Neural measures of a Japanese consonant length discrimination by Japanese and American English listeners: Effects of attention.
Neural measures of a Japanese consonant length discrimination by Japanese and American English listeners: Effects of attention.
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DOI：
10.1016/j.brainres.2015.06.001
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发表时间：
2015-11-11
期刊：
影响因子：
2.9
通讯作者：
Sussman ES
中科院分区：
文献类型：
--
作者：
Hisagi M;Shafer VL;Strange W;Sussman ES
本研究使用行为测量和事件相关电位（ERP）错配负性（MMN）研究了母语（日语）和非母语（美式英语）听者对日语辅音长度对比（mi / mi / mi / i）的自动性辨别。对听觉输入的注意力被操纵，要么通过一个视觉上古怪的任务（视觉注意）来远离听觉输入，要么通过要求听者计算听觉偏差（听觉注意）来转移到听觉输入。结果表明，当注意力集中在辅音对比上时，两组的MMN均大于远离辅音对比时的MMN。辅音持续时间增加的MMN大于减少的MMN。不同语言组之间的MMN没有差异，但日语听众确实比美国英语听众表现出更好的行为歧视。此外，行为反应与MMN振幅呈微弱但显著的相关性。这些发现表明，语音特性和语音经验都影响语音处理的自动性。
This study examined automaticity of discrimination of a Japanese length contrast for consonants (miʃi vs. miʃʃi) in native (Japanese) and non-native (American-English) listeners using behavioral measures and the event-related potential (ERP) mismatch negativity (MMN). Attention to the auditory input was manipulated either away from the auditory input via a visual oddball task (Visual Attend), or to the input by asking the listeners to count auditory deviants (Auditory Attend). Results showed a larger MMN when attention was focused on the consonant contrast than away from it for both groups. The MMN was larger for consonant duration increments than decrements. No difference in MMN between the language groups was observed, but the Japanese listeners did show better behavioral discrimination than the American English listeners. In addition, behavioral responses showed a weak, but significant correlation with MMN amplitude. These findings suggest that both acoustic-phonetic properties and phonological experience affects automaticity of speech processing.