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

doi:10.1016/j.neuropsychologia.2016.06.025

	Unitization improves source memory in older adults: An event-related potential study
	Zheng, Zhiwei1 ; Li, Juan1,2 ; Xiao, Fengqiu 3; Ren, Weicong 1; He, Rongqiao 2; J. Li
通讯作者邮箱	lijuan@psych.ac.cn
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.
关键词	Unitization Source memory Familiarity Aging Event-related potentials
	2016-08-01
语种	英语
DOI	10.1016/j.neuropsychologia.2016.06.025
发表期刊	NEUROPSYCHOLOGIA
ISSN	0028-3932
卷号	89 期号:0 页码:232-244
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS关键词	ASSOCIATIVE RECOGNITION MEMORY ; AGE-RELATED DIFFERENCES ; MEDIAL TEMPORAL-LOBE ; IN-SOURCE MEMORY ; ELECTROPHYSIOLOGICAL EVIDENCE ; EPISODIC MEMORY ; RETRIEVAL ; FAMILIARITY ; RECOLLECTION ; ERP
WOS标题词	Science & Technology ; Social Sciences ; Life Sciences & Biomedicine
WOS研究方向	Behavioral Sciences ; Neurosciences & Neurology ; Psychology
WOS类目	Behavioral Sciences ; Neurosciences ; Psychology, Experimental
WOS记录号	WOS:000383003100022
资助机构	National Natural Science Foundation of China(31070916 ; Knowledge Innovation Project of the Chinese Academy of Sciences(KSCX2-EW-J-8) ; CAS/SAFEA International Partnership Program for Creative Research Team(Y2CX131003) ; National Science & Technology Pillar Program of China(2009BAI77B03) ; Scientific Foundation of Institute of Psychology, Chinese Academy of Sciences(Y5CX131005) ; Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences(KLMH2014ZK02 ; 31271108 ; KLMH2014ZG03 ; 31470998) ; KLMH2015ZG06)
引用统计	被引频次：22[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/311026/20389
专题	中国科学院心理健康重点实验室
通讯作者	J. Li
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,&J. Li.(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.

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