Volumes of regions of interests (corrected for eTIV) over time and age. All regions had a significant interaction of group by time. (a) Brainstem, (b) Ventral pons, (c) Cerebellar white matter, (d) Cerebellar gray matter, and (e) Thalamus. Freesurfer-derived volume is on the Y-axis and age is on the X-axis. Markers connected by a line denote age at each session for an individual over time. Open markers represent controls while solid markers represent Wolfram participants.