Additive Effects of Repetition and Predictability during Comprehension: Evidence from Event-Related Potentials
Additive Effects of Repetition and Predictability during Comprehension: Evidence from Event-Related Potentials
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DOI：
10.1371/journal.pone.0099199
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发表时间：
2014-06-06
期刊：
影响因子：
3.7
通讯作者：
Lau, Ellen
中科院分区：
文献类型：
--
作者：
Chow, Wing-Yee;Lago, Sol;Lau, Ellen
先前的研究表明，在句子理解过程中，神经对单词的反应对词汇重复和单词在上下文中的可预测性都很敏感。虽然以前的研究经常对比这些变量的影响（例如，通过观察单词重复违反重复水平限制的情况），但很少有人知道它们是如何协同工作的。在本研究中，我们考察了最近接触一个词和它在上下文中的可预测性如何结合联合收割机来影响词汇语义加工。我们设计了一个新的范式，结合阅读理解与识别记忆任务，允许一个词的可预测性和重复状态的正交操纵。使用事件相关脑电位（ERPs），我们表明，字重复和可预测性的N400振幅有定性相似和添加剂的影响。我们认为，先前接触一个词和可预测性影响词汇语义加工的附加和独立的方式
Previous research has shown that neural responses to words during sentence comprehension are sensitive to both lexical repetition and a word's predictability in context. While previous research has often contrasted the effects of these variables (e.g. by looking at cases in which word repetition violates sentence-level constraints), little is known about how they work in tandem. In the current study we examine how recent exposure to a word and its predictability in context combine to impact lexical semantic processing. We devise a novel paradigm that combines reading comprehension with a recognition memory task, allowing for an orthogonal manipulation of a word's predictability and its repetition status. Using event-related brain potentials (ERPs), we show that word repetition and predictability have qualitatively similar and additive effects on the N400 amplitude. We propose that prior exposure to a word and predictability impact lexical semantic processing in an additive and independent fashion