Impact of novelty and type of material on recognition in healthy older adults and persons with mild cognitive impairment
Impact of novelty and type of material on recognition in healthy older adults and persons with mild cognitive impairment
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DOI：
10.1016/j.neuropsychologia.2011.06.011
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发表时间：
2011-08-01
期刊：
影响因子：
2.6
通讯作者：
Lepage, Emilie
中科院分区：
文献类型：
--
作者：
Belleville, Sylvie;Menard, Marie-Claude;Lepage, Emilie
本研究的目的是评估新奇对正常衰老和遗忘型轻度认知障碍（MCI）的正确识别（命中减去假警报）以及回忆和熟悉过程的影响。识别任务比较了语言领域（单词与伪词）和音乐领域（著名与新颖的旋律）中的知名和新颖的刺激。结果表明，新的材料与较低的正确识别和较低的回忆，效果可以与其较低的顺从性精心编码相比，众所周知的项目。结果还表明，正常老化损害的认识，众所周知的项目，而MCI损害识别的新项目。健康的老年人表现出受损的回忆和熟悉相对于年轻的控制和个人MCI表现出受损的回忆相对于健康的老年人。健康老年人和MCI患者的记忆缺陷及其对已知项目的识别受损与这两组人以精细方式编码信息的困难是一致的。反过来，熟悉缺陷可能与受损的额叶功能。因此，材料的新奇对具有年龄相关记忆障碍的人的识别具有不同的影响。(C)2011爱思唯尔有限公司保留所有权利。
The goal of this study was to assess the effect of novelty on correct recognition (hit minus false alarms) and on recollection and familiarity processes in normal aging and amnestic mild cognitive impairment (MCI). Recognition tasks compared well-known and novel stimuli in the verbal domain (words vs. pseudowords) and in the musical domain (well-known vs. novel melodies). Results indicated that novel materials associated with lower correct recognition and lower recollection, an effect that can be related to its lower amenability to elaborative encoding in comparison with well-known items. Results also indicated that normal aging impairs recognition of well-known items, whereas MCI impairs recognition of novel items only. Healthy older adults showed impaired recollection and familiarity relative to younger controls and individuals with MCI showed impaired recollection relative to healthy older adults. The recollection deficit in healthy older adults and persons with MCI and their impaired recognition of well-known items is compatible with the difficulty both groups have in encoding information in an elaborate manner. In turn, familiarity deficit could be related to impaired frontal functioning. Therefore, novelty of material has a differential impact on recognition in persons with age-related memory disorders. (C) 2011 Elsevier Ltd. All rights reserved.