Table 4.
Whole brain analysis of the brain activation related to verbal creative problems solving during search and solution with different contrasts.
| Side | Peak voxel MNI coordinates (mm) |
Cluster size |
Peak t |
|||
|---|---|---|---|---|---|---|
| x | y | z | (voxel) | score | ||
| Model 1- fMRI results during search phase (search > solution) | ||||||
| IFG, pars triangularis | L | −50 | 28 | 6 | 224 | 6.18 |
| Middle Temporal Gyrus | L | −52 | −42 | 2 | 203 | 5.96 |
| Posterior Insula | R | 38 | −16 | 22 | 171 | 5.03 |
| Model 1 - fMRI results during solution: Brain areas correlating with parametric modulator Search extension variable (positive trial-by-trial relation with higher semantic distance) | ||||||
| Anterior Insula extending into IFG, pars triangularis and opercularis | L/R | −28 | 24 | 0 | 1357 | 8.00 |
| 36 | 16 | 0 | 796 | 7.25 | ||
| Mid-cingulate Cortex extending into left Anterior-cingulate Cortex and Supplementary Motor Area | R | 4 | 34 | 34 | 1269 | 6.25 |
| Thalamus | L | −12 | −14 | 2 | 248 | 6.08 |
| IFG, pars opercularis | R | 58 | 16 | 26 | 329 | 4.85 |
| Superior Frontal Cortex | L | −22 | 38 | 32 | 87 | 4.79 |
| Precentral Cortex | L | −48 | 10 | 48 | 51 | 4.67 |
| Angular Gyrus | R | 34 | −56 | 38 | 89 | 4.47 |
| Middle Temporal Gyrus | R | 66 | −32 | −6 | 70 | 4.45 |
| Model 1 - fMRI results during solution: Brain areas correlating with contrast Search extension > Prime variable (positive trial-by-trial relation with higher semantic distance) | ||||||
| IFG, pars triangularis extending into pars orbitalis and opercularis | L | −46 | 18 | 4 | 95 | 4.41 |
| IFG, pars orbitalis extending into Anterior Insula | R | 34 | 24 | −8 | 83 | 4.52 |
| Intersection between Angular Gyrus and Supramarginal Gyrus | R | 52 | −46 | 36 | 62 | 4.67 |
| Model 2 - fMRI results during search: Brain areas correlating with parametric modulator Search extension | ||||||
| Angular Gyrus | L | −42 | −74 | 40 | 80 | 6.13 |
| Model 3 - fMRI results during last 2 s before solution: Brain areas correlating with contrast Search extension > Prime variable (positive trial-by-trial relation with higher semantic distance) | ||||||
| IFG, pars orbitalis | L/R | −50 | 18 | −6 | 66 | 4.74 |
| 44 | 28 | −6 | 121 | 5.50 | ||
| Anterior Insula | L | −34 | 24 | −4 | 84 | 5.29 |
| Middle Temporal Gyrus | L/R | −66 | −22 | −4 | 86 | 5.43 |
| 54 | −70 | 18 | 861 | 5.89 | ||
| Nucleus Caudatus | R | 10 | 2 | 12 | 71 | 6.00 |
| Fusiform Gyrus | R | 40 | −58 | −20 | 203 | 6.80 |
| Middle Occipital Gyrus | L | −44 | −78 | −2 | 135 | 6.58 |
| Calcarine Gyrus | L | −12 | −66 | 14 | 419 | 6.31 |
Note. Clusters are whole-brain FWE corrected for multiple comparisons at p < .05, L = left; R = right; size (voxel) = cluster size, peak t score = maximum t value of significantly activated clusters.