Brain regions of relative atrophy of AD patients with hallucinations compared to healthy controls (A and B left) and AD patients without hallucinations compared to healthy controls (A and B right).

<p>Brain regions of relative hypometabolism of AD patients compared to healthy controls (C). (A: for gray matter only: T = p<0.05, correction FWE, minimum cluster size = 25 voxels; B: T = p<0.001, without correction, minimum cluster size = 25 voxels; C. T = p<0.001, without correction, minimum cluster size = 25 voxels) A. The relative atrophy involves hippocampi and amygdalas for the two AD groups, for the analysis with correction. B. The relative atrophy of gray matter (red) and white matter (yellow) involves also input and output pathways of the hippocampi including amygdalas, entorhinal cortex, fornix, thalami and cingulate gyrus. C: Relative hypometabolism (FDG PET) of AD-hallu (left) and AD-c (right) compared to healthy controls. Right is right.