Figure 1
MMN waveforms. The graph represents MMN differential waveforms obtained by subtracting average responses to standard sounds from response elicited by deviant sounds at Fz. Coherently with previous studies the negative peak of MMN waveforms is frontally distributed and occurs at around 170 ms post-onset. Blue and red lines correspond to the Physical and Virtual scenario, respectively. Solid and dashed lines represent MMN corresponding to the Other and Solo conditions, respectively. The grey shaded area at 152–182 ms, corresponding to the MMN peak latency, represents the significant cluster surviving cluster correction in the point-by-point ANOVA and evidencing a significant main effect of experimental conditions Other vs. Solo. The grey line at the bottom depicts the corresponding F-values, showing a peak effect of condition corresponding to the MMN negative peak latency. Scalpmaps at the top represent the MMN amplitude distribution across the scalp for each single experimental condition. The scalpmap at the bottom shows cluster-corrected p-values corresponding to the main effect of co-presence (Solo vs. Other) resulting from the point-by-point ANOVA. The resulting significant cluster (152–182 ms) is localized over frontal electrodes overlapping the MMN scalp distribution.
