Voxel-wise whole brain correlation for maxinc_d and the corresponding difference image (stress – control). PET data are shown for p = 0.005 uncorrected. Clusters are reported for k > 10. Analysis was restricted to prefrontal areas (y ≥ 9). Regions of interest were drawn on the basis of the activated cluster and glucose metabolic rates for BA9 and BA10 were extracted for each participant and plotted against each participant’s maxinc_d score. (BA 9: x, y, z: 6, 58, 36; r = − 0.75; p = 0.002; BA 10: x, y, z: 6, 72, 6: r = − 0.80; p = 0.001)