Table 2. Performance evaluation between different pairs of PFC subregions.

Regions of comparison	Modality	Accuracy %	Sensitivity %	Specificity %	AUC %	Mean Overall Performance %
VLPFC - DLPFC	EEG	+ 2.1*	+ 0.4	+ 3.7**	+ 0.3	+ 1.6
	fNIRS	+ 2.1*	−3.8	+ 7.9***	+ 3.4**	+ 2.4*
	EEG-fNIRS	+ 5.2**	+ 3.7**	+ 6.7***	+ 1.9	+ 4.4**
VLPFC - PFA	EEG	+ 2.7*	+ 1.0	+ 4.4**	−2.2	+ 1.5
	fNIRS	+ 3.6**	−3.4	+ 10.4***	+ 3.4**	+ 3.5**
	EEG-fNIRS	+ 5.2**	+ 4.6**	+ 5.8***	+ 2.5*	+ 4.5**
DLPFC - PFA	EEG	+ 0.6	+ 0.6	+ 0.7	+ 2.5*	+ 1.4
	fNIRS	+ 1.5	+ 0.4	+ 2.5*	0	+ 1.1
	EEG-fNIRS	0	+ 0.9	−0.9	+ 0.6	+ 0.2

The mean overall performance is based on the average of accuracy, sensitivity, specificity and AUC values. The marks ‘*’, ‘**’ and ‘***’ indicate different levels of significance in performance between pairs of subregions, with p<0.05, p<0.01 and p<0.001, respectively.