The effects of age on the neural correlates of successful episodic retrieval: An ERP study

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	The effects of age on the neural correlates of successful episodic retrieval: An ERP study
	Juan Li; Alexa M. Morcom; Michael D. Rugg
通讯作者邮箱	mrugg@uci.edu
摘要	The neural correlates of successful episodic retrieval (recollection), as reflected in event-related potentials (ERPs), were investigated in young (ca. 20 years; n=18) and older (ca. 70 years; n=16) healthy individuals. Subjects classified a series of pictures according to whether each item was new or had been encountered at study in the context of an animacy or a size judgment task. By manipulating the number of times items were presented for study, subsets of test items were formed for which source accuracy did not differ according to age. Relative to ERPs elicited by unstudied pictures, ERPs elicited by items attracting equivalent levels of source accuracy showed marked age-related differences. Those from younger subjects demonstrated the positive-going left parietal and right frontal old/new effects described in several previous studies of source memory. By contrast, analogous ERPs from older subjects contained a large left-lateralized negative effect that overshadowed the positive-going effects evident in the young. No age-related differences in either parietal or frontal ERP old/new effects were detected at electrode sites overlying the right hemisphere. It is possible that the age-related ERP differences observed in this task primarily reflect the use of different kinds of information as a basis for source judgments.
学科领域	认知神经科学
	2004
发表期刊	Cognitive, Affective, & Behavioral Neuroscience
卷号	4 期号:3 页码:279-293
收录类别	SCI
资助项目	Wellcome Trust, by a Royal Society China Research Fellowship, Chinese National Science Foundation Grant 30100055
文献类型	期刊论文
条目标识符	https://ir.psych.ac.cn/handle/311026/9909
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Michael D. Rugg
推荐引用方式 GB/T 7714	Juan Li,Alexa M. Morcom,Michael D. Rugg. The effects of age on the neural correlates of successful episodic retrieval: An ERP study[J]. Cognitive, Affective, & Behavioral Neuroscience,2004,4(3):279-293.
APA	Juan Li,Alexa M. Morcom,&Michael D. Rugg.(2004).The effects of age on the neural correlates of successful episodic retrieval: An ERP study.Cognitive, Affective, & Behavioral Neuroscience,4(3),279-293.
MLA	Juan Li,et al."The effects of age on the neural correlates of successful episodic retrieval: An ERP study".Cognitive, Affective, & Behavioral Neuroscience 4.3(2004):279-293.

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