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Electrophysiological evidence for the effects of unitization on associative recognition memory in older adults
Zheng, Zhiwei1,2; Li, Juan1,3,4; Xiao, Fengqiu5; Broster, Lucas S.6; Jiang, Yang6
2015-05-01
发表期刊NEUROBIOLOGY OF LEARNING AND MEMORY
ISSN1074-7427
文章类型Article
卷号121期号:0页码:59-71
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
收录类别SSCI
语种英语
WOS记录号WOS:000354662800007
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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
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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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