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Neural correlates of acoustic cues of English lexical stress in Cantonese-speaking children

机译：粤语儿童英语词汇重音声学提示的神经相关

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摘要

The present study investigated the temporal course of neural discriminations of acoustic cues of English lexical stress (i.e., pitch, intensity and duration) in Cantonese-speaking children. We used an event-related potential (ERP) measure with a multiple-deviant oddball paradigm to record auditory mismatch responses to four deviants, namely, a change in pitch, intensity, or duration, or a change in all three acoustic dimensions, of English lexical stress in familiar words. In the time window of 170-270 ms, we found that the pitch deviant elicited significant positive mismatch responses (p-MMRs) and that the duration deviant elicited a mismatch negativity (MMN) response as compared with the standard. In the time window of 270-400 ms, the intensity deviant elicited a significant p-MMR, whereas both the duration and the three-dimension changed deviants elicited significant MMNs. These results suggest that Cantonese-speaking children are sensitive to either single or convergent acoustic cues of English words, and that the relative weighting of pitch, intensity and duration in stress processing may correlate with different ERP components at different time windows in Cantonese second graders. (C) 2014 Elsevier Inc. All rights reserved.
机译：本研究调查了讲粤语的儿童英语词汇重音（即音调，强度和持续时间）的声音提示的神经辨别的时间过程。我们使用事件相关电位（ERP）量度和多偏差奇数球范例来记录对四个偏差的听觉失配反应，即音调，强度或持续时间的变化，或所有三个声学维度的变化，英语用熟悉的单词来强调词汇。与标准相比，在170-270 ms的时间窗口中，音高偏差引起明显的正失配响应（p-MMRs），持续时间偏差引起失配负（MMN）响应。在270-400 ms的时间窗口中，强度偏差导致显着的p-MMR，而持续时间和三维变化偏差均引起显着的MMN。这些结果表明，讲粤语的孩子对英语单词的单个或会聚提示敏感，并且在广东二年级学生中，压力处理过程中音调，强度和持续时间的相对权重可能与不同ERP组件相关。 （C）2014 Elsevier Inc.保留所有权利。

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