Figure 5

FFT analysis. (A–C) Comparison between the FFT obtained 20 min before the stimulation and the first 20 min after tDCS cessation (POST1, first column) or the next 20 min (POST2, second column) for cathodal (A), anodal (B) or sham (C) tDCS. Grey shadow represents statistical differences for a specific frequency (p < 0.05, permutations).