Fig. 6

Box plots display unadjusted frontoparietal theta phase coherence during a 1-back and b 2-back loads. Mid-left (mid-frontal–left-parietal), midline (mid-frontal–mid-parietal), and mid-right (mid-frontal–right-parietal). (Crossbars represent the median, dots represent the mean, upper and lower hinges correspond to the 1st and 3rd quartile, respectively, and whiskers represent the range of the data. *significant main effect of group averaged over region and load)