Table 2.

ERPs amplitude in study phase (M ± SD).

Type	P1(uV)		N170(uV)		P2(uV)		N300(uV)
	FN group	Control group	FN group	Control group	FN group	Control group	FN group	Control group
High	6.64 ± 0.75	8.16 ± 1.16	−10.40 ± 1.11	−12.604 ± 1.03	4.50 ± 0.99	1.13 ± 1.02	−8.83 ± 0.63	−5.90 ± 0.75
Middle	6.31 ± 0.80	6.66 ± 1.19	−10.20 ± 1.01	−12.511 ± 0.97	3.82 ± 0.72	0.64 ± 0.87	−7.52 ± 0.62	−4.37 ± 1.00
Low	7.83 ± 0.80	6.64 ± 1.19	−12.08 ± 1.00	−10.571 ± 1.04	3.53 ± 0.95	0.03 ± 0.96	−6.91 ± 0.79	−4.14 ± 0.95
Total					3.98 ± 0.87	0.56 ± 0.94	−7.75 ± 0.66	−4.81 ± 0.87