Neurophysiological correlates of online word learning in 14-month-old infants
Neurophysiological correlates of online word learning in 14-month-old infants
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DOI：
10.1097/wnr.0b013e328318f014
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发表时间：
2008-12-03
期刊：
影响因子：
1.7
通讯作者：
Friederici, Angela D.
中科院分区：
文献类型：
--
作者：
Friedrich, Manuela;Friederici, Angela D.
在12到14个月之间，婴儿从慢速到快速的单词学习模式切换。参与这一发展的神经过程在很大程度上是未知的。本研究探讨了14个月大婴儿快速学习客体词映射的大脑活动。在对8个客体词对进行4次重复后，我们观察到婴儿事件相关电位研究中已知的两种启动效应：200-500 ms范围内由额侧负性诱发的词形式启动效应和由顶叶N400诱发的语义启动效应。这些神经生理学相关性表明，婴儿通过四次展示学习了客体词映射。在至少1天后应用的测试阶段，N400区分了训练过的一致和不一致配对，这表明这种新建立的参考知识已经在记忆中得到巩固。神经报告19:1757-1761 (C) 2008 Wolters Kluwer Health垂直条Lippincott Williams & Wilkins。
Between 12 and 14 months infants switch from slow to fast word learning mode. The neural processes involved in this development are largely unknown. This study explored the brain activity related to the fast learning of object-word mappings in 14-month-old infants. After four repetitions of eight object-word pairs, two priming effects known from earlier infant event-related potential studies were observed: word form priming indexed by the fronto-lateral negativity in the 200-500 ms range and semantic priming indexed by the parietal N400. These neurophysiological correlates suggest that infants have learned object-word mappings by four presentations. In a test phase applied at least I day later, the N400 differentiated between trained congruous and incongruous pairings, which indicates that this newly established referential knowledge has been consolidated in memory. NeuroReport 19:1757-1761 (C) 2008 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.