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. 2021 Sep 10;118(37):e2100652118. doi: 10.1073/pnas.2100652118

Fig. 2.

Fig. 2.

EEG time-frequency responses in the beta band in frontocentral sites for Go and No-Go trials (n = 33). (A and B) EEG time-frequency responses (TFR) in the beta band (15 30 Hz) in frontocentral sites (C4, CZ, FC2, CP2, FCZ, C1, C2, FC4, CP4, and CPz; electrodes highlighted in white in Top Right topoplot) time locked to the onset of the Go/No-Go stimuli, computed as (A) the difference between Expression and Baseline blocks, (B) the mean of Baseline and Expression blocks collapsing across groups A + B. While B shows the PMBR effect was especially prominent in the Go trials, A illustrates how this changed as a function of the two types of ccPAS used in groups A and B. The dashed red square in A indicates the time window (0.7 to 1.2 s) in which significant modulation in beta responses after ccPAS were found. Dashed red line in B indicates the mean RT across Baseline and Expression for Go trials in both participant groups (mean = 352.36 s). (C) Mean beta frequency increase (PMv – M1 ccPAS) and decrease (M1 − PMv ccPAS) computed as the difference between Expression and Baseline in Go trials in the 0.7- to 1.2-s time window. Error bars represent SEM, single dots represent individual data points. In A, EEG TFR represent percentage change in power computed by subtracting the Baseline from the Expression block (0 = no percentage change). In C, EEG TFR represent relative percentage change in power with respect to the prestimulus interval (1 = no percentage change).