Decreased parahippocampal activity in associative priming: Evidence from an event-related fMRI study

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	Decreased parahippocampal activity in associative priming: Evidence from an event-related fMRI study
	Yang, Jiongjiong 1; Meckingler, Axel 2; Xu, Mingwei 3; Zhao, Yanbing 1; Weng, Xuchu3 ; J. J. Yang
摘要	In recent years, there has been intense debate on the neural basis of associative priming, particularly on the role of the medial temporal lobe (MTL) in retrieving associative information without awareness. In this study, event-related fMRI was used while healthy subjects performed a perceptual identification task on briefly presented unrelated word pairs and an associative recognition memory task. Contamination of priming by explicit memory was successfully controlled, as associative priming and explicit memory were dissociated on the behavioral level. The fMRI results showed a functional dissociation within the MTL with respect to associative priming effects. The right parahippocampal cortex, but not the hippocampus, showed decreased activation for old vs. new pairs and old vs. recombined pairs (associative priming). The bilateral hippocampus and the right parahippocampal cortex were involved in explicit associative memory. These data provide evidence that subregions of the MTL participate in associative priming even when explicit involvement was controlled. Thus, different regions within the MTL play distinct roles in explicit and implicit associative memory.; In recent years, there has been intense debate on the neural basis of associative priming, particularly on the role of the medial temporal lobe (MTL) in retrieving associative information without awareness. In this study, event-related fMRI was used while healthy subjects performed a perceptual identification task on briefly presented unrelated word pairs and an associative recognition memory task. Contamination of priming by explicit memory was successfully controlled, as associative priming and explicit memory were dissociated on the behavioral level. The fMRI results showed a functional dissociation within the MTL with respect to associative priming effects. The right parahippocampal cortex, but not the hippocampus, showed decreased activation for old vs. new pairs and old vs. recombined pairs (associative priming). The bilateral hippocampus and the right parahippocampal cortex were involved in explicit associative memory. These data provide evidence that subregions of the MTL participate in associative priming even when explicit involvement was controlled. Thus, different regions within the MTL play distinct roles in explicit and implicit associative memory.
学科领域	认知神经科学
	2008-09-01
语种	英语
发表期刊	LEARNING & MEMORY
ISSN	1072-0502
卷号	15 期号:9 页码:703-710
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000259701000013
引用统计	被引频次：19[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/311026/5301
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	J. J. Yang
作者单位	1.Peking Univ, Dept Psychol, Beijing 100871, Peoples R China 2.Univ Saarland, Dept Psychol, Expt Neuropsychol Unit, D-66123 Saarbrucken, Germany 3.Chinese Acad Sci, Inst Psychol, Lab Higher Brain Funct, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jiongjiong,Meckingler, Axel,Xu, Mingwei,et al. Decreased parahippocampal activity in associative priming: Evidence from an event-related fMRI study[J]. LEARNING & MEMORY,2008,15(9):703-710.
APA	Yang, Jiongjiong,Meckingler, Axel,Xu, Mingwei,Zhao, Yanbing,Weng, Xuchu,&J. J. Yang.(2008).Decreased parahippocampal activity in associative priming: Evidence from an event-related fMRI study.LEARNING & MEMORY,15(9),703-710.
MLA	Yang, Jiongjiong,et al."Decreased parahippocampal activity in associative priming: Evidence from an event-related fMRI study".LEARNING & MEMORY 15.9(2008):703-710.

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