Table 5.

Gray matter differences among PNS patients, non-PNS patients, and healthy controls using voxel-based morphometry.

Cluster size	p-value (FWE)	t-value	MNI coordinates			Side	Region or structure (BA)
			x	y	z
NON-PNS > PNS
1802	0.004	4.96	3	54	−12	Right	Medial–orbital frontal gyrus (BA 11)
		4.39	17	51	−5	Right	Medial–orbital frontal gyrus (BA 10)
		3.80	14	41	−15	Right	Inferior frontal gyrus (BA 11)
926	0.05	4.94	35	−19	−30	Right	Parahippocampal gyrus (BA 36)
		4.21	39	−33	−17	Right	Fusiform gyrus (BA 20)
PNS > NON-PNS
No significant differences
CONTROL > PNS
2322	0.002	4.93	35	−16	−30	Right	Parahippocampal gyrus (BA 36)
		4.64	39	−31	−17	Right	Fusiform gyrus (BA 20)
		4.24	50	−28	4	Right	Superior temporal gyrus (BA 22)
PNS > CONTROL
No significant differences
CONTROL > NON-PNS
No significant differences
NON-PNS > CONTROL
No significant differences

MNI coordinates represent the peak voxels in each cluster where x, y, and z indicate the distance measured in millimeters from the anterior commissure in the sagittal, coronal, and axial planes, respectively. BA represents the Brodmann Area for each region or structure.