Table A1.

The table shows the data corresponding to the seven reassessed participants.

Initials	Initial status	Current status	Lat P3-Fz	Amp P3-Fz	Lat P3-Pz	Amp P3-Pz	Global cognition	Memory			Attention	Fluency	Daily life activities
							MMSE	Word list (immediate recall)	Word list (delayed recall)	Rey figure (recall)	TMT	Verbal fluency (animals)	Lawton
Cut-off values (Mean ± 2SD)			453.08	3.84	472.13	3.95	% Change	16.01	5.02	2.63	218.37	10.7	% Change
LAM	MCI	Converted to AD	564.47	3.24	558.47	3.17	10% Drop	13.00	4.00	0.00	198.00	14.00	43% Drop
MAP	MCI	Converted to AD	616.94	4.56	600.45	6.40	20% Drop	6.00	3.00	0.00	*	7.00	43% Drop
MCG	MCI	Returned to normal	416.04	9.27	437.04	10.05	29% Increase	20.00	10.00	11.50	96.00	13.00	25% Increase
BPT	MCI	Uncertain	435.53	4.19	441.53	4.61	30% Increase	18.00	8.00	11.00	98.00	19.00	43% Drop
EFR	Control	Continue healthy	441.53	5.53	447.53	9.25	3% Increase	13.00	6.00	11.00	151.00	13.00	No change
OTS	Control	Continue healthy	435.53	3.14	464.02	5.37	6% Increase	18.00	6.00	3.00	149.00	13.00	No change
MRC	Control	Continue healthy	465.52	7.79	488.00	5.03	3% Increase	15.00	5.00	11.00	93.00	20.00	No change

*Could not complete the assessment; Cut-off values: were obtained from the norms corresponding to the same population (Ardila et al., 1994, 2000); Lawton: Scale of Instrumental Activities of Daily Living (IADL).

The P300 variables collected during the first assessment and the Neuropsychological variables collected during the second assessment are presented. In order to assist in the clinical decision, the neuropsychological data from the first and second assessment were contrasted. Scores such as the MMSE and the Lawton Instrumental Activities of Daily Living are expressed as percentage of change in the second relative to the first assessment.