Table 4.

Correlations between the medial thalamus-seeded FC and VAS changes in the orofacial pain group.

Brain region	MNI coordinates			Clusters size	t-value
	x	y	z
Positive correlation
Right ACC	15	15	51	168	4.36
Posterior cingulate cortex	−3	−54	24	337	3.08
Negative correlation
Left cerebellum	−33	−54	−45	166	−4.11

The FC between the medial thalamus and the right ACC and posterior cingulate cortex (PCC) was positively correlated with the VAS score changes, and the FC between the medial thalamus and the left cerebellum was negatively correlated with the VAS score changes (AlphaSim correction, note: The threshold for significant clusters was set as follows: 1,000 iterations, p < 0.05 at the cluster level combined with p < 0.05 at the voxel level, 4 estimated smooth kernels, at least 154 voxels; Figure 4).