Learning a Second Language in Adulthood Changes Subcortical Neural Encoding

Second language learning has been shown to impact and reshape the central nervous system, anatomically and functionally. Most of the studies on second language learning and neuroplasticity have been focused on cortical areas, whereas the subcortical neural encoding mechanism and its relationship wit...

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Main Authors: Dongxin Liu, Shuo Wang, Qi Gao, Ruijuan Dong, Xinxing Fu, Esther Pugh, Jiong Hu
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2020/8836161
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author Dongxin Liu
Shuo Wang
Qi Gao
Ruijuan Dong
Xinxing Fu
Esther Pugh
Jiong Hu
author_facet Dongxin Liu
Shuo Wang
Qi Gao
Ruijuan Dong
Xinxing Fu
Esther Pugh
Jiong Hu
author_sort Dongxin Liu
collection DOAJ
description Second language learning has been shown to impact and reshape the central nervous system, anatomically and functionally. Most of the studies on second language learning and neuroplasticity have been focused on cortical areas, whereas the subcortical neural encoding mechanism and its relationship with L2 learning have not been examined extensively. The purpose of this study was to utilize frequency-following response (FFR) to examine if and how learning a tonal language in adulthood changes the subcortical neural encoding in hearing adults. Three groups of subjects were recruited: native speakers of Mandarin Chinese (native speakers (NS)), learners of the language (L2 learners), and those with no experience (native speakers of foreign languages (NSFL)). It is hypothesized that differences would exist in FFRs obtained from the three language experience groups. Results revealed that FFRs obtained from L2 learners were found to be more robust than the NSFL group, yet not on a par with the NS group. Such results may suggest that in human adulthood, subcortical neural encoding ability may be trainable with the acquisition of a new language and that neuroplasticity at the brainstem level can indeed be influenced by L2 learning.
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series Neural Plasticity
spelling doaj-art-01152c3148e948b680babada2330657e2025-02-03T06:05:35ZengWileyNeural Plasticity2090-59041687-54432020-01-01202010.1155/2020/88361618836161Learning a Second Language in Adulthood Changes Subcortical Neural EncodingDongxin Liu0Shuo Wang1Qi Gao2Ruijuan Dong3Xinxing Fu4Esther Pugh5Jiong Hu6Otolaryngology—Head & Neck Surgery, Beijing Tongren Hospital, Beijing Institute of Otolaryngology, Capital Medical University, Beijing, ChinaOtolaryngology—Head & Neck Surgery, Beijing Tongren Hospital, Beijing Institute of Otolaryngology, Capital Medical University, Beijing, ChinaOtolaryngology—Head & Neck Surgery, Beijing Tongren Hospital, Beijing Institute of Otolaryngology, Capital Medical University, Beijing, ChinaOtolaryngology—Head & Neck Surgery, Beijing Tongren Hospital, Beijing Institute of Otolaryngology, Capital Medical University, Beijing, ChinaOtolaryngology—Head & Neck Surgery, Beijing Tongren Hospital, Beijing Institute of Otolaryngology, Capital Medical University, Beijing, ChinaHouse Ear Institute, 2100 W 3rd St., Los Angeles, CA, USADepartment of Audiology, University of the Pacific, San Francisco, CA, USASecond language learning has been shown to impact and reshape the central nervous system, anatomically and functionally. Most of the studies on second language learning and neuroplasticity have been focused on cortical areas, whereas the subcortical neural encoding mechanism and its relationship with L2 learning have not been examined extensively. The purpose of this study was to utilize frequency-following response (FFR) to examine if and how learning a tonal language in adulthood changes the subcortical neural encoding in hearing adults. Three groups of subjects were recruited: native speakers of Mandarin Chinese (native speakers (NS)), learners of the language (L2 learners), and those with no experience (native speakers of foreign languages (NSFL)). It is hypothesized that differences would exist in FFRs obtained from the three language experience groups. Results revealed that FFRs obtained from L2 learners were found to be more robust than the NSFL group, yet not on a par with the NS group. Such results may suggest that in human adulthood, subcortical neural encoding ability may be trainable with the acquisition of a new language and that neuroplasticity at the brainstem level can indeed be influenced by L2 learning.http://dx.doi.org/10.1155/2020/8836161
spellingShingle Dongxin Liu
Shuo Wang
Qi Gao
Ruijuan Dong
Xinxing Fu
Esther Pugh
Jiong Hu
Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
Neural Plasticity
title Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
title_full Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
title_fullStr Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
title_full_unstemmed Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
title_short Learning a Second Language in Adulthood Changes Subcortical Neural Encoding
title_sort learning a second language in adulthood changes subcortical neural encoding
url http://dx.doi.org/10.1155/2020/8836161
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