Endogenous language control in Chinese-English switching: an event-related potentials study
Endogenous language control in Chinese-English switching: an event-related potentials study
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DOI：
10.1007/s12264-013-1427-7
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发表时间：
2014-03
影响因子：
5.6
通讯作者：
Zhen Jin;Jinxiang Zhang;Ling Li
中科院分区：
文献类型：
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作者：
Zhen Jin;Jinxiang Zhang;Ling Li
语言转换的神经基础，特别是内源性语言控制，在很大程度上仍然不清楚。本研究采用线索-刺激范式，通过测量行为指标和头皮事件相关电位，探讨了汉语和英语转换的内源性控制。在实验中，不平衡的汉语（L1）-英语（L2）说话者命名的图片在L1或L2根据听觉线索呈现700 ms（线索刺激间隔）之前的图片。转换条件下的反应时（RT）较长，L1（L2→L1）的转换成本（RT与重复条件下RT之差）大于L2（L1→L2）。P2成分显示L1的神经转换成本在额中央区，呈正态分布，而L2的转换成本不呈负态分布。第一语言在行为反应和神经活动中的转换成本更大，这表明额中央区在内源性语言控制中起着重要作用，转换回母语可能需要更多的内源性控制。
The neural basis of language switching, especially endogenous language control, remains largely unclear. We used a cue-stimulus paradigm and measured behavioral indices and scalp event-related potentials to investigate the endogenous control of switching between Chinese and English. In the experiment, unbalanced Chinese (L1) - English (L2) speakers named pictures in L1 or L2 according to an auditory cue presented 700 ms (cue-stimulus interval) before the picture onset. The reaction time (RT) was longer in the switch condition and the switch cost (difference of RTs between switch and repeat conditions) of L1 (L2→L1) was greater than L2 (L1→L2). P2 component elicited by the cue onset showed the neural switch cost of L1 at the frontocentral regions, with a leftward distribution, but not the switch cost of L2. The greater switch cost of L1 in behavioral responses and neural activity suggests that the frontocentral areas play an important role in endogenous language control, and switching back to the native language might require more endogenous control.