Amsel Ben D, DeLong Katherine A, Kutas Marta
Department of Cognitive Science.
Department of Cognitive Science ; Department of Neurosciences.
J Mem Lang. 2015 Jul 1;82:118-132. doi: 10.1016/j.jml.2015.03.009.
Recent research has shown that language comprehension is guided by knowledge about the organization of objects and events in long-term memory. We use event-related brain potentials (ERPs) to determine the extent to which perceptuomotor object knowledge and event knowledge are immediately activated during incremental language processing. Event-related but anomalous sentence continuations preceded by single-sentence event descriptions elicited reduced N400s, despite their poor fit within local sentence contexts. Anomalous words sharing particular sensory or motor attributes with contextually expected words also elicited reduced N400s, despite being inconsistent with global context (i.e., event information). We rule out plausibility as an explanation for both relatedness effects. We show that perceptuomotor-related facilitation is not due to lexical priming between words in the local context and the target or to associative or categorical relationships between expected and unexpected targets. Overall our results are consistent with the immediate and incremental activation of perceptual and motor object knowledge and generalized event knowledge during sentence processing.
最近的研究表明，语言理解受长期记忆中有关物体和事件组织的知识引导。我们使用事件相关脑电位（ERP）来确定在增量语言处理过程中，感知运动物体知识和事件知识被即时激活的程度。尽管单句事件描述之后的事件相关但异常的句子延续在局部句子语境中不太合适，但仍引发了N400波幅降低。与语境预期单词共享特定感觉或运动属性的异常单词，尽管与整体语境（即事件信息）不一致，也引发了N400波幅降低。我们排除合理性作为这两种相关性效应的一种解释。我们表明，感知运动相关的促进作用并非由于局部语境中的单词与目标之间的词汇启动，也不是由于预期和意外目标之间的联想或分类关系。总体而言，我们的结果与句子处理过程中感知和运动物体知识以及广义事件知识的即时和增量激活相一致。
