Figure 4.

Effects of the EEG reference choice on alpha-beta bicoherence patterns estimated from resting state EEG data. Main diagonal: maps of the average bicoherence across subjects obtained for the different EEG reference schemes. Off-diagonal: maps of t-values for pairwise contrasts between bicoherence maps from different EEG reference schemes using a paired-sample t-test; the black crosses mark the channels showing significant differences at the p < 0.05 level (two-tailed) based on a permutation test (10,000 randomizations).