Fig. 2.

The regions of gray matter intensity that covaried with the mind wandering index in bvFTD and AD patients combined. Significant clusters were identified in the striatum (including caudate, putamen, and nucleus accumbens) and the anterior–mid thalamus, extending to the left subcallosal, medial/lateral orbitofrontal and anterior insular cortices; the left hippocampus, parahippocampal gyrus, and the left posterior insular cortex. Results are familywise error (FWE) corrected at P < 0.01; significant clusters identified using threshold free cluster enhancement.