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Electrophysiological cross-language neighborhood density effects in late and early english-welsh bilinguals.

Grossi G, Savill N, Thomas E, Thierry G - Front Psychol (2012)

Bottom Line: This effect interacted with language in the 300-500 ms time window.A more complex pattern of early effects was revealed in early bilinguals and there were no effects in the N400 window.These results suggest that CL activation of orthographic neighbors is highly sensitive to the bilinguals' learning experience of the two languages.

View Article: PubMed Central - PubMed

Affiliation: State University of New York at New Paltz New Paltz, NY, USA.

ABSTRACT
Behavioral studies with proficient late bilinguals have revealed the existence of orthographic neighborhood density (ND) effects across languages when participants read either in their first (L1) or second (L2) language. Words with many cross-language (CL) neighbors have been found to elicit more negative event-related potentials (ERPs) than words with few CL neighbors (Midgley et al., 2008); the effect started earlier, and was larger, for L2 words. Here, 14 late and 14 early English-Welsh bilinguals performed a semantic categorization task on English and Welsh words presented in separate blocks. The pattern of CL activation was different for the two groups of bilinguals. In late bilinguals, words with high CLND elicited more negative ERP amplitudes than words with low CLND starting around 175 ms after word onset and lasting until 500 ms. This effect interacted with language in the 300-500 ms time window. A more complex pattern of early effects was revealed in early bilinguals and there were no effects in the N400 window. These results suggest that CL activation of orthographic neighbors is highly sensitive to the bilinguals' learning experience of the two languages.

No MeSH data available.


Related in: MedlinePlus

Difference voltage maps representing the cross-language ND effect (high ND – low ND) in late bilinguals and mean grand-averages ERPs at the site where the effect was largest (negative is plotted up).
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Figure 3: Difference voltage maps representing the cross-language ND effect (high ND – low ND) in late bilinguals and mean grand-averages ERPs at the site where the effect was largest (negative is plotted up).

Mentions: Analyses conducted on lateral and medial electrodes showed that ERP amplitudes were more negative for high compared to low CLND targets in this time window [F(1,13) = 4.68, p = 0.05]; this effect interacted with Hemisphere and Laterality. Follow-up analyses showed that CLND was significant as a main effect over the left hemisphere sites [F(1,13) = 5.45, p < 0.04]; over the right hemisphere sites, ND was significant only over medial sites [ND × Laterality, F(1,13) = 9.5, p = 0.009; medial sites, p < 0.05; over right lateral sites, a significant interaction between ND and Language was observed at the 0.05 level, but analyses carried out separately for the two languages did not reveal any significant ND effect]. Therefore, overall, the CLND effect (more negative ERPs to high than low CLND targets) was more robust over the left hemisphere sites and over the medial sites (Figure 3). This main effect did not interact with Language (all p’s > 0.1). These results were confirmed by midline analyses (ND, F(1,13) = 9.25, p = 0.009; no significant interactions between Language and CLND were observed, all p’s > 0.11).


Electrophysiological cross-language neighborhood density effects in late and early english-welsh bilinguals.

Grossi G, Savill N, Thomas E, Thierry G - Front Psychol (2012)

Difference voltage maps representing the cross-language ND effect (high ND – low ND) in late bilinguals and mean grand-averages ERPs at the site where the effect was largest (negative is plotted up).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3475346&req=5

Figure 3: Difference voltage maps representing the cross-language ND effect (high ND – low ND) in late bilinguals and mean grand-averages ERPs at the site where the effect was largest (negative is plotted up).
Mentions: Analyses conducted on lateral and medial electrodes showed that ERP amplitudes were more negative for high compared to low CLND targets in this time window [F(1,13) = 4.68, p = 0.05]; this effect interacted with Hemisphere and Laterality. Follow-up analyses showed that CLND was significant as a main effect over the left hemisphere sites [F(1,13) = 5.45, p < 0.04]; over the right hemisphere sites, ND was significant only over medial sites [ND × Laterality, F(1,13) = 9.5, p = 0.009; medial sites, p < 0.05; over right lateral sites, a significant interaction between ND and Language was observed at the 0.05 level, but analyses carried out separately for the two languages did not reveal any significant ND effect]. Therefore, overall, the CLND effect (more negative ERPs to high than low CLND targets) was more robust over the left hemisphere sites and over the medial sites (Figure 3). This main effect did not interact with Language (all p’s > 0.1). These results were confirmed by midline analyses (ND, F(1,13) = 9.25, p = 0.009; no significant interactions between Language and CLND were observed, all p’s > 0.11).

Bottom Line: This effect interacted with language in the 300-500 ms time window.A more complex pattern of early effects was revealed in early bilinguals and there were no effects in the N400 window.These results suggest that CL activation of orthographic neighbors is highly sensitive to the bilinguals' learning experience of the two languages.

View Article: PubMed Central - PubMed

Affiliation: State University of New York at New Paltz New Paltz, NY, USA.

ABSTRACT
Behavioral studies with proficient late bilinguals have revealed the existence of orthographic neighborhood density (ND) effects across languages when participants read either in their first (L1) or second (L2) language. Words with many cross-language (CL) neighbors have been found to elicit more negative event-related potentials (ERPs) than words with few CL neighbors (Midgley et al., 2008); the effect started earlier, and was larger, for L2 words. Here, 14 late and 14 early English-Welsh bilinguals performed a semantic categorization task on English and Welsh words presented in separate blocks. The pattern of CL activation was different for the two groups of bilinguals. In late bilinguals, words with high CLND elicited more negative ERP amplitudes than words with low CLND starting around 175 ms after word onset and lasting until 500 ms. This effect interacted with language in the 300-500 ms time window. A more complex pattern of early effects was revealed in early bilinguals and there were no effects in the N400 window. These results suggest that CL activation of orthographic neighbors is highly sensitive to the bilinguals' learning experience of the two languages.

No MeSH data available.


Related in: MedlinePlus