Domain-general mechanisms of complex working memory span

被引:131
作者
Chein, Jason M. [1 ]
Moore, Adam B. [2 ]
Conway, Andrew R. A. [2 ]
机构
[1] Temple Univ, Dept Psychol, Philadelphia, PA 19122 USA
[2] Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA
关键词
SHORT-TERM-MEMORY; LATENT-VARIABLE APPROACH; TEST-RETEST RELIABILITY; MEDIAL TEMPORAL-LOBE; INDIVIDUAL-DIFFERENCES; FLUID INTELLIGENCE; PREFRONTAL CORTEX; NEURAL BASIS; ACTIVE MAINTENANCE; CAPACITY;
D O I
10.1016/j.neuroimage.2010.07.067
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
A new fMRI complex working memory span paradigm was used to identify brain regions making domain-general contributions to working memory task performance. For both verbal and spatial versions of the task, complex working memory span performance increased the activity in lateral prefrontal, anterior cingulate, and parietal cortices during the Encoding, Maintenance, and Coordination phase of task performance. Meanwhile, overlapping activity in anterior prefrontal and medial temporal lobe regions was associated with both verbal and spatial recall from working memory. These findings help to adjudicate several contested issues regarding the executive mechanisms of working memory, the separability of short-term and working memory in the verbal and spatial domains, and the relative contribution of short-term and long-term memory mechanisms to working memory capacity. The study also provides a vital bridge between psychometric and neuroimaging approaches to working memory, and constrains our understanding of how working memory may contribute to the broader landscape of cognitive performance. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:550 / 559
页数:10
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