期刊
NEUROSCIENCE
卷 139, 期 1, 页码 23-38出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2005.06.005
关键词
working memory; human prefrontal cortex; control; fMRI; attention
资金
- NIMH NIH HHS [R01 MH064498, MH064498] Funding Source: Medline
- NATIONAL INSTITUTE OF MENTAL HEALTH [R01MH064498] Funding Source: NIH RePORTER
Cognitive neuroscience research on working memory has been largely motivated by a standard model that arose from the melding of psychological theory with neuroscience data. Among the tenets of this standard model are that working memory functions arise from the operation of specialized systems that act as buffers for the storage and manipulation of information, and that frontal cortex (particularly prefrontal cortex) is a critical neural substrate for these specialized systems. However, the standard model has been a victim of its own success, and can no longer accommodate many of the empirical findings of studies that it has motivated. An alternative is proposed: Working memory functions arise through the coordinated recruitment, via attention, of brain systems that have evolved to accomplish sensory-, representation-, and action-related functions. Evidence from behavioral, neuropsychological, electrophysiological, and neuroimaging studies, from monkeys and humans, is considered, as is the question of how to interpret delay-period activity in the prefrontal cortex. (C) 2005 Published by Elsevier Ltd on behalf of IERO.
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