Table 2: ERD and ERS showed significant differences between males and females during the auditory oddball task. These ERD and ERS regions were chosen as seeds. X, Y and Z indicate coordinates of the seed regions.

	Frequency	Time window	X	Y	Z	ERDERS ratio (%)				One sample t-test		Paired t-test		Region
						Sex	Mean	95% confidence interval
								lower limit	upper limit	t-value	p-value	t-value	p-value
1	30-50Hz	450-500ms	-5.0	-6.0	32.0	Male	-7.7	-46.2	30.9	-0.426	0.677	-2.267	0.031	Left-posterior cingulate cortex (CGp)
						Female	41.4	14.8	67.9	3.323	0.005
2	50-100Hz	200-250ms	0.0	19.0	15.0	Male	6.6	-15.2	28.5	1.020	0.325	-2.069	0.048	Right-caudal anterior cingulate cortex (cACC)
						Female	38.5	14.1	62.9	2.409	0.029
3	100-150Hz	325-375ms	1.0	41.0	-3.0	Male	28.4	11.2	45.6	3.549	0.003	2.289	0.030	Left-rostral anterior cingulate cortex (rACC)
						Female	1.3	-17.1	19.8	0.152	0.882