Table 1. The steady-state power, and the latency and amplitude of N1 and P2 (± SD) at different stimulus types (S1–S3). Right columns report ANOVA results.

	Stimulus type			ANOVA
	S1	S2	S3	F	P
Steady-state power (µV2)	–	0.31±0.15	0.22±0.13	–	–
N1 latency (ms)	145±17	156±13	157±14	3.520	0.037
N1 amplitude (µV)	−6.47±2.49	−7.12±2.76	−8.40±2.97	2.431	0.098
P2 latency (ms)	296±52	297±55	294±55	0.015	0.985
P2 amplitude (µV)	5.06±2.44	4.85±2.36	4.97±2.47	0.035	0.965