Task by stimulus interactions in brain responses during Chinese character processing

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	Task by stimulus interactions in brain responses during Chinese character processing
	Yang, Jianfeng 2; Wang, Xiaojuan 1; Shu, Hua 1; Zevin, Jason D.3
刊名	NEUROIMAGE
	2012-04-02
卷号	60 期号:2 页码:979-990
关键词	Reading fMRI Task effects Testing for interactions in BOLD data
ISSN号	1053-8119
通讯作者	Shu, H (reprint author), Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100877, Peoples R China.
产权排序	1
英文摘要	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.
学科主题	Cognitive psychology
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.).
原文出处	http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3508434/pdf/nihms358029.pdf
语种	英语
WOS记录号	WOS:000303272300016
内容类型	期刊论文
源URL	[http://ir.psych.ac.cn/handle/311026/13277]
专题	心理研究所_中国科学院行为科学重点实验室
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
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..(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.