Cerebral correlates of working memory for temporal information

被引：34

作者：

Gruber, O

Kleinschmidt, A

Binkofski, F

Steinmetz, H

von Cramon, DY

机构：

[1] Max Planck Inst Cognit Neurosci, D-04303 Leipzig, Germany

[2] Univ Dusseldorf, Dept Neurol, D-4000 Dusseldorf, Germany

[3] Res Ctr, Inst Med, Julich, Germany

[4] Goethe Univ Frankfurt, Dept Neurol, D-6000 Frankfurt, Germany

来源：

NEUROREPORT | 2000年 / 11卷 / 08期

关键词：

cognition; hemispheric asymmetry; human brain; laterality; phonological loop;

D O I：

10.1097/00001756-200006050-00019

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Studies of neural correlates of working memory functions in the auditory-verbal, visuo-spatial and visuo-object domain suggest a category-specific organization of working memory processes in prefrontal cortex. Here, we used fMRI to explore brain areas that underlie different working memory operations directed to the temporal domain, which so far has been widely neglected. Significant activations related to memory updating and comparison processes were found right-accentuated in prefrontal and lateral premotor cortices. Furthermore, both subvocal rhythm encoding and maintenance enhanced left-lateralized activity in Broca's and supplementary motor area as well as in the sensorimotor cortex. Hemispheric lateralization effects of brain activity during temporal processing tasks may depend on the presence or absence of subvocal rehearsal strategies. NeuroReport 11:1689-1693 (C) 2000 Lippincott Williams & Wilkins.

引用

页码：1689 / 1693

页数：5

共 25 条

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