HOW ACCENTUATION INFLUENCES SEMANTIC SHORT-TERM MEMORY REPRESENTATIONS DURING ON-LINE SPEECH PROCESSING: AN EVENT-RELATED POTENTIAL STUDY

	HOW ACCENTUATION INFLUENCES SEMANTIC SHORT-TERM MEMORY REPRESENTATIONS DURING ON-LINE SPEECH PROCESSING: AN EVENT-RELATED POTENTIAL STUDY
	Ll, X-Q.1 ; Lu, Y.2; Ll, XQ (reprint author), Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China.
心理所单位排序	2
摘要	In the present study, the ERP (event-related brain potentials) technique was used to investigate how accentuation influences the semantic short-term memory representations during on-line speech processing, and how this accentuation effect interacts with the distance of accentuation in the speech signal. Chinese spoken sentences were used as stimuli. The sentences included two critical words: Noun1 and Noun2, with the ERP time-locked to Noun2. During sentence comprehension, when the listener hears Noun2, he needs to retrieve Noun1 from the working memory and integrate it with Noun2. We manipulated the (de-)accentuation of Noun1 and the semantic relationship between Noun1 and Noun2 by changing Noun1 in the sentence context. Moreover, we manipulated the distance of accentuation (distance between Noun1 and Noun2) by changing the syntactic structure of the sentences. The results revealed a significant main effect of semantic relatedness, indicating that the low semantic relatedness condition elicited a larger N400 than the high semantic relatedness condition. Importantly, there was a significant two-way interaction between semantic relatedness and accentuation and a significant three-way interaction between semantic relatedness, accentuation, and distance. Further analysis demonstrated that, the semantic relatedness effect was modulated by accentuation in the long-distance sentences, but not in the short-distance sentences. That is, in the long-distance sentences, the semantic relatedness effect reached significance only when the to-be-integrated expression in the preceding sentence context was accented; however, in the short-distance sentences, the semantic relatedness effects reached significance regardless of the presence or absence of accentuation. The results indicated that, during on-line speech processing, accentuation can enhance the corresponding information's semantic short-term memory representation, and that the effect of accentuation on semantic short-term memory is somewhat flexible and shows up only when the words in the speech signal were far apart. (C) 2011 IBRO. Published by Elsevier Ltd. All rights reserved.
关键词	event-related potentials accentuation semantic short-term representations speech processing
学科领域	Cognitive Psychology,Cognitive Neuroscience
	2011-10-13
语种	英语
发表期刊	NEUROSCIENCE
ISSN	0306-4522
卷号	193 期号:1 页码:217-228
期刊论文类型	Article
URL	查看原文
收录类别	SCI
项目简介	This research was supported by Grants from the National Natural Science Foundation of China (30800296) and Foundation for the Author of National Excellent Doctoral Dissertation of PR China (200708).
WOS记录号	WOS:000295189200022
资助机构	National Natural Science Foundation of China [30800296] ; Foundation for the Author of National Excellent Doctoral Dissertation of PR China [200708]
引用统计	被引频次：3[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/311026/12841
专题	脑与认知科学国家重点实验室
通讯作者	Ll, XQ (reprint author), Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China 2.Tianjin Normal Univ, Acad Psychol & Behav, Tianjin, 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	Ll, X-Q.,Lu, Y.,Ll, XQ . HOW ACCENTUATION INFLUENCES SEMANTIC SHORT-TERM MEMORY REPRESENTATIONS DURING ON-LINE SPEECH PROCESSING: AN EVENT-RELATED POTENTIAL STUDY[J]. NEUROSCIENCE,2011,193(1):217-228.
APA	Ll, X-Q.,Lu, Y.,&Ll, XQ .(2011).HOW ACCENTUATION INFLUENCES SEMANTIC SHORT-TERM MEMORY REPRESENTATIONS DURING ON-LINE SPEECH PROCESSING: AN EVENT-RELATED POTENTIAL STUDY.NEUROSCIENCE,193(1),217-228.
MLA	Ll, X-Q.,et al."HOW ACCENTUATION INFLUENCES SEMANTIC SHORT-TERM MEMORY REPRESENTATIONS DURING ON-LINE SPEECH PROCESSING: AN EVENT-RELATED POTENTIAL STUDY".NEUROSCIENCE 193.1(2011):217-228.

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