Ageing affects brain activity in highly educated older adults: An ERP study using a word-stem priming task

被引：32
作者：
Osorio, Alexandra [1 ,2 ]
Fay, Severine [3 ]
Pouthas, Viviane [2 ]
Ballesteros, Soledad [1 ]
机构：
[1] Univ Nacl Educ Distancia, Dept Basic Psychol 2, E-28040 Madrid, Spain
[2] Hop La Pitie Salpetriere, UPMC, CNRS, LENA UPR 640, Paris, France
[3] Univ Tours, CNRS, CeRCA, UMR 6234, Tours, France
来源：
CORTEX | 2010年 / 46卷 / 04期
关键词：
Ageing; Awareness; Event-related potential (ERP); Repetition priming; Word-stem priming; LONGITUDINAL AGE GRADIENTS; ALZHEIMERS-DISEASE; EXPLICIT MEMORY; LIFE-SPAN; IMPLICIT MEMORY; REPETITION; COMPLETION; AWARENESS; COGNITION; SYSTEMS;
D O I：
10.1016/j.cortex.2009.09.003
中图分类号：
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号：
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要：
in this event-related evoked potentials (ERP) study, the neural correlates of a group of highly educated older adults were compared with those of a group of young adults while performing a word-stem completion priming task under semantic and lexical encoding conditions. The results revealed that both age groups exhibited robust priming. The older participants showed better performance than the young adults. Both groups exhibited ERP repetition effects at posterior sites, but only the older adults showed additional frontal activity. The results suggest that highly performing older adults compensate for their lower level of parieto-occipital functioning, reflected by smaller P300 amplitude at posterior sites, by recruiting frontal sites as a mode of brain adaptation. (C) 2009 Elsevier Srl. All rights reserved.
引用
收藏
页码：522 / 534
页数：13
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