Numerous studies have investigated the neural correlates of reading in two languages. However, reliable conclusions have not been established as to the relationship of the neural correlates underlying reading in the first (L1) and second (L2) language. Here, we conduct meta-analyses to address this issue. We found that compared to L1, the left inferior parietal lobule showed greater activation during L2 processing across all bilingual studies. We then divided the literature into two categories: bilingual participants who learned two languages with different writing systems and bilinguals who learned two languages with similar writing systems. We found that language differences in the neural correlates of reading were generally modulated by writing system similarity, except the region of the left inferior parietal lobule, which showed preferences for L2 reading in both types of bilinguals. These findings provide new insights into the brain mechanisms underlying reading in bilinguals.

中文翻译：

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跨书写系统阅读：第一语言和第二语言阅读的神经关联元分析

许多研究调查了两种语言阅读的神经相关性。然而，关于第一语言（L1）和第二语言（L2）阅读的神经相关性之间的关系，还没有建立可靠的结论。在这里，我们进行荟萃分析来解决这个问题。我们发现，与 L1 相比，在所有双语研究中，左侧顶叶下小叶在 L2 处理过程中表现出更大的激活。然后，我们将文献分为两类：学习两种具有不同书写系统的语言的双语参与者和学习两种具有相似书写系统的语言的双语参与者。我们发现阅读的神经相关性中的语言差异通常受到书写系统相似性的调节，除了左顶下小叶区域，这显示了两种双语者对二语阅读的偏好。这些发现为双语阅读背后的大脑机制提供了新的见解。