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Electrophysiological correlates of language switching in second language learners

机译：第二语言学习者语言转换的电生理相关性

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This study analyzed the electrophysiological correlates of language switching in second language learners. Participants were native Spanish speakers classified in two groups according to English proficiency (high and low). Event-related potentials (ERPs) were recorded while they read English sentences, half of which contained an adjective in Spanish in the middle of the sentence. The ERP results show the time-course of language switch processing for both groups: an initial detection of the switch driven by language-specific orthography (left-occipital N250) followed by costs at the level of the lexico-semantic system (N400), and finally a late updating or reanalysis process (LPC). In the high proficiency group, effects in the N400 time window extended to left anterior electrodes and were followed by larger LPC amplitudes at posterior sites. These differences suggest that proficiency modulates the different processes triggered by language switches.
机译：这项研究分析了第二语言学习者语言转换的电生理相关性。参加者为讲西班牙语的母语人士，根据英语水平（高和低）分为两类。与事件相关的电位（ERP）在他们阅读英语句子时被记录下来，其中一半在句子中间包含一个西班牙语的形容词。 ERP结果显示了两组语言转换的时程：由特定语言的拼字法（左枕N250）驱动的转换的初始检测，然后是词汇语义系统（N400）级别的成本，最后是后期更新或重新分析过程（LPC）。在高水平组中，在N400时间窗口中的作用扩展到左前电极，随后在后位点有更大的LPC振幅。这些差异表明，熟练程度会调节由语言切换触发的不同过程。

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