Table 3.

Mean latencies in ms and standard deviation (SD) of the gating effect of P50 and N100 component in each region of interest and group.

	Region	Young (n = 20) Mean (SD)	Older (n = 20) Mean (SD)
P50	Frontal	61.60 (19.682)	53.90 (16.339)
	Fronto-central	55.18 (13.792)	57.15 (7.946)
	Central	50.53 (7.994)	60.38 (6.479)
	Centro-parietal	51.98 (10.369)	62.82 (8.225)
N100	Frontal	107.85 (25.612)	122.72 (25.947)
	Fronto-central	117.73 (14.259)	134.92 (15.008)
	Central	112.53 (11.063)	131.90 (13.603)
	Centro-parietal	112.43 (17.933)	115.33 (21.798)