期刊
BRAIN AND LANGUAGE
卷 128, 期 1, 页码 34-40出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bandl.2013.11.006
关键词
Bilingualism; Brainstem; Electrophysiology; Auditory
资金
- Mathers Foundation
- Knowles Hearing Center, Northwestern University
- NSF [SMA1015614]
- NIH [DC009399, HD059858]
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT [R01HD059858] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS [T32DC009399] Funding Source: NIH RePORTER
Auditory processing is presumed to be influenced by cognitive processes - including attentional control - in a top-down manner. In bilinguals, activation of both languages during daily communication hones inhibitory skills, which subsequently bolster attentional control. We hypothesize that the heightened attentional demands of bilingual communication strengthens connections between cognitive (i.e., attentional control) and auditory processing, leading to greater across-trial consistency in the auditory evoked response (i.e., neural consistency) in bilinguals. To assess this, we collected passively-elicited auditory evoked responses to the syllable [da] in adolescent Spanish-English bilinguals and English monolinguals and separately obtained measures of attentional control and language ability. Bilinguals demonstrated enhanced attentional control and more consistent brainstem and cortical responses. In bilinguals, but not monolinguals, brainstem consistency tracked with language proficiency and attentional control. We interpret these enhancements in neural consistency as the outcome of strengthened attentional control that emerged from experience communicating in two languages. (C) 2013 Elsevier Inc. All rights reserved.
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