Table 2.
Areas of peak activation for intention versus means and means versus intention contrasts
| Volume | Peak coordinates | Peak | |||||
|---|---|---|---|---|---|---|---|
| Contrast and group | Region | Hemisphere | (number of voxels) | X | Y | Z | t |
| Intention versus means | |||||||
| TD | Precuneus | Left | 1,063 | -6 | -63 | 33 | 7.4 |
| Middle temporal gyrus | Right | 616 | 39 | -51 | 3 | 6.8 | |
| Middle temporal gyrus | Left | 482 | -60 | -63 | 18 | 5.9 | |
| ASD | Middle occipital gyrus | Left | 1,056 | -36 | -72 | 36 | 5.2 |
| Posterior cingulate cortex | Left | 649 | -6 | -51 | 30 | 5.1 | |
| Superior temporal gyrus | Right | 605 | 54 | -45 | 21 | 5.1 | |
| Middle frontal gyrus | Left | 501 | -30 | 3 | 51 | 5.2 | |
| Inferior frontal gyrus | Right | 102 | 57 | 21 | 6 | 3.1 | |
| Middle frontal gyrus | Right | 100 | 36 | 15 | 48 | 3.5 | |
| Means versus intention | |||||||
| TD | Middle occipital gyrus | Left | 1,564 | -33 | -87 | -3 | -5.3 |
| Supramarginal gyrus | Left | 334 | -51 | -30 | 33 | -4.0 | |
| Thalamus | Left | 143 | -24 | -27 | -3 | -4.7 | |
| ASD | Cerebellar vermis | Left | 334 | 3 | -57 | -9 | -3.8 |
| Inferior occipital gyrus | Left | 253 | -27 | -78 | -6 | -4.6 | |
| Angular gyrus | Right | 127 | 30 | -60 | 48 | -4.6 | |
| Rectal gyrus | Left | 108 | 0 | 33 | -24 | -3.3 | |
| Group differences | |||||||
| TD > ASD | Calcarine gyrus | Right | 355 | 6 | -66 | 15 | 3.8 |
| ASD > TD | Inferior frontal gyrus | Left | 178 | -48 | 33 | 15 | -3.4 |
Abbreviations: TD typically developing, ASD autism spectrum disorder.