only marginally significantp = 0.10
In addition, while the Group × Block interaction was only marginally significant ( F (3,63) = 2.17, p = 0.10), both the increase in N400 from Block 1 to Block 2 and the decrease from Block 2 to Block 3 were significant for MUS (Block 1: −2.79 μV, SD = 1.66; Block 2: −5.46 μV, SD = 2.10; Block 3: −2.23 μV, SD = 2.04; Tukey, 1 vs. 2: p = 0.02, and 2 vs. 3: p = 0.005; main effect of Block: F (3,33) = 5.34, p = 0.004) but not for NM (main effect of Block: F (3,30) = 1.13, p = 0.35; see Figures 4A,B for topographic distributions of effects).