MCC represents emotional facial behaviors during specific trials. (a) Brow furrowing (AUs 4 and 6/7) during the disgust trial had a predominant representation in the right posterior MCC and bilateral precentral gyrus. Nose wrinkling and upper lip raising (AUs 9 and 10) were associated with bilateral aMCC. (b) Like nose wrinkling and upper lip raising during the disgust trial, smiling (AUs 12 and 6/7) during the amusement trial had a predominant representation in the left aMCC and bilateral SMA. The color bars display the T-scores at P < .005, uncorrected. Adobe Illustrator software was used to create the faces by manually tracing the anatomical drawing of facial muscles in the FACS manual, MRIcroGL software was used to illustrate the results on brain slices, and Affinity Designer was used to refine the final figure.