Going beyond the information given: a neural system supporting semantic interpretation

被引：62

作者：

Scott, SK

Leff, AP

Wise, RJS

机构：

[1] UCL, Dept Psychol, London WC1E 6BT, England

[2] Hammersmith Hosp, MRC, Ctr Clin Sci, Cyclotron Unit, London W12 0NN, England

来源：

NEUROIMAGE | 2003年 / 19卷 / 03期

基金：

英国医学研究理事会;

关键词：

D O I：

10.1016/S1053-8119(03)00083-1

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Relating the meaning of a word to the context in which it is encountered is central to comprehension. We investigated the neural basis of this process. Subjects made decisions based on a semantic property of single nouns. The lack of sentence context created ambiguity, as nouns may have several, unrelated semantic identities. Contrasted with unambiguous decisions about each noun's sound structure, the semantic task resulted in activity in the left superior frontal gyrus (SFG), activity that was dependent on choice reaction time. This identified the left SFG as an executive component of a distributed cognitive system that relates a word's meaning to its semantic context to facilitate comprehension. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：870 / 876

页数：7

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