Table 4.
Neural regions showing increased activation for the parametric contrasts for increasing ambiguity and decreasing ambiguity levels of the trials. Peak coordinates for each cluster are reported as well as lateralization of the effect (L=left; R=right). Whole brain activation maps were thresholded at z > 3.1, p < .05 FWE corrected.
| Region |
z-stat |
L/R |
MNI |
voxels |
||
|---|---|---|---|---|---|---|
| x | y | z | ||||
| Parametric whole brain contrast for increasing ambiguity | ||||||
| Occipital Cortex | 8.54 | L | -20 | -98 | -2 | 7482 |
| Superior Temporal Cortex | 4.33 | R | 60 | -18 | 28 | 221 |
| Superior Frontal Gyrus | 4.19 | R | 26 | 4 | 54 | 121 |
| Precuneus | 3.82 | R | 4 | -66 | 52 | 77 |
| Inferior Parietal Cortex | 4.13 | L | -58 | -26 | 32 | 76 |
| Parametric whole brain contrast for decreasing ambiguity | ||||||
| Occipital Cortex | 4.29 | L | -32 | -78 | -40 | 258 |
| Temporal Pole | 4.58 | L | -44 | 16 | -14 | 245 |
| Posterior Cingulate Gyrus | 4.44 | R | 2 | -36 | 32 | 173 |
| Supramarginal Gyrus | 3.97 | R | 60 | -42 | 0 | 129 |
| Superior Temporal cortex | 4.12 | R | 52 | -10 | -22 | 83 |
| Ventromedial Prefrontal cortex | 4 | R | 0 | 50 | -6 | 78 |
| Ventromedial Prefrontal cortex | 3.62 | L | -10 | 46 | 38 | 73 |
| Supramarginal Gyrus | 4.22 | L | -64 | -26 | -24 | 71 |