Fig. 3

a Scalp topographies of “global coupling” showing correlations between activity in the region showing the maximum relative power of activity in the theta, and lower and upper alpha power bands defined as the average of the power in that region of electrodes clusters (marked with *) and gamma power in all other electrodes for FXS and healthy control participants. Significant group differences are presented in the bottom row (p < 0.05, corrected), with dark blue reflecting no group difference. b Mean and standard error of correlations for all electrodes showing group differences as are plotted in A. Asterisk denotes correlations of spectral power in theta and upper alpha bands with gamma band power that are significantly different from zero based on the results of permutation analyses at p < 0.05