Journal article

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

Sergio Miguel Pereira Soares, Gabriel Ong, Jubin Abutalebi, Nicola Del Maschio, David Sewell, Brendan Weekes

Bilingualism: Language and Cognition | CAMBRIDGE UNIV PRESS | Published : 2019


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, ..

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Awarded by GRF grant - Research Grants Council of Hong Kong

Funding Acknowledgements

This research was supported by the GRF grant 754412 awarded by the Research Grants Council of Hong Kong and Seed Grants from the University of Hong Kong.