work suggests that much longer scans (on the order of 8–12 min) are required for stability and reproducibility of network measurements. These two limitations (eyes closed vs. eyes open and length of EEG and fMRI acquisition) underscore that our major limitation is that the fMRI and EEG were not obtained simultaneously. Ideally, we would use simultaneous recording of EEG and rs-fMRI to identify EEG indices that vary on a moment-to-moment basis in conjunction with rs-fMRI. Despite these limitations, our results offer the hope that EEG analogues of rs-fMRI networks can be identified, and in the future may be used in a relatively low-cost neurofeedback approach for treatment of alcoholics.
