PMC:2813722 / 16952-19887
Annnotations
{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/2813722","sourcedb":"PMC","sourceid":"2813722","source_url":"https://www.ncbi.nlm.nih.gov/pmc/2813722","text":"N2 results\nN2 amplitudes and latency were analyzed using an ANOVA with cultural group as a between-subjects variable and go/no-go condition (go trials, no-go trials) and laterality (right, left) as within-subjects variables. Post hoc pairwise comparisons with Bonferroni adjustments were carried out for all significant interactions. Figure 3 presents the grand-averaged waveforms of the N2 component at the corresponding pair of left-right electrode sites that best illustrate the effects reported below: electrode site 112 (on the right) for the no-go condition and electrode site 13 (on the left) for the go condition. Waveforms are also shown for all other sites in the montage.\nFigure 3 Stimulus-locked grand-averaged ERP waveforms for the two cultural groups. (A) Data from fronto-central electrode site 112 (right-hemisphere) for the no-go condition, accompanied by waveforms from electrode sites 111, 117, 118, 124 (right-hemisphere) for the no-go condition. (B) Data from fronto-central electrode site 13 (left-hemisphere) for the go condition, accompanied by waveforms from electrode sites 24, 28, 20, 29 (left-hemisphere) for the go condition. No significant effects or interactions were found for N2 latencies (ηp2\u003c0.07 in all cases). The ANOVA on N2 amplitudes revealed a marginally significant main effect for cultural group, F(1, 35) = 3.78, p \u003c 0.06, ηp2=0.10 (Chinese M = −6.01 μV, SE = 0.89; European M = −3.67 μV, SE = 0.82), and a significant effect of laterality, F(1, 35) = 15.05, p \u003c 0.001, ηp2=0.30 (Right M = −5.72 μV, SE = 0.65; Left M = −3.95 μV, SE = 0.64). These effects were qualified by a significant Go/no-go condition × Laterality interaction, F(1, 35) = 110.64, p \u003c 0.001, ηp2=0.76, and a significant Cultural group × Go/no-go condition × Laterality interaction, F(1, 35) = 5.40, p \u003c 0.05, ηp2=0.13. Post hoc tests examining the effect of cultural group revealed that Chinese-Canadian children showed larger (i.e., more negative) N2 amplitudes than European-Canadian children on no-go trials on the right side of the scalp, p \u003c 0.05 (Chinese M = −9.13 μV, SE = 1.14; European M = −5.79 μV, SE = 1.05; Figure 4A), as well as on go trials on the left side of the scalp, p \u003c 0.05 (Chinese M = −7.66 μV, SE = 0.96; European M = −4.59 μV, SE = 0.89; Figure 4B), but that there were no group differences on no-go trials on the left or on go trials on the right. The three-way interaction reflected the fact that Chinese-Canadian children showed a stronger effect of laterality on no-go trials (ηp2=0.59) than did European-Canadian children on go trials (ηp2=0.16).\nFigure 4 Cultural group differences in N2 amplitudes (μV) by go/no-go condition. (A) Mean amplitudes for the right-hemisphere fronto-central cluster of electrodes (Hydrocel electrodes 112, 111, 118, 117, and 124). (B) Mean amplitudes for the left-hemisphere fronto-central cluster of electrodes (Hydrocel electrodes 13, 29, 20, 28, and 24).","divisions":[{"label":"title","span":{"begin":0,"end":10}},{"label":"p","span":{"begin":11,"end":682}},{"label":"figure","span":{"begin":683,"end":1155}},{"label":"label","span":{"begin":683,"end":691}},{"label":"caption","span":{"begin":693,"end":1155}},{"label":"p","span":{"begin":693,"end":1155}},{"label":"p","span":{"begin":1156,"end":2593}},{"label":"label","span":{"begin":2594,"end":2602}}],"tracks":[]}