Fig. 3

PCUN.L-ROI FC results among AD, MCI, and NC. Post hoc comparisons of analysis of covariance. The connection between two bars represents significant between-group differences (*denotes a significant level of P < 0.05, **denotes a significant level of P < 0.01, and ***indicates a significant level of P < 0.001, Bonferroni correction). (A) Differences among the AD, MCI, and NC; (B) Post hoc comparisons between AD, MCI, and NC. PCUN.L left precuneus, ROI region of interest, FC functional connectivity, Cere8.L left lobule VIII of cerebellar hemisphere, Cere6.R right lobule VI of cerebellar hemisphere, PCUN.R right precuneus, SFGmed.R right superior frontal gyrus, medial, NC normal controls, MCI mild cognitive impairment, AD Alzheimer’s disease.