Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults

	Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults
	Zheng, Zhiwei1,2 ; Li, Juan1,3,4 ; Xiao, Fengqiu 5; Broster, Lucas S.6; Jiang, Yang 6
摘要	Normal aging is associated with greater decline in associative memory relative to item memory due to impaired recollection. Familiarity may also contribute to associative recognition when stimuli are perceived as a 'unitized' representation. Given that familiarity is relatively preserved in older adults, we explored whether age-related associative memory deficits could be attenuated when associations were unitized (i.e., compounds) compared with those non-unitized (i.e., unrelated word pairs). Young and older adults performed an associative recognition task while electroencephalogram (EEG) was recorded. Behavioral results showed that age differences were smaller for recognition of compounds than for unrelated word pairs. ERP results indicated that only compounds evoked an early frontal old/new effect in older adults. Moreover, the early frontal old/new effect was positively correlated with associative discrimination accuracy. These findings suggest that reduced age-related associative deficits under unitized condition may be associated with the presence of familiarity-based retrieval of compounds in older adults. (C) 2015 Elsevier Inc. All rights reserved.
关键词	Unitization Associative recognition Aging Familiarity Event-related potentials
	2015-05-01
语种	英语
发表期刊	NEUROBIOLOGY OF LEARNING AND MEMORY
ISSN	1074-7427
卷号	121 期号:0 页码:59-71
期刊论文类型	Article
收录类别	SSCI
WOS记录号	WOS:000354662800007
引用统计	被引频次：43[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/311026/13397
专题	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, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Psychol, Magnet Resonance Imaging Res Ctr, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Biophys, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China 5.Beijing Normal Univ, Sch Psychol, Inst Dev Psychol, Beijing 100875, Peoples R China 6.Univ Kentucky, Coll Med, Dept Behav Sci, Lexington, KY 40536 USA
第一作者单位	中国科学院心理健康重点实验室
推荐引用方式 GB/T 7714	Zheng, Zhiwei,Li, Juan,Xiao, Fengqiu,et al. Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults[J]. NEUROBIOLOGY OF LEARNING AND MEMORY,2015,121(0):59-71.
APA	Zheng, Zhiwei,Li, Juan,Xiao, Fengqiu,Broster, Lucas S.,&Jiang, Yang.(2015).Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults.NEUROBIOLOGY OF LEARNING AND MEMORY,121(0),59-71.
MLA	Zheng, Zhiwei,et al."Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults".NEUROBIOLOGY OF LEARNING AND MEMORY 121.0(2015):59-71.

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