ISSN 0439-755X
CN 11-1911/B

心理学报 ›› 2014, Vol. 46 ›› Issue (5): 569-580.doi: 10.3724/SP.J.1041.2014.00569

• 论文 •    下一篇



  1. (1华南师范大学心理应用研究中心, 心理学院, 广州 510631) (2香港大学脑与认知科学国家重点实验室, 香港)
  • 收稿日期:2012-09-12 发布日期:2014-05-24 出版日期:2014-05-24
  • 通讯作者: 莫雷
  • 基金资助:

    国家重点基础研究发展计划项目(2012CB720700); 国家自然科学基金(31170997)。

Brain Potentials to Speech and Acoustic Sound Discrimination Uncover the Origin of Individual Differences in Perceiving the Sounds of A Second Language

FAN Ruolin;MO Lei;XU Guiping;ZHONG Weifang;ZHOU Ying;YANG Li   

  1. (1 Center for Studies of Psychological Application; South China Normal University; Guangzhou 510631; China) (2 State Key Laboratory of Brain and Cognitive Sciences and Department of Linguistics; University of Hong Kong; Hong Kong; China)
  • Received:2012-09-12 Online:2014-05-24 Published:2014-05-24
  • Contact: MO Lei


本研究探讨个体二语语音辨别能力的差异来源。以母语为粤语(L1)的粤语-普通话双语者为研究对象, 根据被试的普通话二语(L2)的辨音能力, 将其分为二语辨音强组(GP)和二语辨音弱组(PP), 以失匹配负波(MMN)为电生理指标通过ERP实验分别考察了两组被试对语音和一般声音(复合音)的辨别差异。结果发现:无论是对母语语音辨别还是对跨语系第三种语言的语音辨别, 二语辨音强组的被试诱发的MMN波幅都显著大于二语辨音弱组的被试; 进一步, 对一般复合音的辨别, 二语辨音强组的被试诱发的MMN波幅也显著大于二语辨音弱组的被试。研究结果表明:二语语音辨别的个体差异不仅可以追溯到一般语音层面的辨音能力差异, 还可以进一步追溯到一般声音层面的复合音辨音能力差异。

关键词: 双语, 语音, 声音, 失匹配负波


As to the origin of individual differences in perceiving the sounds of a second language, the scientific community has been divided. There are two alternative explanations: a general psychoacoustic origin vs. a general speech one. A previous study (Díaz et al., 2008) has shown that such individual variability is linked to the perceivers’ general speech abilities. However, our research casts doubt on the conclusion for two reasons. Firstly, this study exclusively focused on speech sounds in the same language family, rather than explored the languages from different language families. It has only been proved that individual variability in L2 is related to varied sensitivities to the speech sounds within the same language family rather than in the general speech system including different language families. Moreover, the study selected pure tones as acoustic materials, neglecting another important acoustic signals, complex sounds. It is obvious that we can’t draw the conclusion that ability of processing general sounds has no impact on discrimination of speech sounds in L2, without studying complex tones. Here, studying speech sounds from different language families and complex sounds, the main purpose of present study was to explore whether the individual differences in perceiving L2 stem from their ability of processing general phonetic signals or phonetic stimuli within the specific language family, and farther explore whether such individual variability deeply stems from individual sensitivity to complex tones. In the present study, 14 L2 good perceivers (GP) and 14 L2 poor perceivers (PP), in order to participate in the following ERP experiment, were selected from 130 healthy Cantonese (L1)-mandarin (L2) bilinguals according to their performances in a behavior task. To precisely measure the participants’ sound discrimination, MMN elicited by oddball paradigm was recorded in the following experiment. The ERP experiment consists of three sections, including native speech sounds, speech sounds in different language families and complex tones. And every participant took part in all three material sections. The results showed that significant differences between GP and PP were found when the two groups were presented with all 3 stimuli: GP showed larger MMN responses to both phonetic and acoustic stimuli than PP. This result reveals individual differences in discriminating the sounds in L2 not only stem from their sensitivity to phonetic sounds but also ultimately from their sensitivity to acoustic signals.

Key words: bilingualism, phoneme, sound, mismatch negativity