Table 3.
Significant differences by choice type in functionally defined regions of interest identified using a disjunction mask. Extraction Type I error rates were familywise p <.005 + cluster size ≥5 adjacent voxels (voxelwise p <.000016). Imp = impulsive choices, Restr = restrained choices; CTL = control choices; SEM = standard error of the mean; L = left, R = right. Coordinates are in Talairach space.
| L/R | Region | Extent (mm3) | X | Y | Z | F (1,12) | Imp t (SEM) |
Restr t (SEM) |
CTL t (SEM) |
p |
|---|---|---|---|---|---|---|---|---|---|---|
| L | Medial Frontal Gyrus (MeFG) | 405 | −2 | −24 | 68 | 8.32 | 0.76 (.15)a | 0.85 (.15)a | 0.32 (.15) | <.01 |
| L | Precuneus (PCN) | 270 | −5 | −58 | 36 | 2.53 | 0.84 (.15) | 0.68 (.22) | 0.39 (.19) | 0.10 |
| R | Middle Temporal Gyrus (MTG) | 243 | 56 | −48 | −8 | 3.77 | 0.79 (.11)a | 0.40 (.22)b | 0.30 (.14) | 0.04 |
| R | Superior Parietal Lobule (SPL) | 189 | 37 | −65 | 48 | 1.20 | 0.81 (.18) | 0.59 (.15) | 0.45 (.18) | 0.32 |
| R | Cingulate Gyrus (CG) | 162 | 1 | 30 | 34 | 5.73 | 0.38 (.26) | 0.79 (.10)a,b | −0.02 (.22) | 0.01 |
| R | Superior Frontal Gyrus (SFG) | 135 | 13 | 24 | 56 | 3.73 | 0.59 (.22) | 0.89 (.14)a | 0.42 (.19) | 0.04 |
| R | Middle Frontal Gyrus (MFG) | 135 | 29 | 12 | 57 | 5.67 | 0.64 (.21) | 1.03 (.17)a,b | 0.35 (.20) | 0.01 |
Superscripts:
a
significantly different from CTL, p <.05;
b
statistical trend compared to Imp, p <.10.