Table 3.
Brain regions showing a significant interaction effect between the main effects of pressure pain and cycle phase. Minimum cluster size was 465 mm3.
| Region | Side | Talairach coordinates (peak voxel) | Volume (mm3) | Z-score | ||
|---|---|---|---|---|---|---|
| x | y | z | ||||
| Medial frontal gyrus | midline | 4 | 53 | 21 | 874 | 3.41 |
| Superior frontal gyrus | ipsilateral | -15 | 50 | 42 | 588 | 3.66 |
| Middle frontal gyrus | ipsilateral | -40 | 26 | 24 | 734 | 3.97 |
| Inferior parietal lobule | contralateral | 47 | -37 | 39 | 818 | 3.81 |
| Middle occipital gyrus | ipsilateral | -29 | -86 | 15 | 515 | 3.29 |
| contralateral | 37 | -83 | 8 | 963 | 3.52 | |
| Posterior lobe (cerebellum) | ipsilateral | -16 | -54 | -44 | 503 | 3.65 |
| contralateral | 40 | -51 | -37 | 632 | 3.16 | |
| Vermis (cerebellum) | contralateral | 6 | -50 | -36 | 817 | 3.88 |