Figure 2.

Comparison of standard alpha power between stimulation and sham conditions for Group Small and Group Large. (A) For Group Small, alpha power differed significantly at Pz and P4 and showed a tendency to differ at Cz and P3. When data for all three parietal electrodes were pooled alpha power in the stimulation condition was likewise decreased in sham (p = 0.029). (B) For Group Large there were no significant differences between conditions. For clarity temporal sites (T5, T6) are not shown. Each box plot shows the median as the horizontal line, with the bottom and top whiskers representing 10th and 90th percentiles, respectively. Circles represent the individual subject. * p < 0.05; t p < 0.10.