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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.
2011-10-13
Source PublicationNEUROSCIENCE
ISSN0306-4522
SubtypeArticle
Volume193Issue:1Pages:217-228
Contribution Rank2
AbstractIn 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.
Keywordevent-related potentials accentuation semantic short-term representations speech processing
Subject AreaCognitive Psychology,Cognitive Neuroscience
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Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China [30800296] ; Foundation for the Author of National Excellent Doctoral Dissertation of PR China [200708]
Project Intro.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 IDWOS:000295189200022
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Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/12841
Collection脑与认知科学国家重点实验室
Corresponding AuthorLl, XQ (reprint author), Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China.
Affiliation1.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
Recommended Citation
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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