Scatter plots of the GMVs of the SN regions versus MMSE scores. Abbreviations: AD, Alzheimer's disease; aMCI, amnestic mild cognitive impairment; dACC/MPFC, dorsal anterior cingulate cortex/medial prefrontal cortex; DLPFC, dorsolateral prefrontal cortex; FIC, frontoinsular cortex; GMV, gray matter volume; HOC, healthy older control; L, left; MMSE, Mini‐Mental State Examination; pr, partial correlation coefficients; R, right; SN, salience network.