Task by stimulus interactions in brain responses during Chinese character processing

	Task by stimulus interactions in brain responses during Chinese character processing
	Yang, Jianfeng2 ; Wang, Xiaojuan 1; Shu, Hua 1; Zevin, Jason D.3; Shu, H (reprint author), Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100877, Peoples R China.
心理所单位排序	1
摘要	In the visual word recognition literature, it is well understood that various stimulus effects interact with behavioral task. For example, effects of word frequency are exaggerated and effects of spelling-to-sound regularity are reduced in the lexical decision task, relative to reading aloud. Neuroimaging studies of reading often examine effects of task and stimulus properties on brain activity independently, but potential interactions between task demands and stimulus effects have not been extensively explored. To address this issue, we conducted lexical decision and symbol detection tasks using stimuli that varied parametrically in their word-likeness, and tested for task by stimulus class interactions. Interactions were found throughout the reading system, such that stimulus selectivity was observed during the lexical decision task, but not during the symbol detection task. Further, the pattern of stimulus selectivity was directly related to task difficulty, so that the strongest brain activity was observed to the most word-like stimuli that required "no" responses, whereas brain activity to words, which elicit rapid and accurate "yes" responses were relatively weak. This is in line with models that argue for task-dependent specialization of brain regions, and contrasts with the notion of task-independent stimulus selectivity in the reading system. (c) 2012 Elsevier Inc. All rights reserved.
关键词	Reading fMRI Task effects Testing for interactions in BOLD data
学科领域	Cognitive Psychology
	2012-04-02
语种	英语
发表期刊	NEUROIMAGE
ISSN	1053-8119
卷号	60 期号:2 页码:979-990
期刊论文类型	Article
URL	查看原文
收录类别	SCI
项目简介	The authors would like to thank Zhichao Xia's work on the data collection. This research was supported by the Open Research Fund of the State Key Laboratory of Cognitive Neuroscience and Learning CNKOPZD1005 (J.Y.), NIH R21-DC0008969 and R01-HD067364 (J.D.Z.), the Fundamental Research Funds for the Central Universities (H.S.), NSF of China 30870758 (H.S.) and NSF of Beijing 7092051 (H.S.) and a grant from Humanities and Social Sciences project of the Ministry of Education of P.R.C. 10YJCZH194 (X.W.).
WOS记录号	WOS:000303272300016
资助机构	State Key Laboratory of Cognitive Neuroscience and Learning [CNKOPZD1005] ; NIH [R21-DC0008969, R01-HD067364] ; Fundamental Research Funds for the Central Universities ; NSF of China [30870758] ; NSF of Beijing [7092051] ; Ministry of Education [10YJCZH194]
引用统计	被引频次：17[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/311026/13277
专题	中国科学院行为科学重点实验室
通讯作者	Shu, H (reprint author), Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100877, Peoples R China.
作者单位	1.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100877, Peoples R China 2.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China 3.Weill Cornell Med Coll, Sackler Inst Dev Psychobiol, New York, NY 10021 USA
第一作者单位	中国科学院行为科学重点实验室
推荐引用方式 GB/T 7714	Yang, Jianfeng,Wang, Xiaojuan,Shu, Hua,et al. Task by stimulus interactions in brain responses during Chinese character processing[J]. NEUROIMAGE,2012,60(2):979-990.
APA	Yang, Jianfeng,Wang, Xiaojuan,Shu, Hua,Zevin, Jason D.,&Shu, H .(2012).Task by stimulus interactions in brain responses during Chinese character processing.NEUROIMAGE,60(2),979-990.
MLA	Yang, Jianfeng,et al."Task by stimulus interactions in brain responses during Chinese character processing".NEUROIMAGE 60.2(2012):979-990.

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