Figure 1.

Gray matter structural networks and associations with age. (A) Overview of the nine anatomical networks based on the covariation of gray matter volumes among middle-aged to older adults. Networks are overlaid on the most informative coronal, sagittal, and transverse slices of the MNI-152 standard anatomical image. (B) The association between age and gray matter volume in the anatomical networks is illustrated by bar graphs. Error bars indicate the standard error of the mean. Age was negatively associated with gray matter volume in network a–d and was not significantly associated with gray matter volume in network e–i.