Table 4.

Brain regions with abnormal fALFF in patients with PSI.

Brain regions	Voxels	Coordinate (Peak MNI, X Y Z)			T-value
Cluster 1	63	−36	−90	−18	−5.66
Inferior occipital gyrus (L)	33
Cluster 2	118	18	−51	−12	−5.85
Lingual gyrus (R)	75
Cluster 3	82	39	−69	0	−6.36
Inferior occipital gyrus (R)	43
Cluster 4	263	−9	−81	21	−5.70
Lingual gyrus (L)	102
Cuneus (R)	37

fALFF, fractional amplitude of low-frequency fluctuation; MNI, Montreal Neuroscience Institute; L, left; R, right. A negative T value indicates that the fALFF value of the PSI group is lower than that of the HCs. AAL templates were used to localize the brain regions.