Table 4.

Kendall’s tau-b correlation coefficients relating neuropsychological test scores and OERP amplitudes significantly affected in the MCI group (F3, F7, and F8 in N1 component and F7 and F8 in LPC component).

	KENDALL’S TAU-B
	F3 (N1)		F7 (N1)		F8 (N1)		F7 (LPC)		F8 (LPC)
	Cor.	p	Cor.	p	Cor.	p	Cor.	p	Cor.	p
MMSE	-0.23	0.15	-0.35	0.03ˆ*	0.24	0.14	-0.22	0.17	0.31	0.05ˆ*
AVLTa	-0.21	0.20	-0.33	0.05ˆ*	0.31	0.06	-0.17	0.29	0.25	0.13
AVLTb	-0.34	0.05ˆ*	-0.54	0.00ˆ**	0.44	0.01ˆ*	-0.40	0.02ˆ*	0.38	0.03ˆ*
AVLTc	-0.32	0.05ˆ*	-0.33	0.04ˆ*	0.19	0.26	-0.26	0.11	0.35	0.03ˆ*
Digit Span	-0.14	0.39	-0.38	0.02ˆ*	0.42	0.01ˆ*	-0.32	0.06	0.26	0.12
Corsi	-0.25	0.12	-0.46	0.00ˆ**	0.31	0.06	-0.38	0.02ˆ*	0.37	0.02ˆ*
TMT	-0.33	0.06	-0.52	0.00ˆ**	0.31	0.09	-0.29	0.10	0.40	0.02
TMT-B	-0.33	0.05ˆ*	-0.52	0.00ˆ**	0.36	0.04ˆ*	-0.41	0.02	0.43	0.01ˆ*
TMT-AB	-0.26	0.13	-0.40	0.02ˆ*	0.36	0.04ˆ*	-0.45	0.01ˆ**	0.29	0.10