PET evidence for an amodal verbal working memory system

被引：215

作者：

Schumacher, EH ^{[1
]}

Lauber, E ^{[1
]}

Awh, E ^{[1
]}

Jonides, J ^{[1
]}

Smith, EE ^{[1
]}

Koeppe, RA ^{[1
]}

机构：

[1] UNIV MICHIGAN, DIV NUCL MED, ANN ARBOR, MI 48109 USA

来源：

NEUROIMAGE | 1996年 / 3卷 / 02期

关键词：

D O I：

10.1006/nimg.1996.0009

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Current models of verbal working memory assume that modality-specific representations are translated into phonological representations before entering the working memory system, We report an experiment that tests this assumption, Positron emission tomography measures were taken while subjects performed a verbal working memory task, Stimuli were presented either visually or aurally, and a visual or auditory search task, respectively, was used as a control. Results revealed an almost complete overlap between the active memory areas regardless of input modality. These areas included dorsolateral frontal, Broca's area, SMA, and premotor cortex in the left hemisphere; bilateral superior and posterior parietal cortices and anterior cingulate; and right cerebellum. These results correspond well with previous research and suggest that verbal working memory is modality independent and is mediated by a circuit involving frontal, parietal, and cerebellar mechanisms. (C) 1996 Academic Press, Inc.

引用

页码：79 / 88

页数：10

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