Abstract：
:Comparisons between backward and forward translation (BT, FT) have long illuminated the organization of bilingual memory, with neuroscientific evidence indicating that FT would involve greater linguistic and attentional demands. However, no study has directly assessed the functional interaction between relevant mechanisms. Against this background, we conducted the first fMRI investigation of functional connectivity (FC) differences between BT and FT. In addition to yielding lower behavioral outcomes, FT was characterized by increased FC between a core semantic hub (the left anterior temporal lobe, ATL) and key nodes of attentional and vigilance networks (left inferior frontal, left orbitofrontal, and bilateral parietal clusters). Instead, distinct FC patterns for BT emerged only between the left ATL and the right thalamus, a region implicated in automatic relaying of sensory information to cortical regions. Therefore, FT seems to involve enhanced coupling between semantic and attentional mechanisms, suggesting that asymmetries in cross-language processing reflect dynamic interactions between linguistic and domain-general systems.
journal_name
Brain Cognjournal_title
Brain and cognitionauthors
Zheng B,Báez S,Su L,Xiang X,Weis S,Ibáñez A,García AMdoi
10.1016/j.bandc.2020.105584subject
Has Abstractpub_date
2020-08-01 00:00:00pages
105584eissn
0278-2626issn
1090-2147pii
S0278-2626(20)30159-7journal_volume
143pub_type
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