Figure 3.
Longitudinal plots of cortical volumes as a function of age at the time of the MRI scan. Volumes are adjusted for the intracranial volume (see text for details). Unconnected observations are the data points acquired only at baseline. The plot for the hippocampal volume does not show an outlier that was removed without any effect on the results as specified in the Results section, thus reducing the number of plotted baseline observations to N = 166 but keeping follow-up observations at N = 90.