Table 2.

Mean rejection-positivity (RP) amplitudes (μV; standard errors of the mean in parentheses) calculated from ERP difference waveforms (see Figure 5) at the Cz electrode.

	Left-ear syllables		Right-ear syllables
Time window	Right-ear phonological task	Right-ear non-phonological task	Left-ear phonological task	Left-ear non-phonological task
(A) SUPPRESSION EFFECTS ON AUDITORY SYLLABLES DURING AUDITORY TASKS
150–200 msa	ns	ns	ns	ns
200–250 msa	0.5 (0.2)**	0.5 (0.2)**	0.5 (0.2)**	ns
250–300 msa	0.5 (0.2)**	0.4 (0.2)*	0.4 (0.2)**	ns
(B) SUPPRESSION EFFECTS ON SPOKEN SYLLABLES DURING THE VISUAL PHONOLOGICAL TASK
150–200 msa	ns		ns
200–250 msa	ns		ns
250–300 msa	0.5 (0.1)**		ns

RPs were obtained by subtracting ERPs to the left-ear and right-ear syllables during the visual non-phonological (V_NP) task from ERPs to the left-ear and right-ear syllables, respectively, that were to be ignored during phonological or non-phonological task involving the opposite-ear syllables (R_P/R_NP and L_P/L_NP, respectively) or during the visual phonological (V_P) task.

(A) RP in ERPs to spoken syllables delivered to one ear during attention to the opposite ear and (B) RP in ERPs to spoken syllables during the V_P task at Cz electrode are reported if statistically significant from zero.

^aSignificance from one-sided t-tests Bonferroni corrected for t-tests at the 3 predetermined time windows.

^**p < 0.01,

^*p < 0.05, ns, non-significant. Time windows written in bold font were analyzed further with ANOVAs.