FMRI Activation results by age group and WMH volume.

<p>(a) Activation for older adults for <i>set level</i> search contrast; clusters labeled as significant if passing a <i>p</i> <. 001 uncorrected voxel height threshold with 10 voxel cluster extent. (b) <i>Set level</i> activation significantly associated with white matter hyperintensity volume among OA; clusters labeled as significant if passing a <i>p</i> <. 005 uncorrected voxel height threshold with 10 voxel cluster extent. The significant cluster (28 voxel extent, peak voxel Montreal Neurological Institute coordinates = 36, 5, 52) is located in right middle frontal gyrus (Brodmann area 6).