Age of acquisition impacts the brain differently depending on neuroanatomical metric.

ABSTRACT: Although researchers generally agree that a certain set of brain areas underlie bilingual language processing, there is discrepancy regarding what effect timing of language acquisition has on these regions. We aimed to investigate the neuroanatomical correlates of age of acquisition (AoA), which has been examined previously, but with inconsistent results, likely influenced by methodological differences across studies. We analyzed gray matter density, volume, and thickness using whole-brain linear models in 334 bilinguals and monolinguals. Neuroanatomical correlates of AoA differed depending on gray matter metric. Relative to early bilinguals, late bilinguals had thicker cortex in language processing and cognitive control regions, and greater density in multiple frontal areas and the right

SUBMITTER: Claussenius-Kalman H 

PROVIDER: S-EPMC7267963 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature