Neurocognitive aging and the compensation hypothesis

被引：1140
作者：
Reuter-Lorenz, Patricia A. [1 ]
Cappell, Katherine A. [1 ]
机构：
[1] Univ Michigan, Dept Psychol, Ann Arbor, MI 48109 USA
来源：
CURRENT DIRECTIONS IN PSYCHOLOGICAL SCIENCE | 2008年 / 17卷 / 03期
基金：
美国国家卫生研究院;
关键词：
plasticity; dedifferentiation; brain imaging; working memory;
D O I：
10.1111/j.1467-8721.2008.00570.x
中图分类号：
B84 [心理学];
学科分类号：
04 ; 0402 ;
摘要：
The most unexpected and intriguing result from functional brain imaging studies of cognitive aging is evidence for age-related overactivation: greater activation in older adults than in younger adults, even when performance is age-equivalent. Here we examine the hypothesis that age-related overactivation is compensatory and discuss the compensation-related utilization of neural circuits hypothesis (CRUNCH). We review evidence that favors a compensatory account, discuss questions about strategy differences, and consider the functions that may be served by overactive brain areas. Future research directed at neurocognitively informed training interventions may augment the potential for plasticity that persists into the later years of the human lifespan.
引用
收藏
页码：177 / 182
页数：6
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