Neural activation in speech production and reading aloud in native and non-native languages

NeuroImage
Jonathan A BerkenDenise Klein

Abstract

We used fMRI to investigate neural activation in reading aloud in bilinguals differing in age of acquisition. Three groups were compared: French-English bilinguals who acquired two languages from birth (simultaneous), French-English bilinguals who learned their L2 after the age of 5 years (sequential), and English-speaking monolinguals. While the bilingual groups contrasted in age of acquisition, they were matched for language proficiency, although sequential bilinguals produced speech with a less native-like accent in their L2 than in their L1. Simultaneous bilinguals activated similar brain regions to an equivalent degree when reading in their two languages. In contrast, sequential bilinguals more strongly activated areas related to speech-motor control and orthographic to phonological mapping, the left inferior frontal gyrus, left premotor cortex, and left fusiform gyrus, when reading aloud in L2 compared to L1. In addition, the activity in these regions showed a significant positive correlation with age of acquisition. The results provide evidence for the engagement of overlapping neural substrates for processing two languages when acquired in native context from birth. However, it appears that the maturation of certain bra...Continue Reading

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Citations

Oct 1, 2015·Brain Structure & Function·Jonathan A BerkenDenise Klein
Jul 7, 2020·Frontiers in Psychology·Xiaojin LiuRuiwang Huang
Dec 12, 2020·Neuropsychologia·Roberto A FerreiraGabriella Vigliocco
Aug 6, 2021·Frontiers in Human Neuroscience·Miriam Treutler, Peter Sörös
Oct 5, 2021·Cerebral Cortex·Kaija SanderDenise Klein
Feb 23, 2020·NeuroImage·Florence BouhaliLaurent Cohen

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