Unitization improves source memory in older adults: An event-related potential study

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	Unitization improves source memory in older adults: An event-related potential study
	Zheng, Zhiwei1 ; Li, Juan 1,2; Xiao, Fengqiu 3; Ren, Weicong 1; He, Rongqiao 2
刊名	NEUROPSYCHOLOGIA
	2016-08-01
通讯作者邮箱	lijuan@psych.ac.cn
卷号	89 期号:0 页码:232-244
关键词	Unitization Source memory Familiarity Aging Event-related potentials
ISSN号	0028-3932
通讯作者	J. Li
英文摘要	Aging-related decline in episodic memory, particularly in associative memory, is attributed to an impaired recollection of the specific details of a study episode. Fortunately, familiarity is relatively preserved in older adults. Previous studies have indicated that unitization is a specialized form of learning that increases the contribution of familiarity to associative retrieval. Here we examined whether older adults' associative memory could be improved when employing an encoding strategy that encouraged unitization. Young and older adults encoded items and background colors either in a unitized condition (i.e., by imagining the color as an internal feature of the item) or in a non-unitized condition (i.e., by imagining the color as a contextual feature of the item). The participants then performed a source recognition test. The effects of unitization on the neural correlates of familiarity were measured by event related potentials (ERPs). The age differences in source memory performance were lower in the unitized condition than in the non-unitized condition. The older adults only demonstrated neural correlates of familiarity-based source recognition in the unitized condition. These findings suggest that a unitized encoding strategy could improve source memory performance in older adults by enhancing the involvement of familiarity in source recognition. (C) 2016 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Social Sciences ; Life Sciences & Biomedicine
类目[WOS]	Behavioral Sciences ; Neurosciences ; Psychology, Experimental
研究领域[WOS]	Behavioral Sciences ; Neurosciences & Neurology ; Psychology
关键词[WOS]	ASSOCIATIVE RECOGNITION MEMORY ; AGE-RELATED DIFFERENCES ; MEDIAL TEMPORAL-LOBE ; IN-SOURCE MEMORY ; ELECTROPHYSIOLOGICAL EVIDENCE ; EPISODIC MEMORY ; RETRIEVAL ; FAMILIARITY ; RECOLLECTION ; ERP
收录类别	SCI ; SSCI
语种	英语
WOS记录号	WOS:000383003100022
内容类型	期刊论文
源URL	[http://ir.psych.ac.cn/handle/311026/20389]
专题	心理研究所_中国科学院心理健康重点实验室
作者单位	1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Ctr Aging Psychol, 16 Lincui Rd, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Biophys, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China 3.China Natl Childrens Ctr, Beijing 100035, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Zhiwei,Li, Juan,Xiao, Fengqiu,et al. Unitization improves source memory in older adults: An event-related potential study[J]. NEUROPSYCHOLOGIA,2016,89(0):232-244.
APA	Zheng, Zhiwei,Li, Juan,Xiao, Fengqiu,Ren, Weicong,&He, Rongqiao.(2016).Unitization improves source memory in older adults: An event-related potential study.NEUROPSYCHOLOGIA,89(0),232-244.
MLA	Zheng, Zhiwei,et al."Unitization improves source memory in older adults: An event-related potential study".NEUROPSYCHOLOGIA 89.0(2016):232-244.