Table 2.
fMRI results: ANOVA 2, modeling effects over expectation phase:
| Analyses performed/Cerebral region | R/L | NV | t-value | Coordinates of peak activity | ||
|---|---|---|---|---|---|---|
| x | y | z | ||||
| ANOVA 2: Effects over expectation phase | ||||||
| ANOVA: increasing reward magnitude t = 3.47 | ||||||
| ventral striatum | L | 34 | 4.39 | -12 | 6 | 0 |
| gyrus fusiformis | L | 90 | 5.14 | -30 | -64 | -10 |
| 75 | 4.54 | -24 | -50 | -12 | ||
| R | 121 | 4.42 | 34 | -60 | -14 | |
| lateral occipital cortex | R | 435 | 5.94* | 42 | -90 | -4 |
| L | 215 | 5.45* | -20 | -98 | -10 | |
| ANOVA: high > low reward value level | ||||||
| n.s. | ||||||
| ANOVA: increasing reward probability | ||||||
| n.s. | ||||||
| ANOVA: increasing reward uncertainty, t = 2.94 | ||||||
| MPFC | 1184 | 5.53* | 2 | 50 | -12 | |
| 5.48* | -8 | 34 | -22 | |||
| lateral orbitofrontal cortex | L | 87 | 4.04 | -36 | 34 | -18 |
| DLPFC | L | 76 | 4.08 | -26 | 26 | 44 |
| hippocampal area | L | 310 | 5.09 | -22 | -18 | -22 |
| R | 189 | 5.43* | 22 | -16 | -24 | |
| amygdala | R | # | 3.48 | 22 | 0 | -20 |
| medial temporal gyrus | L | 132 | 4.80 | -60 | -30 | 8 |
| precuneus | R | 1177 | 6.06* | 14 | -54 | 12 |
| lateral occipital cortex | R | 1265 | 9.19* | 34 | -96 | -4 |
| L | 297 | 5.68* | -34 | -94 | -4 | |
Group maximum t-values and MNI coordinates of activation foci for the three repeated measures ANOVAs computed on the second level. Statistical maps were generally thresholded at p < 0.05 FDR corrected for multiple comparisons and FWE corrected where indicated. Results were extent threshold corrected at 0.05 at the cluster level.
*: FWE corrected; #: part of the cluster above