Table 3.
fMRI Summary Data- Analysis 2: Sustained Activity
| a. DLPFC Mask
| ||||||
|---|---|---|---|---|---|---|
| Contrast | Cluster Extent Threshold | # Voxels | Peak T Value | Peak MNI Coordinates x, y, z | Anatomical Areas(s) | Brodmann Area(s) |
| (HE task- rest) – (LE task-rest) | 130 | 130 | 4.27 | 52 38 20 | MFG | 46 |
| 3.27 | 50 36 30 | MFG | 46 | |||
| 3.23 | 54 30 24 | MFG | 46 | |||
| 3.20 | 44 34 20 | MFG | 46 | |||
| b. Whole Brain Exploratory
| |||||
|---|---|---|---|---|---|
| Contrast | # Voxels | PeakT Value | Peak MNI Coordinates x, y, z | Anatomical Areas (s) | Brodmann Area(s) |
| (HE task-rest)–(LE task-rest) | 407 | 4.42 | 52 36 20 | MFG | 46 |
| 3.86 | 54 32 28 | MFG | 46 | ||
| 3.86 | 38 26 20 | Insula | 13 | ||
| 366 | 4.25 | 34 −60 50 | SPL | 7 | |
| 3.87 | 38 −56 38 | IPL | 40 | ||
| 3.09 | 26 −56 48 | SPL | 7 | ||
| 226 | 3.92 | 50 −46 −16 | Fusiform gyrus | 37 | |
| 3.67 | 64 −42 −10 | MTG | 21 | ||
| 3.44 | 60 −48 0 | MTG | 22 | ||
| 3.00 | 50 −44 −8 | MTG | 37 | ||
| 3.94 | 60 −58 2 | MTG | 21 | ||
| Positive Correlation with Trait Anxiety | |||||
| HE task-rest | 223 | 3.42 | 52 −8 56 | Precentral gyrus | 6 |
| 3.28 | 58 −6 48 | Precentral gyrus | 6 | ||
| 3.18 | 52 −26 60 | Postcentral gyrus | 1 | ||
| 3.12 | 50 −30 46 | IPL | 40 | ||
| 3.10 | 58 −14 52 | Postcentral gyrus | 3 | ||
| 2.87 | 52 −20 54 | Postcentral gyrus | 1 | ||
| 2.78 | 62 −2 38 | Precentral gyrus | 6 | ||
| (HE task-rest)–(LE task-rest) | 2,866 | 5.66 | 34 −16 72 | Precentral gyrus | 6 |
| 5.22 | 56 −8 42 | Precentral gyrus | 6 | ||
| 5.18 | 54 −18 52 | Postcentral gyrus | 3 | ||
| 4.97 | 36 −16 64 | Precentral gyrus | 6 | ||
| 4.66 | 48 −26 58 | Postcentral gyrus | 1 | ||
| 3.96 | 50 −8 24 | Precentral gyrus | 6 | ||
| 3.91 | 54 −2 30 | Precentral gyrus | 6 | ||
| 3.87 | 48 −12 40 | Precentral gyrus | 6 | ||
| 3.52 | 42 −42 58 | IPL | 40 | ||
| 3.52 | 54 −16 18 | Postcentral gyrus | 43 | ||
| 3.40 | 62 −14 16 | Transverse temporal gyrus | 42 | ||
| 3.29 | 46 −32 40 | Postcentral gyrus | 2 | ||
| 3.20 | 60 −2 24 | IPL | 6 | ||
| 3.13 | 44 −40 48 | Precentral gyrus | 40 | ||
| 2.98 | 40 −42 36 | Supramarginal gyrus | 40 | ||
| 2.79 | 46 −22 20 | Insula | 13 | ||
| 323 | 3.71 | −48 −16 34 | Precentral gyrus | 6 | |
| 3.68 | −44 −6 32 | Precentral gyrus | 6 | ||
| 3.15 | −46 −18 20 | Insula | 13 | ||
| 3.00 | −38 2 34 | Precentral gyrus | 6 | ||
| 165 | 3.44 | −42 −40 58 | IPL | 40 | |
| 3.34 | −48 −38 48 | IPL | 40 | ||
Note. Up to 20 local maxima are reported for each cluster. Description of the anatomical area of each of these sub-peaks is provided, as well as Brodmann area (when applicable).
a) Contrasts were originally thresholded at p <.005, and then corrected for multiple comparisons using a cluster extent threshold as determined in AlphaSim (p <.05). A DLPFC mask (BA 9 and BA 46) was created using the WFU Pickatlas (Maldjian JA et al., 2003).
b) For this exploratory whole brain analysis, a threshold of, p<.005, > 100 voxels (uncorrected) was used.
HE = high expectancy task; LE = low expectancy task; MFG = middle frontal gyrus; SPL = superior parietal lobule; IPL = inferior parietal lobule; MTG = middle temporal gyrus.