Neural correlates of single word reading in bilingual children and adults.
Neural correlates of single word reading in bilingual children and adults.
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DOI：
10.1016/j.bandl.2015.01.010
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发表时间：
2015-04
影响因子：
2.5
通讯作者：
Bradley KA
中科院分区：
文献类型：
--
作者：
Hernandez AE;Woods EA;Bradley KA
本研究比较了儿童和成人西班牙语-英语双语者语言处理的神经相关性。参与者被要求在使用功能磁共振成像扫描时用西班牙语和英语执行视觉词汇处理任务。儿童和成人都招募了类似的左半球“语言”区域网络，并表现出类似的西班牙语熟练程度。在行为方面，成年人相对于儿童表现出更好的英语语言能力。此外，在双侧 MTG 中观察到了成人的神经活动。在右侧 MTG 中观察到西班牙语中与年龄相关的差异。目前的结果证实，成人和儿童双语者在阅读每种语言的单词时，左半球的一组区域都存在神经活动。他们还表明，神经活动的差异并不完全是由视觉文字处理过程中语言熟练程度的变化驱动的。这表明技能发展和年龄都可以在整个发展过程中的大脑活动中发挥作用。
The present study compared the neural correlates of language processing in children and adult Spanish-English bilinguals. Participants were asked to perform a visual lexical processing task in both Spanish and English while being scanned with fMRI. Both children and adults recruited a similar network of left hemisphere “language” areas and showed similar proficiency profiles in Spanish. In terms of behavior, adults showed better language proficiency in English relative to children. Furthermore, neural activity in adults was observed in the bilateral MTG. Age-related differences were observed in Spanish in the right MTG. The current results confirm the presence of neural activity in a set of left hemisphere areas in both adult and child bilinguals when reading words in each language. They also reveal that differences in neural activity are not entirely driven by changes in language proficiency during visual word processing. This indicates that both skill development and age can play a role in brain activity seen across development.
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