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	The role of top-down task context in learning to perceive objects
	Song, Yiying1,2; Hu, Siyuan1,2; Li, Xueting1; Li, Wu1; Liu, Jia1,2
刊名	Journal of neuroscience
	2010-07-21
卷号	30期号:29页码:9869-9876
ISSN号	0270-6474
DOI	10.1523/jneurosci.0140-10.2010
通讯作者	Liu, jia(liujia@bnu.edu.cn)
英文摘要	In high-level perceptual regions of the ventral visual pathway in humans, experience shapes the functional properties of the cortex: the fusiform face area responds most strongly to faces of familiar rather than unfamiliar races, and the visual word form area (vwfa) is tuned only to familiar orthographies. but are these regions affected only by the bottom-up stimulus information they receive during learning, or does the effect of perceptual experience depend on the way that stimulus information is used during learning? here, we test the hypothesis that top-down influences (i.e., task context) modulate the effect of perceptual experience on functional selectivities of the high-level visual cortex. specifically, we test whether experience with novel visual stimuli produces a greater effect on the vwfa when those stimuli are associated with meanings (via association learning) but produces a greater effect on shape-processing regions when trained in a discrimination task without associated meanings. our result supports this hypothesis and further shows that learning is transferred to novel objects that share parts with the trained objects. thus, the effects of experience on selectivities of the high-level visual cortex depend on the task context in which that experience occurs and the perceptual processing strategy by which objects are encoded during learning.
WOS关键词	WORD FORM AREA ; LATERAL OCCIPITAL COMPLEX ; HUMAN EXTRASTRIATE CORTEX ; SURFACE-BASED ANALYSIS ; INFEROTEMPORAL CORTEX ; PERIRHINAL NEURONS ; NEURAL PLASTICITY ; VISUAL-CORTEX ; ADULT MONKEYS ; TERM-MEMORY
WOS研究方向	Neurosciences & Neurology
WOS类目	Neurosciences
语种	英语
出版者	SOC NEUROSCIENCE
WOS记录号	WOS:000280206500023
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2412146
专题	中国科学院大学
通讯作者	Liu, Jia
作者单位	1.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Yiying,Hu, Siyuan,Li, Xueting,et al. The role of top-down task context in learning to perceive objects[J]. Journal of neuroscience,2010,30(29):9869-9876.
APA	Song, Yiying,Hu, Siyuan,Li, Xueting,Li, Wu,&Liu, Jia.(2010).The role of top-down task context in learning to perceive objects.Journal of neuroscience,30(29),9869-9876.
MLA	Song, Yiying,et al."The role of top-down task context in learning to perceive objects".Journal of neuroscience 30.29(2010):9869-9876.

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