Fig. 2: Fearful and angry MMN.

a Fearful and angry MMN were derived by subtracting neutral ERPs from fearful and angry ERPs, respectively. b eMMN was statistically identified by using a mixed ANOVA comprising gender (male or female) as the between-subjects factor, and the deviant type (fearful or angry), coronal site (left, midline, right) and anterior–posterior site (frontal or central) as the within-subjects factors. Fearful MMN (2.66 ± 0.27 μV, P = 0.015) exhibited significant higher amplitudes than angry MMN (2.09 ± 0.26 μV) in frontal electrodes but not in central electrodes (fearful MMN: 2.29 ± 0.23 μV; angry MMN: 2.15 ± 0.2 μV, P = 0.475). Whisker boundaries were set as box edge ± 1.5 interquartile range (IQR). Source data are presented in Supplementary Data 1.