Table 2.

ANOVA Results.

Repeated-measures analyses of variance (ANOVA) results for data collected at electrode Cz and for global field power (GFP). Results for latency and amplitude across components P1, N1, and P2 are included.

		Effect of Output Level		Effect of Amplification (unaided vs. aided)		Amplification × Output
		F-statistic (df)	P-value	F-statistic (df)	P-value	F-statistic (df)	P-value
Cz
	Latency
	P1	5.028 (3,24)	0.008	20.682 (1,8)	0.002	1.160 (3,24)	0.331
	N1	2.799 (3,24)	0.062	18.854 (1,8)	0.002	1.263 (3,24)	0.309
	P2	3.394 (3,24)	0.034	19.192 (1,8)	0.002	1.914 (3,24)	0.154
	Amplitude
	P1	0.087 (3,24)	0.967	13.371 (1,8)	0.006	0.985 (3,24)	0.417
	N1	1.880 (3,24)	0.160	1.435 (1,8)	0.265	0.419 (3,24)	0.741
	P2	2.637 (3,24)	0.073	7.772 (1,8)	0.024	4.184 (3,24)	0.016
GFP
	Latency
	N1	6.124 (3,24)	0.003	75.569 (1,8)	< 0.001	3.543 (3,24)	0.059
	P2	2.452 (3,24)	0.088	71.03 (1,8)	< 0.001	0.341 (3,24)	0.796
	Amplitude
	N1	5.462 (3,24)	0.005	66.280 (1,8)	0.266	1.103 (3,24)	0.367
	P2	6.665 (3,24)	0.002	39.146 (1,8)	< 0.001	4.761 (3,24)	0.010