Fig. 5

Average activation amplitude (mean ± SE) in the A left superior parietal cortex (L. SPC) and B left inferior parietal cortex (L.IPC). Two-way ANOVA revealed a significant interaction effect (P = 0.041), as well as significant main effects of group (P < 0.001) and condition (P = 0.045) in the L. SPC, and a significant main effect of condition (P = 0.001) in the L. IPC. Significance in the test of simple main effects of L.SPC is further displayed on the plot, where * represents P < 0.05, ** represents P < 0.001, and *** represents P < 0.001