Table 2.

Regions contributing to discrimination between the drug-naive OCD and healthy control subjects on the basis of fALFF values

Brain regions	MNI coordinates			Wi
	x	y	z
OCD > HCS
L superior temporal gyrus	− 49	−4	4	15.16
R middle temporal gyrus	53	−1	−16	19.44
OCD < HCS
L supramarginal gyrus	−49	−51	26	−15.91
R superior parietal lobule	20	−58	74	−15.73

The regions were identified by setting the threshold to ≥30% of the maximum weight vector, the value of which indicates the relative contribution to the classification. OCD obsessive-compulsive disorder, fALFF fractional amplitude of low-frequency fluctuation, HCS healthy control subjects, L left, R right, MNI Montreal Neurological Institute, Wi weight vector value.