Fig. 6From: Can vibrotactile stimulation and tDCS help inefficient BCI users?Global PLVs before and after the stimulation. The figure represents the global PLVs averaged over the connections between the nine electrode channels’ (F3, Fz, F4, C3, Cz, C4, P3, Pz, and P4) changes after the stimulation session for low performers in each stimulation groupBack to article page