Comparisons of the global network measures among the AD, aMCI and NC groups at sparsity of 10%.

Values are represented as the mean (S.D.). For each participant, two functional connectivity networks were obtained via different parcellation scales (low: 90×90, and high: 1024×1024). The comparisons of the integrated global network measures among the three groups (AD, aMCI, & NC) were estimated using ANOVA. The bivariate correlation of the network metrics with MMSE was performed using Pearson’s correlation.*Post hoc test showed significant group difference between control v.s. aMCI;†Post hoc test showed significant group difference between control v.s. AD;Post hoc pairwise comparison was performed through Fisher’s least significant difference (LSD) and pBold data indicates statistical significance.