ERPs reveal the Mechanisms of Bilingual Language Control

ERP 揭示双语语言控制机制

• 批准号: 10682744
• 负责人: Chuchu Li
• 金额: $ 24.9万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN DIEGO
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10682744
• 关键词: Address; Adopted; Advisory Committees; Affect; Articulation; Brain; Career Mobility; Cognitive; Communication; Comprehension; Data; Educational workshop; Electrophysiology (science); Ensure; Event; Event-Related Potentials; Fostering; Goals; Language; Language Development; Measurement; Measures; Mentors; Mentorship; Methodology; Modality; Monitor; Multilingualism; Neurocognitive; Pathway interactions; Phase; Play; Process; Production; Reading; Research; Research Project Grants; Role; Semantics; Societies; Speech; Structure; Time; Training; Work; behavior measurement; bilingualism; career; cognitive ability; control theory; cost; language comprehension; language processing; neuromechanism; phonology; prevent; programs; syntax; theories

Bilinguals have remarkable control abilities to prevent interference between languages in production and comprehension, two modalities that have different goals and go through different pathways. However, it still remains unclear if and to what extent language control mechanisms are shared or different across these two modalities. The proposed project will systematically compare language control mechanism in production versus comprehension at different processing levels. We will combine ERP (Event-Related Potential in the brain) measures and the mixed-language paragraph reading paradigm to reveal the neuro-cognitive processes of language switching in sentence context, modulating syntactic and phonological constraints. Bilinguals will read the same mixed-language paragraphs in production and comprehension tasks, with the only difference being if articulation is required. ERP measures will provide detailed information about how language control works as the language-switching event unfolds in real time. My Specific Aims are: Aim 1 (K99): to investigate the role of syntactic constraints in language control during production vs. comprehension by measuring bilinguals' ERPs on language switching with content vs. function words, which carry more semantic vs. syntactic information, respectively. In production, I expect larger costs switching function words, as these need more inhibition and monitoring, revealed by N2 and ERN respectively. If syntactic constraints equally affect production and comprehension, function switches should be more costly than content switches also in comprehension, revealed by P600/LPC, or even N400 as well. Alternatively, content switches might be more costly in comprehension, revealed by P600/LPC and N400, due to vague syntactic analysis and the priority to integrate semantic information. Aim 2 (R00): to investigate how phonological constraints influence language control during production vs. comprehension by measuring bilinguals' ERPs on intra-sentential language switches with cognates vs. noncognates. Cognates are words with cross-language phonological overlap (e.g., lemon-limón). I expect larger costs with cognate than noncognate switches in production, as more inhibition and monitoring are needed for cognates, revealed by N2 and ERN respectively. For comprehension, if language selection is also critical, switch costs with cognates may be larger than noncognates, revealed by N400 and/or P600/LPC. Otherwise, switch costs may be smaller with cognates than noncognates due to easier semantic integration with cognates, revealed at least by N400, or even by P600/LPC as well. My training in the K99 phase will include structured mentorship by my advisory committee on both theoretical framework (language production and comprehension, as well as bilingual language control) and the training of new methodology (ERP measures). It will also include formal course work, workshops, and a program of career transition. This career plan and research project will ensure my successful transition to independent research, fulfilling my career goal of understanding bilingual language processing in a comprehensive view. !

双语者具有卓越的控制能力，可以防止生产和语言之间的干扰 理解，两种方式有不同的目标并且经过不同的途径，但它仍然如此。 目前尚不清楚这两者之间的语言控制机制是否以及在何种程度上共享或不同 拟议的项目将系统地比较生产中的语言控制机制。 我们将结合 ERP（事件相关潜力） 大脑）测量和混合语言段落阅读范式来揭示神经认知过程 句子上下文中的语言切换，调节句法和语音限制。 在生成和理解任务中阅读相同的混合语言段落，唯一的区别 如果需要明确表达，ERP 措施将提供有关如何控制语言的详细信息。 随着语言转换事件实时展开，我的具体目标是： 目标 1 (K99)：调查。 句法约束在生产过程中的语言控制与通过测量的理解之间的作用 双语者在语言切换方面的 ERP 是实词与虚词，后者比虚词承载更多语义。 在生产中，我预计切换功能词的成本会更大，因为这些需要。 如果句法约束同样影响，则分别由 N2 和 ERN 揭示更多的抑制和监控。 生产和理解，功能切换应该比内容切换更昂贵 P600/LPC甚至N400也能提供理解能力，或者，内容切换可能会更多。 P600/LPC 和 N400 揭示，由于句法分析模糊且优先考虑，理解成本高昂 目标 2 (R00)：研究语音约束如何影响语言。 通过测量双语者对句子内语言的 ERP 来进行生产过程中的控制与理解 同源词与非同源词的转换是具有跨语言语音重叠的单词（例如， 柠檬-柠檬)。我预计生产中同源开关的成本比非同源开关更高，因为抑制作用更多。 需要对同源词进行监控，分别由 N2 和 ERN 揭示以便理解。 语言选择也很关键，同源词的转换成本可能比非同源词更大，研究表明 另外，N400 和/或 P600/LPC 的转换成本可能比非同源的更小，因为更容易。 与同源词的语义整合，至少由 N400 揭示，甚至由 P600/LPC 揭示。 K99 阶段将包括我的顾问委员会对理论框架的结构化指导 （语言产生和理解，以及双语语言控制）和新的培训 它还将包括正式课程、研讨会和职业计划。 这个职业计划和研究项目将确保我成功过渡到独立研究， 实现了我全面理解双语语言处理的职业目标。 ！