Table 1.
Brain areas showing significant activation. Contrasts: verbal 2s ISI > baseline, verbal 8s ISI > baseline, non-verbal 2s ISI > baseline, and non-verbal 8s ISI > baseline. The Montreal Neurological Institute (MNI) coordinates of the most active voxel is given for each cluster, along with the z-value of the magnitude of activation and the number of voxels contained within the cluster (in parentheses). Abbreviations for each brain structure assigned using the SPM2 extension MSU: MFG = middle frontal gyrus; IFG = inferior frontal gyrus; IPL = inferior parietal lobule; STG = superior temporal gyrus; SFG = superior frontal gyrus; MTG = middle temporal gyrus
| MNI coordinates | ||||||
| Hemisphere & Region | Brodmann Area | Hemisphere | x | y | z | Z-values of maxima (cluster size in number of voxels) |
| Verbal 2s ISI > baseline | ||||||
| cingulate gyrus, IPL, MFG, postcentral gyrus, precentral gyrus | 4/6/24/44 | L | -2 | 8 | 52 | 5.92 (13387) |
| cerebellum | N/A | L/R | 8 | -54 | -10 | 5.61 (2642) |
| cuneus, posterior cingulate, precuneus | 30/31 | L/R | 24 | -44 | 0 | 5.18 (1464) |
| IPL, postcentral gyrus, precuneus | 2/7/40 | R | 20 | -64 | 46 | 5.15 (1883) |
| Insula, MFG | 6/13/44 | R | 30 | 50 | 30 | 4.82 (1626) |
| Verbal 8s ISI > baseline | ||||||
| cingulate gyrus, insula, precentral gyrus | 4/6/24/44 | L/R | 6 | -26 | 0 | 5.88 (22831) |
| MFG | 6 | R | 30 | -8 | 60 | 4.79 (184) |
| postcentral gyrus, precentral gyrus | 9/10 | R | 32 | 58 | 22 | 4.59 (248) |
| MFG, SFG | 9/10 | L | -42 | 26 | 30 | 4.57 (371) |
| MTG, STG | 39 | R | 50 | -58 | 6 | 4.15 (113) |
| MFG | 6 | R | 36 | -2 | 38 | 4.13 (275) |
| MFG, SFG | 9/10 | R | 32 | 58 | 22 | 3.92 (272) |
| Non-verbal 2s ISI > baseline | ||||||
| cerebellum | N/A | L/R | 8 | -60 | -10 | 5.56 (2308) |
| IPL, postcentral gyrus | 2/3/4/40 | L | -38 | -40 | 52 | 4.75 (1777) |
| IPL | 2/40 | R | 38 | -56 | 52 | 4.58 (1353) |
| IFG, insula | 13/44 | L | -48 | 8 | 16 | 4.58 (839) |
| cingulate gyrus, MFG | 8/24/32 | L/R | 4 | 16 | 52 | 4.41 (795) |
| IFG, insula | 13/47 | R | 40 | 16 | 2 | 4.35 (181) |
| cingulate gyrus | 23 | L/R | 8 | -32 | 32 | 4.32 (149) |
| Non-verbal 8s ISI > baseline | ||||||
| IFG, insula, thalamus | 9/13/41/44 | L | -6 | -18 | 4 | 5.85 (5935) |
| IFG, insula, IPL, MFG, precentral gyrus | 13/23/30/40 | R | 40 | 16 | 0 | 5.84 (11186) |
| cingulate gyrus medial, frontal gyrus | 23/24/33 | L/R | 4 | 18 | 48 | 5.82 (8829) |
| cuneus, precuneus | 19 | L | -30 | -80 | 34 | 4.60 (339) |