(a) Subject 1 (PA, Cz-P3)
(b) Subject 2 (FES, C3-P3)
(c) Subject 4 (NA, C3-F3)
(d) Subject 5 (FES, C3-F3)
(e) Subject 6 (FES, C3-F3)
Figure 4: Accuracy and ErCoh (average among trials, error bars indicate the confidence interval) for the cases in which subjects showed an increment on ErCoh in the contralateral centrofrontal or centroparietal areas.