EARLY CORTICAL PROCESSING OF LINGUISTIC PITCH PATTERNS AS REVEALED BY THE MISMATCH NEGATIVITY

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	EARLY CORTICAL PROCESSING OF LINGUISTIC PITCH PATTERNS AS REVEALED BY THE MISMATCH NEGATIVITY
	Ren, G. -Q.; Yang, Y.; Li, X.; Y. YANG
摘要	Previous brain imaging studies have shown the left hemispheric dominance for processing of lexical tone in native speakers. However, the low temporal resolution related to neuroimaging techniques might not explicitly detect the brain activities that occur at a relatively small or a determined time frame. We used the mismatch negativity (MMN) and a source estimation technique (low-resolution electromagnetic tomography [LORETA]) to probe the brain activities underlying the early pre-attentive processing of Mandarin lexical tone and intonation. A passive oddball paradigm was applied to present tone and intonation contrast in a speech and nonspeech context. The results showed that no difference of the MMN amplitudes existed between speech and nonspeech conditions, although a larger MMN was found for tone than intonation condition. Source localization of the MMNs for all of the conditions showed the right hemispheric dominance, regardless of their linguistic functions (tone vs. intonation) or speech context (speech vs. nonspeech). Interestingly, the MMN generator for normal tone and hummed tone originated from the same cortical area (right parietal lobe, BA 19). These findings suggest that the pre-attentive cortical processing can be modulated not only by speech stimuli, but also by their nonspeech hums. Our data are compatible with the acoustic hypothesis of speech processing.; Previous brain imaging studies have shown the left hemispheric dominance for processing of lexical tone in native speakers. However, the low temporal resolution related to neuroimaging techniques might not explicitly detect the brain activities that occur at a relatively small or a determined time frame. We used the mismatch negativity (MMN) and a source estimation technique (low-resolution electromagnetic tomography [LORETA]) to probe the brain activities underlying the early pre-attentive processing of Mandarin lexical tone and intonation. A passive oddball paradigm was applied to present tone and intonation contrast in a speech and nonspeech context. The results showed that no difference of the MMN amplitudes existed between speech and nonspeech conditions, although a larger MMN was found for tone than intonation condition. Source localization of the MMNs for all of the conditions showed the right hemispheric dominance, regardless of their linguistic functions (tone vs. intonation) or speech context (speech vs. nonspeech). Interestingly, the MMN generator for normal tone and hummed tone originated from the same cortical area (right parietal lobe, BA 19). These findings suggest that the pre-attentive cortical processing can be modulated not only by speech stimuli, but also by their nonspeech hums. Our data are compatible with the acoustic hypothesis of speech processing. Crown Copyright (C) 2009 Published by Elsevier Ltd on behalf of IBRO. All rights reserved.
关键词	auditory pitch mandarin Chinese lexical tone intonation mismatch negativity
学科领域	心理语言学
	2009-08-04
语种	英语
发表期刊	NEUROSCIENCE
ISSN	0306-4522
卷号	162 期号:1 页码:87-95
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000267200300010
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/5345
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Y. YANG
作者单位	Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China
第一作者单位	脑与认知科学国家重点实验室
推荐引用方式 GB/T 7714	Ren, G. -Q.,Yang, Y.,Li, X.,et al. EARLY CORTICAL PROCESSING OF LINGUISTIC PITCH PATTERNS AS REVEALED BY THE MISMATCH NEGATIVITY[J]. NEUROSCIENCE,2009,162(1):87-95.
APA	Ren, G. -Q.,Yang, Y.,Li, X.,&Y. YANG.(2009).EARLY CORTICAL PROCESSING OF LINGUISTIC PITCH PATTERNS AS REVEALED BY THE MISMATCH NEGATIVITY.NEUROSCIENCE,162(1),87-95.
MLA	Ren, G. -Q.,et al."EARLY CORTICAL PROCESSING OF LINGUISTIC PITCH PATTERNS AS REVEALED BY THE MISMATCH NEGATIVITY".NEUROSCIENCE 162.1(2009):87-95.

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