ROI | Hemisphere | Cluster size (voxels) | p-value | T | Z-score | x | y | z |
---|---|---|---|---|---|---|---|---|
Female IBS versus male IBS (amplitude of HF vs LF) | ||||||||
aINS | L | 52 | 0.013 | 3.89 | 3.84 | −32 | 20 | −16 |
pINS | L | 53 | 0.016 | 3.47 | 3.44 | −36 | −6 | −12 |
aINS | R | 44 | 0.015 | 4.54 | 4.48 | 30 | 22 | −16 |
mINS | R | 82 | 0.005 | 4.00 | 3.95 | 36 | 6 | −12 |
pINS | R | 115 | 0.005 | 4.36 | 4.30 | 38 | −4 | −14 |
AMYG | L | 27 | 0.008 | 3.44 | 3.41 | −30 | −2 | −18 |
HIPP | L | 46 | 0.007 | 4.02 | 3.98 | −26 | −26 | −10 |
Female IBS versus male IBS (amplitude of LF vs HF) | ||||||||
poCC | L | 287 | 0.002 | 4.56 | 4.50 | −34 | −16 | 40 |
preCC | L | 544 | 0.000 | 4.93 | 4.84 | −18 | −20 | 68 |
SMA | L | 67 | 0.026 | 4.51 | 4.44 | −14 | −14 | 72 |
ROI analysis was applied by thresholding whole-brain fALFF activation maps at an uncorrected significance threshold of p < 0.001 and using the small volume correction procedure in SPM8. Results were considered significant at cluster threshold of p < 0.05 corrected for voxel wise error rate. MNI coordinates (x,y,z) for peak voxels show significance.