Table 4.
Cortical regions that show a Significant Correlation (cluster size > 10 voxels, p < 0.001 uncorrected) between Hard > Easy Sentences Contrast and (a) Age (negative correlation); (b) Peabody Picture Vocabulary Test-III (PPVT-III) (positive correlation), (c) Test of the Reception Of Grammar-2 (TROG-2) Mean Reaction Time (negative correlation), (d) TROG-2) Mean Reaction Time (positive correlation).
| Cortical Region | Brodmann’s Areas | Peak Z- Score | Number Active Voxels | MNI Coordinates for Peak Activation | ||
|---|---|---|---|---|---|---|
| X | Y | Z | ||||
|
a. Age negatively correlates with Hard > Easy contrast | ||||||
| Right Fusiform Gyrus | 37 | 3.50 | 16 | 39 | −54 | −9 |
| Right Middle Frontal Gyrus | 8, 9 | 3.40 | 15 | 48 | 30 | 36 |
|
b. PPVT-III correlates with. Hard > Easy contrast | ||||||
| Right Frontal Operculum/Claustrum | 4.01 | 44 | 27 | 21 | 15 | |
| Left Superior Temporal Gyrus/Inferior Frontal Gyrus/Insula | 13, 22, 38, 47 | 3.47 | 38 | −51 | 9 | −12 |
|
c. TROG-2 mean reaction time negatively correlates with Hard > Easy contrast | ||||||
| Left Anterior Cingulate/Left Medial Frontal Gyrus | 10, 11, 32 | 3.54 | 30 | −9 | 36 | −9 |
| d. TROG-2 mean reaction time positively correlates with Hard > Easy contrast | ||||||
| Right Inferior Frontal Gyrus/Right Precentral Gyrus/Right Insula | 13, 44, 45, 47 | 4.02 | 29 | 42 | 15 | 3 |
| Right Middle Frontal Gyrus/Right Inferior Frontal Gyrus/Right Insula | 10, 46 | 3.50 | 42 | 39 | 39 | 15 |