Table 2. Regions showing significant differences in fALFF among the groups.
| Area | Cluster Size (voxels) | BA | Side | MNI (peak) | Z-value (peak) | ||
|---|---|---|---|---|---|---|---|
| x | y | z | |||||
| One-way ANOVA among three groups | |||||||
| Putamen | 38 | R | 33 | -12 | 3 | 3.10 | |
| Putamen | 122 | L | -24 | -18 | 9 | 3.32 | |
| SFG/MFG | 60 | 10 | L | -18 | 69 | 15 | 4.04 |
| SFG | 60 | 8 | L | -30 | 42 | 45 | 3.58 |
| Two-sample t-tests between each two groups | |||||||
| BD > CON | |||||||
| Putamen | 180 | L | -27 | 9 | -3 | 3.42 | |
| Putamen | 100 | R | 27 | 15 | 9 | 3.15 | |
| MDD < CON | |||||||
| SFG/MFG | 121 | 10 | L | -18 | 69 | 15 | 4.26 |
| BD >MDD | |||||||
| Putamen | 171 | R | 33 | -12 | 3 | 3.52 | |
| Putamen | 340 | L | -24 | -18 | 9 | 3.86 | |
| SFG | 163 | 10 | L | -9 | 66 | 21 | 4.04 |
A minimum Z > 2.3 and a corrected p < 0.05 at the cluster level were set at the threshold.
fALFF: fractional amplitude of low-frequency fluctuation; BA: Brodmann area; MNI: Montreal Neurological Institute; BD: bipolar disorder; MDD: major depressive disorder; CON: control; SFG: superior frontal gyrus; MFG: medial frontal gyrus; L: left; R: right.