Table 2. Significantly altered IC maps in the CM group compared with the HC group.
| IC | Sign | Region label | Extent | t-value | MNI coordinates | ||
|---|---|---|---|---|---|---|---|
| x | y | z | |||||
| 2 | Positive | Angular_L | 42 | 6.26 | –54 | –57 | 24 |
| 5 | Positive | Parietal_Sup_R | 23 | 4.97 | 24 | –54 | 60 |
| Negative | Frontal_Sup_2_L | 23 | –5.16 | –24 | 30 | 36 | |
| 7 | Negative | Calcarine_R | 29 | –4.41 | 6 | –72 | 6 |
| 17 | Negative | Precuneus_L | 30 | –5.09 | 0 | –57 | 15 |
| 19 | Negative | Frontal_Sup_2_L | 27 | –4.45 | –21 | 54 | 15 |
CM, chronic migraine; HC, healthy control; IC, independent component; MNI, Montreal Neurological Institute.