句子处理中事件相关与时间频率违反反应之间的反向关系。
An inverse relation between event-related and time-frequency violation responses in sentence processing.
作者信息
Davidson D J, Indefrey P
机构信息
F.C. Donders Centre for Cognitive Neuroimaging, Max Planck Institute for Psycholinguistics, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
出版信息
Brain Res. 2007 Jul 16;1158:81-92. doi: 10.1016/j.brainres.2007.04.082. Epub 2007 May 21.
The relationship between semantic and grammatical processing in sentence comprehension was investigated by examining event-related potential (ERP) and event-related power changes in response to semantic and grammatical violations. Sentences with semantic, phrase structure, or number violations and matched controls were presented serially (1.25 words/s) to 20 participants while EEG was recorded. Semantic violations were associated with an N400 effect and a theta band increase in power, while grammatical violations were associated with a P600 effect and an alpha/beta band decrease in power. A quartile analysis showed that for both types of violations, larger average violation effects were associated with lower relative amplitudes of oscillatory activity, implying an inverse relation between ERP amplitude and event-related power magnitude change in sentence processing.
通过检测与语义和语法违规相关的事件相关电位（ERP）及事件相关功率变化，研究了句子理解中语义和语法加工之间的关系。向20名参与者依次呈现包含语义、短语结构或数字违规的句子以及匹配的对照句子（每秒1.25个单词），同时记录脑电图。语义违规与N400效应及θ频段功率增加相关，而语法违规与P600效应及α/β频段功率降低相关。四分位数分析表明，对于两种类型的违规，较大的平均违规效应与较低的振荡活动相对振幅相关，这意味着在句子加工中ERP振幅与事件相关功率大小变化之间存在反比关系。
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