Figure 6.
ROI volumes. The mean volumes (mm3) normalized by the total intracranial cavity volume of each monkey (Wisco et al., 2008) for (A) area 11/13 of OFC, (B) area 14 of OFC, (C) CM nuclei group of the amygdala, and (D) BL nuclei group of the amygdala for the left and right hemispheres in young (dark gray) and old (light gray) monkeys. Both areas 11/13 and 14 of the OFC were significantly reduced in the aged compared with the young monkeys (p < 0.05 for all comparisons). There were no significant differences in mean volume of either amygdala group between young and old animals (p > 0.7 for all comparisons). Error bars indicate ± SEM. *p < 0.05.