208 Chapter 7 Table 2: Continued. Contrast Anatomical regions (AAL atlas) Anatomical regions (Brodmann+ atlas) Cluster size Peak Z-value P-value (FWE) x, y, z Middle frontal gyrus (R) Area 10 (R) 32 6.86 < 0.0005 26, 54, 18 Putamen (L) - 31 6.36 < 0.0005 -22, 2, 4 Inferior orbitofrontal gyrus (L) Insula (L) - 25 8.15 < 0.0005 -40, 20, -8 Putamen (L) - 22 6.57 < 0.0005 -32, -18, 0 Inferior parietal gyrus (L) - 22 6.04 < 0.0005 -28, -54, 52 Inferior occipital gyrus (R) Area 19 (R) 22 5.70 0.001 44, -82, -10 Baseline > Task No significant findings Significant activation differences between groups in the time-on-task within higher difficulty level blocks. Analyses were cluster-corrected (p < 0.05), masked for grey matter, and a minimum cluster size > 20 voxels was used.
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