Table 1.

Mean and standard deviation of amplitudes and implicit times of a- and b-waves (DA 3.0 and DA 10.0). Asterisks (**) correspond to a p-value < 0.001.

		Normal Controls		ACHM
		Amplitude (Mean ± Std)	Implicit Time (Mean ± Std)	Amplitude (Mean ± Std)	Implicit Time (Mean ± Std)
DA 3.0	a-wave	−264.8 ± 61.8	14.6 ± 1.08	−185 ± 50.9 **	16.20 ± 1.48 **
	b-wave	449.8 ± 107.49	48.4 ± 4.10	324.17 ± 93 **	53.33 ± 5.3 **
DA 10.0	a-wave	−302.57 ± 65.6	11.07 ± 0.9	−219.99 ± 60.7 **	12.35 ± 1 **
	b-wave	456.50 ± 116.47	47.38 ± 4.8	344.96 ± 91.8 **	49.14 ± 4.6