Table 4.

Mean amplitudes (μV, standard errors of the mean in parentheses) of N1 and P2 responses to to-be-ignore written letters, measured at O1 and O2 electrodes over time windows 100–150 ms and 200–300 ms from letter appearance, respectively, during auditory left-ear and right-ear phonological and non-phonological tasks.

	Phonological task		Non-phonological task
	Left-ear task	Right-ear task	Left-ear task	Right-ear task
O1 ELECTRODE
N1 (100–150 ms)	−0.3 (0.4)	−0.1 (0.3)	−0.3 (0.4)	−0.0 (0.4)
P2 (200–300 ms)	2.0 (0.3)	1.9 (0.3)	2.2 (0.4)	1.9 (0.3)
O2 ELECTRODE
N1 (100–150 ms)	−0.1 (0.3)	−0.0 (0.3)	−0.1 (0.3)	−0.2 (0.3)
P2 (200–300 ms)	1.7 (0.3)	2.1 (0.3)	1.8 (0.3)	1.9 (0.3)