Prefrontal regions play a predominant role in imposing an attentional 'set': evidence from fMIRI

被引：270

作者：

Banich, MT ^{[1
]}

Milham, MP ^{[1
]}

Atchley, RA ^{[1
]}

Cohen, NJ ^{[1
]}

Webb, A ^{[1
]}

Wszalek, T ^{[1
]}

Kramer, AF ^{[1
]}

Liang, ZP ^{[1
]}

Barad, V ^{[1
]}

Gullett, D ^{[1
]}

Shah, C ^{[1
]}

Brown, C ^{[1
]}

机构：

[1] Univ Illinois, Beckman Inst, Urbana, IL 61801 USA

来源：

COGNITIVE BRAIN RESEARCH | 2000年 / 10卷 / 1-2期

关键词：

attention; fMRI; dorsolateral prefrontal cortex; anterior cingulate; stroop task;

D O I：

10.1016/S0926-6410(00)00015-X

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

fMRI was used to determine whether prefrontal regions play a predominant role in imposing an attentional 'set' that drives selection of task-relevant information. While monitoring for an atypical item, individuals viewed Stroop stimuli that were either colored words or colored objects. Attentional demands were varied, being greater when the stimuli contained two distinct and incongruent sources of information about the task-relevant attribute (e.g., when attending to color, seeing the word 'blue' in red ink) as compared to only one source (e.g., seeing the word 'late' in red ink). Prefrontal but not anterior cingulate regions exhibited greater activation on incongruent than neutral trials, suggesting that prefrontal cortex has a major role in imposing an attentional 'set'. In addition, we found that prefrontal activation is most likely to occur when that attentional set is difficult to impose. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 9

页数：9

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