPFC), posterior cingulate cortex (PCC), and retrosplenial cortex (RCC) (Raichle et al., 2001).

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