优化非侵入性迷走神经刺激参数,促进发育典型的年轻人学习第二语言

IF 1.2 3区 心理学 Q2 LINGUISTICS
Vishal J. Thakkar , Jordan E. Crupper , Abby S. Engelhart , Tracy M. Centanni
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引用次数: 0

摘要

尽管掌握第二语言(L2)并流利使用该语言的能力对越来越多的人有益,但要在成年后掌握这种技能却难上加难。虽然传统的面授和电脑培训项目可以帮助这一过程,但学习速度往往很慢,而且保持率也很低。对于那些需要或希望日后流利掌握第二语言的人来说,一种能在语言学习过程中促进神经可塑性持久发展的方法是非常有价值的。然而,人们对神经调控方法对语言学习的影响知之甚少。在本研究中,我们调查了非侵入性经皮耳廓迷走神经刺激(taVNS)对健康年轻人词汇学习的影响。重要的是,我们通过研究经皮迷走神经刺激(taVNS)的两个关键参数--刺激频率(实验 1)和电流强度(实验 2)来探讨这一研究问题。发育正常的青壮年完成了为期 1 小时的训练,在此期间,他们学习了 30 个具体的帕劳语名词,同时接受了对左耳后外耳的真实或虚假刺激(实验 1)或不同强度的刺激(实验 2)。参与者在训练后立即完成帕劳语到英语的翻译测试,并在七天后完成测试,以量化学习和记忆情况。结果表明,高于感觉阈值的高频刺激提高了所学单词的保留率。这些结果表明,taVNS 可以提高第二语言词汇的保持率,而刺激频率可能会影响效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Parameter optimization of non-invasive vagus nerve stimulation for second language learning in typically developing young adults

Although the ability to acquire a second language (L2) and attain fluency in that language is beneficial for a growing number of people, it is significantly more difficult to acquire such skills in adulthood. While traditional in-person and computer training programs can aid in this process, learning is often slow and retention is quite poor. A method for driving long-lasting neural plasticity during language learning would be valuable for those who need or want to achieve fluency in a second language later in life. However, little is known about the effect of neuromodulation methods on language learning. In the current study, we investigated the effect of non-invasive transcutaneous auricular vagus nerve stimulation (taVNS) on vocabulary word-learning in healthy young adults. Importantly, we approached this research question by investigating two key parameters of taVNS, stimulation frequency (Experiment 1) and current intensity (Experiment 2). Typically developing young adults completed a 1-h training session in which they learned 30 concrete, Palauan nouns while receiving real or sham stimulation to the left posterior tragus (Experiment 1) or stimulation at various intensities (Experiment 2). Participants completed a Palau-to-English translation test immediately after training and seven days later to quantify learning and retention. The results largely revealed that high frequency stimulation above sensory threshold improved retention of learned words. These results suggest that taVNS may improve retention of vocabulary words in a second language and that stimulation frequency may impact efficacy.

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来源期刊
Journal of Neurolinguistics
Journal of Neurolinguistics 医学-神经科学
CiteScore
3.90
自引率
5.00%
发文量
49
审稿时长
17.2 weeks
期刊介绍: The Journal of Neurolinguistics is an international forum for the integration of the neurosciences and language sciences. JNL provides for rapid publication of novel, peer-reviewed research into the interaction between language, communication and brain processes. The focus is on rigorous studies of an empirical or theoretical nature and which make an original contribution to our knowledge about the involvement of the nervous system in communication and its breakdowns. Contributions from neurology, communication disorders, linguistics, neuropsychology and cognitive science in general are welcome. Published articles will typically address issues relating some aspect of language or speech function to its neurological substrates with clear theoretical import. Interdisciplinary work on any aspect of the biological foundations of language and its disorders resulting from brain damage is encouraged. Studies of normal subjects, with clear reference to brain functions, are appropriate. Group-studies on well defined samples and case studies with well documented lesion or nervous system dysfunction are acceptable. The journal is open to empirical reports and review articles. Special issues on aspects of the relation between language and the structure and function of the nervous system are also welcome.
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