Anterior insular thickness predicts speech sound learning ability in bilinguals.
Anterior insular thickness predicts speech sound learning ability in bilinguals.
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DOI：
10.1016/j.neuroimage.2017.10.038
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发表时间：
2018-01-15
期刊：
影响因子：
5.7
通讯作者：
Hernandez AE
中科院分区：
文献类型：
--
作者：
Rodriguez SM;Archila-Suerte P;Vaughn KA;Chiarello C;Hernandez AE
先前的一项关于新语音学习的fMRI研究，与本文提出的方法和结果相关联，确定了高级和新手学习者的群体，并将他们的分类与神经活动联系起来。为了补充这些结果并更好地阐明整个神经系统在语音学习中的作用，本研究分析了神经解剖学数据，目的是：1)揭示单语和双语成人样本中预测语音学习表现的兴趣区域（roi）； 2)检查所选roi的皮质厚度与个体学习能力之间的关系是否取决于语言群体。所选择的roi是在文献中确定的与语言和语音处理相关的大脑区域（即，颞上横回，前岛和后岛，均为双侧）。对23名西班牙-英语双语者和20名英语单语成人进行高分辨率脑扫描（t1加权）。左前脑岛厚度对双语者语音学习能力有显著预测作用，而对单语者无显著预测作用。这些结果表明，双语者学习新语言的能力与左前脑岛皮质厚度的变化有关。这些发现有助于我们深入了解语言感知的高级机制，并促进我们对双语大脑在语言学习过程中所采用的独特策略的理解。
A previous fMRI study of novel speech sound learning, tied to the methods and results presented here, identified groups of advanced and novice learners and related their classification to neural activity. To complement those results and better elucidate the role of the entire neural system in speech learning, the current study analyzed the neuroanatomical data with the goals of 1) uncovering the regions of interest (ROIs) that predicted speech learning performance in a sample of monolingual and bilingual adults, and 2) examining if the relationship between cortical thickness from selected ROIs and individual learning ability depends on language group. The ROIs selected were brain regions well-established in the literature as areas associated with language and speech processing (i.e., Transverse Superior Temporal Gyrus, anterior insula and posterior insula, all bilaterally). High-resolution brain scans (T1-weighted) were acquired from 23 Spanish-English bilinguals and 20 English monolingual adults. The thickness of the left anterior insula significantly predicted speech sound learning ability in bilinguals but not monolinguals. These results suggest that aptitude for learning a new language is associated with variations in the cortical thickness of the left anterior insula in bilinguals. These findings may provide insight into the higher order mechanisms involved in speech perception and advance our understanding of the unique strategies employed by the bilingual brain during language learning.
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影响因子：
2
作者：
Ardila, A
通讯作者：
Ardila, A
影响因子：
5.7
作者：
Blackmon, Karen;Barr, William B.;Kuzniecky, Ruben;DuBois, Jonathan;Carlson, Chad;Quinn, Brian T.;Blumberg, Mark;Halgren, Eric;Hagler, Donald J.;Mikhly, Mark;Devinsky, Orrin;McDonald, Carrie R.;Dale, Anders M.;Thesen, Thomas
通讯作者：
Thesen, Thomas
DOI：
10.1177/1367006914552206
发表时间：
2016
期刊：
The international journal of bilingualism : cross-disciplinary, cross-linguistic studies of language behavior
影响因子：
--
作者：
Archila-Suerte P;Bunta F;Hernandez AE
通讯作者：
Hernandez AE
影响因子：
2
作者：
Ardila, Alfredo;Bernal, Byron;Rosselli, Monica
通讯作者：
Rosselli, Monica
影响因子：
5.7
作者：
Destrieux, Christophe;Fischl, Bruce;Dale, Anders;Halgren, Eric
通讯作者：
Halgren, Eric