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Cortical Dynamics of Acoustic and Phonological Processing in Speech Perception
Zhang, Linjun1,2; Xi, Jie1,3; Xu, Guoqing4; Shu, Hua1; Wang, Xiaoyi5; Li, Ping6,7; Zhang, LJ (reprint author), Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China.
2011-06-13
发表期刊PLOS ONE
ISSN1932-6203
文章类型Article
卷号6期号:6
产权排序3
摘要In speech perception, a functional hierarchy has been proposed by recent functional neuroimaging studies: Core auditory areas on the dorsal plane of superior temporal gyrus (STG) are sensitive to basic acoustic characteristics, whereas downstream regions, specifically the left superior temporal sulcus (STS) and middle temporal gyrus (MTG) ventral to Heschl's gyrus (HG) are responsive to abstract phonological features. What is unclear so far is the relationship between the dorsal and ventral processes, especially with regard to whether low-level acoustic processing is modulated by high-level phonological processing. To address the issue, we assessed sensitivity of core auditory and downstream regions to acoustic and phonological variations by using within-and across-category lexical tonal continua with equal physical intervals. We found that relative to within-category variation, across-category variation elicited stronger activation in the left middle MTG (mMTG), apparently reflecting the abstract phonological representations. At the same time, activation in the core auditory region decreased, resulting from the top-down influences of phonological processing. These results support a hierarchical organization of the ventral acoustic-phonological processing stream, which originates in the right HG/STG and projects to the left mMTG. Furthermore, our study provides direct evidence that low-level acoustic analysis is modulated by high-level phonological representations, revealing the cortical dynamics of acoustic and phonological processing in speech perception. Our findings confirm the existence of reciprocal progression projections in the auditory pathways and the roles of both feed-forward and feedback mechanisms in speech perception.
学科领域Perception Psychology
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收录类别SCI
语种英语
项目资助者Program for Changjiang Scholars and Innovative Research Team in University [IRT0710] ; Natural Science Foundation of China [30870758] ; Natural Science Foundation of Beijing [7092051] ; Fund for Foreign Scholars in University Research and Teaching Programs [B07008]
项目简介The research was supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0710, http://www.cksp.edu.cn/index.php), by grants from the Natural Science Foundation of China (30870758, http://www.nsfc.gov.cn/Portal0/default124.htm), by grants from the Natural Science Foundation of Beijing (7092051, http://www.bjnsf.org/) to HS, and the Fund for Foreign Scholars in University Research and Teaching Programs (B07008, http://www.bjnsf.org/) to PL and HS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
WOS记录号WOS:000291663300033
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被引频次:11[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/311026/11455
专题中国科学院心理健康重点实验室
通讯作者Zhang, LJ (reprint author), Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China.
作者单位1.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China
2.Beijing Language & Culture Univ, Coll Chinese Studies, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China
4.Dalian Med Univ, Dept Psychol, Dalian, Peoples R China
5.Capital Med Univ, Xuanwu Hosp, Dept Radiol, Beijing, Peoples R China
6.Penn State Univ, Dept Psychol, University Pk, PA 16802 USA
7.Penn State Univ, Ctr Language Sci, University Pk, PA 16802 USA
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GB/T 7714
Zhang, Linjun,Xi, Jie,Xu, Guoqing,et al. Cortical Dynamics of Acoustic and Phonological Processing in Speech Perception[J]. PLOS ONE,2011,6(6).
APA Zhang, Linjun.,Xi, Jie.,Xu, Guoqing.,Shu, Hua.,Wang, Xiaoyi.,...&Zhang, LJ .(2011).Cortical Dynamics of Acoustic and Phonological Processing in Speech Perception.PLOS ONE,6(6).
MLA Zhang, Linjun,et al."Cortical Dynamics of Acoustic and Phonological Processing in Speech Perception".PLOS ONE 6.6(2011).
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