Figure 2

Flow diagram of the employed methodology to assess the functional connectivity in the assessed transitions. Preprocessing—The artifacts are removed from the EEG signals, and their source-level time courses are reconstructed. Segmentation—The signals are segmented between − 3 and + 8 s, with the 0 s being the moment when the transition between conditions is indicated. Estimation of the FC—For every trial (extracted in the previous step), and band (alpha and beta) the FC is estimated by means of PLI metric employing a 500 ms sliding window with an overlapping of 50%.