Figure 2. Altered functional connectivity within the DAN among the four groups. (A) Spatial distribution of the DAN (FWE correction). (B) Regions showing altered functional connectivity between different groups. Abbreviations: DAN: dorsal attention network; IPL: inferior parietal lobule; SMG: supramarginal gyrus; AD: Alzheimer's disease; aMCI-s: single-domain of amnestic mild cognitive impairment; aMCI-m: multiple-domain of amnestic mild cognitive impairment; NC: normal controls.