Table 3. Spatial distribution of correlation of WMH volume with brain functional MRI activation during sDSST task performance.
Regions that show correlation between the structural measure (WMH measure) and task (sDSST > control condition) adjusted for atrophy index and group assignment, including the size of cluster, the maximum Z statistic for the cluster and the location of the maximum Z statistic in Talairach coordinates. The corrected alpha is the probability of a false positive detection based on the combination of individual voxel probability thresholding and minimum cluster size thresholding.
| Regions | Cluster Size |
Peak Z- Score |
Talairach Coordinate for Peak Z-Score |
|---|---|---|---|
| Regions Negatively Correlated with WMH burden | |||
| Left anterior cingulate cortex | 524 | 4.05 | −3.96, −1.25, 52.561 |
| Right anterior cingulate cortex | 561 | 3.95 | 19.8, −17.58, 36.82 |
| Left prefrontal cortex | 885 | 4.19 | −23.76, −7.61, 41.833 |
| Right prefrontal cortex | 1976 | 4.63 | 29.7, −9.55, 41.934 |
| Regions positively correlated with WMH burden | |||
| No significant voxels | |||
This cluster had its peak in the left medial frontal gyrus (BA 6) covered the cingulate gyrus (BA 24, 32) and superior frontal gyrus (BA 6).
This cluster had its peak in the right cingulate gyrus (BA 24, 32) extended to medial frontal gyrus and superior frontal gyrus (BA 6).
This cluster had its peak in the left middle frontal gyrus and covered the sensori-motor cortex (pre- and post-central gyri: BA 3, 40, 43, 44).
This cluster had its peak in the right middle frontal gyrus (BA 6) covered the sensori-motor cortex (pre- and post-central gyri: BA 3, 4, 6, 40, 43, 44), superior frontal gyrus (BA 6) and superior temporal gyrus (BA 42).