第二语言语音生成中的任务生成过程:探索无声停顿期间任务复杂性的神经相关性

IF 4.2 1区 文学 Q1 LINGUISTICS
Andrea Révész, Hyeonjeong Jeong, Shungo Suzuki, Haining Cui, Shunsui Matsuura, Kazuya Saito, Motoaki Sugiura
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引用次数: 0

摘要

过去三十年来,在理解和描述任务复杂性对学习者内部过程的影响方面取得了重大进展。然而,研究人员主要采用行为学方法来研究任务产生的认知负荷。作为首次采用神经影像学方法研究第二语言(L2)任务效应的研究人员,我们旨在为第二语言口语表达中与任务相关的变化的神经相关性提供新的见解。为了推进研究方法,我们还测试了神经成像技术--功能性磁共振成像(fMRI)--在结合认知行为工具(语音分析、专家和学习者判断)研究任务相关变量对 L2 言语生成的影响时的实用性。我们的研究重点是任务复杂性对无声停顿的影响。24 名日语英语学习者完成了 8 个简单和复杂版本的决策任务,其中一半使用母语,一半使用第二语言。本研究的数据集包括 L2 语音和 fMRI 数据、专家判断以及参与者对所完成的 L1 和 L2 任务的难度评分。根据我们的研究结果,我们得出结论:在检测任务复杂性效应方面,脑成像和 L1 任务难度评分比 L2 自我评分和停顿测量更敏感。这些结果表明,在研究基于任务的神经认知过程时,将认知数据和神经数据进行三角测量是有好处的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Task-generated processes in second language speech production: Exploring the neural correlates of task complexity during silent pauses

The last three decades have seen significant development in understanding and describing the effects of task complexity on learner internal processes. However, researchers have primarily employed behavioral methods to investigate task-generated cognitive load. Being the first to adopt neuroimaging to study second language (L2) task effects, we aimed to provide novel insights into the neural correlates of task-related variation in L2 oral production. To advance research methodology, we also tested the utility of a neuroimaging technique, functional magnetic resonance imaging (fMRI), in examining the impact of task-related variables on L2 speech production when combined with cognitive–behavioral tools (speech analysis, expert and learner judgments). Our research focus was the effects of task complexity on silent pausing. Twenty-four Japanese learners of English completed eight simple and complex versions of decision-making tasks, half in their first language and half in their L2. The dataset for the present study included the L2 speech and fMRI data, expert judgments, and participants’ difficulty ratings of the L1 and L2 tasks they completed. Based on our findings, we concluded that brain imaging and L1 task difficulty ratings were more sensitive to detecting task complexity effects than L2 self-ratings and pausing measures. These results point to the benefits of triangulating cognitive and neural data to study task-based neurocognitive processes.

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来源期刊
CiteScore
8.00
自引率
9.80%
发文量
52
期刊介绍: Studies in Second Language Acquisition is a refereed journal of international scope devoted to the scientific discussion of acquisition or use of non-native and heritage languages. Each volume (five issues) contains research articles of either a quantitative, qualitative, or mixed-methods nature in addition to essays on current theoretical matters. Other rubrics include shorter articles such as Replication Studies, Critical Commentaries, and Research Reports.
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