Fig. 4

Correlation between subscales of alexithymia and functional connectivity between the right insular cortex and left anterior cingulate cortex. On the left, a scatter plot shows the correlation between TAS-20 DIF score and the functional connectivity between the right insula and the left anterior cingulate cortex. On the right, a scatter plot shows the correlation between TAS-20 DDF score and the functional connectivity between the same regions. Both DIF and DDF scores showed a significant negative correlation with functional connectivity. (DIF: r[40] = 0.53, p = 0.0008, FDR corrected; DDF: r[40] = 0.45, p = 0.0094, FDR corrected) TAS-20 = The 20-item Toronto Alexithymia Scale; DIF = Difficulty Identifying Feeling subscale; DDF = Difficulty Describing Feelings subscale; FDR = false discovery rate; ROI = region of interest; R.INS = right insula; L.ACC = left anterior cingulate cortex