fMRI results across subjects.

This table shows all activity surviving cluster level correction across the whole brain (P<0.05 FWE corrected; threshold of P<0.005 used to define the clusters) for our GLM with a 2 valence (gain, loss) by 2 skew type (posSkew, negSkew) by 2 choice (risky, sure) factorial design corresponding to the categorical distinctions in our design, and with variance as a parametric modulator. We report all activity for all main effects and contrasts in the factorial design, and for positive and negative correlations with variance and for the interaction of variance in gains versus losses. Activity for loss>gain survived SVC in dmPFC/pre-SMA (9 17 46, Z = 3.94, 103vox). For each cluster is shown: the three constituent peaks with the highest Z-scores; the number of voxels at P<0.005 (uncorrected); and the P-value of the cluster after FWE correction across the whole brain. (ACC  =  Anterior Cingulate Cortex; IFG  =  Inferior Frontal Gyrus; OFC  =  orbitofrontal cortex; SMA  =  Supplementary Motor Area).