Figure 4. Weighted phase lag index (wPLI) of pairwise electrodes in the baseline and post-stimulation of the real stimulation. Pink lines show significantly (p<0.05, FDR correction) strengthened connectivity of T1 (left), T2 (middle) and T3 (right) in comparison with baseline. Blue areas show electrodes defined in the frontal region. The black dots at lower panel represented the electrodes that showed significant (p<0.05, FDR correction) difference of connectivity degree in time comparisons.