An ERP study of good production vis-à-vis poor perception of tones in Cantonese: implications for top-down speech processing.
An ERP study of good production vis-à-vis poor perception of tones in Cantonese: implications for top-down speech processing.
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DOI：
10.1371/journal.pone.0054396
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Kung C
中科院分区：
文献类型：
--
作者：
Law SP;Fung R;Kung C
本研究探讨了一个理论上具有挑战性的分离之间的良好的生产和穷人的感知声调的神经系统正常的粤语母语者。这种分离现象在社会语言学的音变研究中被称为近合并现象。在一个被动的oddball范式中，词汇和非词汇音节的T1/T6和T4/T6的对比，以引起不匹配负性（MMN）和P3 a从两组参与者，那些谁可以产生和区分所有的音调在语言（控制）和那些谁可以产生所有的音调，但具体未能区分T4和T6的知觉（分离）。在分离组中，词汇音节对T1/T6的MMN和对T4/T6的零反应的出现证实了近合并现象。对照组被试对T1/T6的词汇音节表现出统计学上可靠的MMN，对T1/T6的非词汇音节和T4/T6的词汇音节表现出较弱的反应，最后对T4/T6的非词汇音节表现出零反应，这表明自上而下的加工参与了言语知觉。此外，在相同实验条件下，对照组较分离组P3 a反应更强，可能表明对照组被试在注意转换、听觉注意或记忆方面的认知能力更强。这种认知差异，加上我们的推测，即在语音识别中没有完整的自下而上的声学信号分析的情况下，持续的自上而下的预测可能会降低人们对小声学对比的敏感性，解释了某些个体而不是其他个体发生解离的原因。
This study investigated a theoretically challenging dissociation between good production and poor perception of tones among neurologically unimpaired native speakers of Cantonese. The dissociation is referred to as the near-merger phenomenon in sociolinguistic studies of sound change. In a passive oddball paradigm, lexical and nonlexical syllables of the T1/T6 and T4/T6 contrasts were presented to elicit the mismatch negativity (MMN) and P3a from two groups of participants, those who could produce and distinguish all tones in the language (Control) and those who could produce all tones but specifically failed to distinguish between T4 and T6 in perception (Dissociation). The presence of MMN to T1/T6 and null response to T4/T6 of lexical syllables in the dissociation group confirmed the near-merger phenomenon. The observation that the control participants exhibited a statistically reliable MMN to lexical syllables of T1/T6, weaker responses to nonlexical syllables of T1/T6 and lexical syllables of T4/T6, and finally null response to nonlexical syllables of T4/T6, suggests the involvement of top-down processing in speech perception. Furthermore, the stronger P3a response of the control group, compared with the dissociation group in the same experimental conditions, may be taken to indicate higher cognitive capability in attention switching, auditory attention or memory in the control participants. This cognitive difference, together with our speculation that constant top-down predictions without complete bottom-up analysis of acoustic signals in speech recognition may reduce one’s sensitivity to small acoustic contrasts, account for the occurrence of dissociation in some individuals but not others.
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DOI：
10.1080/01690961003595572
发表时间：
2010-01-01
期刊：
LANGUAGE AND COGNITIVE PROCESSES
影响因子：
--
作者：
Hickok, Gregory
通讯作者：
Hickok, Gregory
影响因子：
3
作者：
Houlihan, M;Stelmack, R;Campbell, K
通讯作者：
Campbell, K
影响因子：
2
作者：
Hickok, G
通讯作者：
Hickok, G
影响因子：
2.6
作者：
GARCIALARREA, L;LUKASZEWICZ, AC;MAUGUIERE, F
通讯作者：
MAUGUIERE, F
影响因子：
2.9
作者：
Chandrasekaran, Bharath;Krishnan, Ananthanarayan;Gandour, Jackson T.
通讯作者：
Gandour, Jackson T.