The depth of semantic processing modulates cross-language pattern similarity in Chinese–English bilinguals,Human Brain Mapping

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The depth of semantic processing modulates cross-language pattern similarity in Chinese–English bilinguals
Human Brain Mapping ( IF 3.5 ) Pub Date : 2022-12-29 , DOI: 10.1002/hbm.26195
Huiling Li _{1,

2,

3} , Ying Cao _{1,

2,

3} , Chuansheng Chen ₄ , Xiaoyu Liu _{1,

2,

3} , Shuo Zhang _{1,

2,

3} , Leilei Mei ₁

Affiliation

Previous studies have investigated factors related to the degree of cross-language overlap in brain activations in bilinguals/multilinguals. However, it is still unclear whether and how the depth of semantic processing (a critical task-related factor) affects the neural pattern similarity between native and second languages. To address this question, 26 Chinese–English bilinguals were scanned with fMRI while performing a word naming task (i.e., a task with shallow semantic processing) and a semantic judgment task (i.e., a task with deep semantic processing) in both native and second languages. Based on three sets of representational similarity analysis (whole brain, ROI-based, and within-language vs. cross-language semantic representation), we found that select regions in the reading brain network showed higher cross-language pattern similarity and higher cross-language semantic representations during deep semantic processing than during shallow semantic processing. These results suggest that compared to shallow semantic processing, deep semantic processing may lead to greater language-independent processing (i.e., cross-language semantic representation) and cross-language pattern similarity, and provide direct quantitative neuroimaging evidence for cognitive models of bilingual lexical memory.

中文翻译：

语义处理的深度调节汉英双语者的跨语言模式相似性

先前的研究调查了与双语/多语者大脑激活中跨语言重叠程度相关的因素。然而，语义处理的深度（一个与任务相关的关键因素）是否以及如何影响母语和第二语言之间的神经模式相似性，目前尚不清楚。为了解决这个问题，26 名汉英双语者在执行单词命名任务（即浅层语义处理任务）和语义判断任务（即深度语义处理任务）时使用 fMRI 进行扫描，同时使用母语和第二语。语言。基于三组表征相似性分析（全脑、基于 ROI 和语言内与跨语言语义表征），我们发现阅读大脑网络中的选定区域在深度语义处理期间比在浅层语义处理期间显示出更高的跨语言模式相似性和更高的跨语言语义表示。这些结果表明，与浅层语义处理相比，深层语义处理可能导致更大的语言无关处理（即跨语言语义表示）和跨语言模式相似性，并为双语词汇记忆的认知模型提供直接的定量神经影像学证据.

更新日期：2022-12-29

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