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A diffusion model approach to analyzing performance on the Flanker task : The role of the DLPFC

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2019

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Ong, Gabriel
Abutalebi, Jubin
Del Maschio, Nicola
Sewell, David
Weeks, Brendan

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https://doi.org/10.1017/S1366728918000974
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Bilingualism : Language and Cognition. Cambridge University Press. 2019, 22(5), pp. 1194-1208. ISSN 1366-7289. eISSN 1469-1841. Available under: doi: 10.1017/S1366728918000974

Zusammenfassung

The anterior cingulate cortex (ACC) and the dorsolateral prefrontal cortex (DLPFC) are involved in conflict detection and conflict resolution, respectively. Here, we investigate how lifelong bilingualism induces neuroplasticity to these structures by employing a novel analysis of behavioural performance. We correlated grey matter volume (GMV) in seniors reported by Abutalebi et al. (2015) with behavioral Flanker task performance fitted using the diffusion model (Ratcliff, 1978). As predicted, we observed significant correlations between GMV in the DLPFC and Flanker performance. However, for monolinguals the non-decision time parameter was significantly correlated with GMV in the left DLPFC, whereas for bilinguals the correlation was significant in the right DLPFC. We also found a significant correlation between age and GMV in left DLPFC and the non-decision time parameter for the conflict effect for monolinguals only. We submit that this is due to cumulative demands on cognitive control over a lifetime of bilingual language processing.

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400 Sprachwissenschaft, Linguistik

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aging, bilingualism, cognitive control, cognitive reserve, DLPFC, VBM

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ISO 690PEREIRA SOARES, Sergio Miguel, Gabriel ONG, Jubin ABUTALEBI, Nicola DEL MASCHIO, David SEWELL, Brendan WEEKS, 2019. A diffusion model approach to analyzing performance on the Flanker task : The role of the DLPFC. In: Bilingualism : Language and Cognition. Cambridge University Press. 2019, 22(5), pp. 1194-1208. ISSN 1366-7289. eISSN 1469-1841. Available under: doi: 10.1017/S1366728918000974
BibTex
@article{PereiraSoares2019diffu-54212,
  year={2019},
  doi={10.1017/S1366728918000974},
  title={A diffusion model approach to analyzing performance on the Flanker task : The role of the DLPFC},
  number={5},
  volume={22},
  issn={1366-7289},
  journal={Bilingualism : Language and Cognition},
  pages={1194--1208},
  author={Pereira Soares, Sergio Miguel and Ong, Gabriel and Abutalebi, Jubin and Del Maschio, Nicola and Sewell, David and Weeks, Brendan}
}
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