On the locus of talker-specificity effects in spoken word recognition: an ERP study with dichotic priming.
On the locus of talker-specificity effects in spoken word recognition: an ERP study with dichotic priming.
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关于口语单词识别中说话者特异性效应的轨迹：双歧启动的 ERP 研究。
DOI：
10.1080/23273798.2017.1335421
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Grainger,Jonathan
中科院分区：
文献类型：
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作者：
Dufour,Sophie;Bolger,Dierdre;Massol,Stephanie;Holcomb,PhillipJ;Grainger,Jonathan
我们使用事件相关电位来检查说话者特定信息在口语单词识别过程中发挥作用的确切时刻。双耳分听重复启动检查与启动在左无人值守的耳朵和目标在右出席的耳朵，我们操纵的词频和说话人的身份。在目标启动后100-200 ms的早期时间窗内观察到明显的重复启动效应，在650 - 800ms的时间窗内，目标词偏移后该效应继续存在。 重要的是，我们观察到说话者的变化只在N400时间窗内引起重复启动的减少，并且只对低频词，而不是高频词。总之，我们的研究结果表明，口语单词识别主要依赖于抽象表征，而说话者特定的信息主要影响这一过程的后期阶段，即词汇选择。
We used event-related potentials to examine the precise moment at which talker-specific information comes into play during spoken word recognition. Dichotic repetition priming was examined with primes presented in the left unattended ear and targets presented in the right attended ear, and we manipulated both word frequency and talker identity. A clear repetition priming effect was observed in an early time-window spanning 100–200 ms post-target onset, and the effect continued after target word offset in a time-window between 650 and 800 ms. Crucially, we observed that talker change caused a diminution in repetition priming only in the N400 time-window, and only for low frequency words but not for high frequency words. Together, our findings suggest that spoken word recognition relies primarily on abstract representations, and that talker-specific information mainly affects later stages of this process, namely lexical selection.