Electrophysiological Chronometry of Semantic Context Effects in Language Production
Electrophysiological Chronometry of Semantic Context Effects in Language Production
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DOI：
10.1162/jocn.2010.21474
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发表时间：
2011-07-01
影响因子：
3.2
通讯作者：
Abdel Rahman, Rasha
中科院分区：
文献类型：
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作者：
Aristei, Sabrina;Melinger, Alissa;Abdel Rahman, Rasha
在这项研究中，我们利用事件相关脑电位研究了语义语境对语言产生的影响，这些脑电位提取自显性语言产生过程中持续记录的脑电图。我们结合图片-单词干扰范式和语义阻塞范式，研究了语义促进和干扰效应的时间动态和功能位点。对象在语义同构块（由相关对象组成）和异构块（由不相关对象组成）上下文中命名。在每个阻塞条件下，出现语义相关和语义不相关的干扰词。结果表明，语义诱导的促进和干扰效应的经典模式与位于颞叶和额叶的ERP调制直接相关，始于约200 msec。结果还表明，与语义促进效应和干扰效应相关的过程（即概念加工和词汇加工）具有高度的互动性和重合性。讨论了事件相关脑电位在语音产生研究中的应用，以及对当前语音产生模型的影响。
In this study, we investigated semantic context effects in language production with event-related brain potentials, extracted from the ongoing EEG recorded during overt speech production. We combined the picture-word interference paradigm and the semantic blocking paradigm to investigate the temporal dynamics and functional loci of semantic facilitation and interference effects. Objects were named in the context of semantically homogeneous blocks consisting of related objects and heterogeneous blocks consisting of unrelated objects. In each blocking condition, semantically related and unrelated distractor words were presented. Results show that classic patterns of semantically induced facilitation and interference effects in RTs can be directly related to ERP modulations located at temporal and frontal sites, starting at about 200 msec. Results also suggest that the processes associated with semantic facilitation and interference effects (i.e., conceptual and lexical processing) are highly interactive and coincide in time. Implications for the use of event-related brain potentials in speech production research and implications for current models of speech production are discussed.