Figure 4. Topographic Distribution of Atrophy in Amnestic and Behavioral/Dysexecutive (b/d) Variants of Alzheimer Disease (AD).
(A) Strongest associations between voxel-based morphometry (VBM) and amnestic AD were observed in lateral temporal, inferior parietal, precuneus, and posterior cingulate cortices. (B) Strongest associations between VBM and behavioral/dysexecutive AD were observed in the lateral temporal, inferior parietal, dorsolateral, and medial prefrontal cortices. (C, D) t Maps displaying no statistically significant differences between patients with behavioral/dysexecutive AD and amnestic AD. t Statistical parametric maps were corrected for multiple comparisons using a random field theory cluster threshold of p < 0.001. Age, sex, and Mini-Mental State Examination were employed as covariates in each model. CU = cognitively unimpaired.