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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
2004
Source PublicationCognitive, Affective, & Behavioral Neuroscience
Correspondent Emailmrugg@uci.edu
Volume4Issue:3Pages:279-293
AbstractThe 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.
Subject Area认知神经科学
Indexed BySCI
Funding ProjectWellcome Trust, by a Royal Society China Research Fellowship, Chinese National Science Foundation Grant 30100055
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/9909
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorMichael D. Rugg
Recommended Citation
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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