Event-related potential indicators of text integration across sentence boundaries.
Event-related potential indicators of text integration across sentence boundaries.
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DOI：
10.1037/0278-7393.33.1.55
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
C. Yang;C. Perfetti;F. Schmalhofer
中科院分区：
文献类型：
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作者：
C. Yang;C. Perfetti;F. Schmalhofer
一项事件相关电位 (ERP) 研究检查了跨句子边界的单词到文本的整合过程。在双句段落中，第二句的第一个内容词（目标词）的所指可访问性因第一句的措辞而变化，具体方式如下：词汇上（明确使用目标词的形式）；概念上（使用目标词的释义）和情境上（鼓励对目标词的所指对象进行推断）。基线条件在两个句子之间没有共指。目标词的 ERP 结果表明与词识别和词到指称映射过程相关的多种影响。显式条件和释义条件（但推理条件除外）均显示出相对于基线条件的 N400 降低，这与词汇语义过程的立即整合一致。在释义条件下发现了 300 毫秒效应 (P300)。结果与直接整合假设一致，并且进一步区分了该整合的词汇（N200）、概念（P300）和情境（N400）组件。概念基础似乎并未扩展到预测推论。
An event-related potentials (ERPs) study examined word-to-text integration processes across sentence boundaries. In a two-sentence passage, the accessibility of a referent for the first content word of the second sentence (the target word) was varied by the wording of the first sentence in one of the following ways: lexically (explicitly using a form of the target word); conceptually (using a paraphrase of the target word), and situationally (encouraging an inference concerning the referent of the target word). A baseline condition had no coreference between the two sentences. ERP results on the target word indicated multiple effects related to word identification and word-to-referent mapping processes. Both the explicit and paraphrase conditions, but not the inference condition, showed a reduced N400 relative to the baseline condition, consistent with immediate integration by lexico-semantic processes. A 300-ms effect (P300) was found in the paraphrase condition. The results were consistent with an immediate integration hypothesis and furthermore differentiated a lexical (N200), a conceptual (P300), and a situational (N400) component for this integration. The conceptual basis appears not to extend to predictive inferences.