Fig. 3

SPM maps showing the results of correlation analyses in both groups. In the diabetes group, the following brain regions show significant correlation with the pre-PET glucose level. a Precuneus/posterior cingulate gyrus. b Left posterior orbital gyrus. c Right calcarine cortex. d Right orbital part of the inferior frontal gyrus. e In the obese group, the right central operculum (right rolandic pericentral operculum). SPM maps were thresholded at FWE-corrected P<0.05 at the cluster level using k=40 spatial extend threshold. The colour scales demonstrate the t values above the applied P_FWE<0.05 statistical threshold