Table 2.

Group averages of mean amplitudes (in bicronvolt) and peak latencies (in milliseconds) for the different tones (standard, low deviant, high deviant) and components (P1, N1, and P2).

	P1		N1		P2
	Control	Patient	Control	Patient	Control	Patient
AVERAGE AMPLITUDE
Standard	0.281	0.463	0.290	0.031	0.552	0.635
Low deviant	0.324	0.337	−0.941	−0.468	0.705	0.812
High deviant	−0.080	0.219	−1.614	−0.95	0.357	0.299
PEAK LATENCY
Standard	77	84	135	135	187	197
Low deviant	68	73	150	152	242	240
High deviant	65	75	133	139	246	232