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Cognitive Brain Research 10 (2000) 19 www.elsevier.com/locate/bres
 

Summary: Cognitive Brain Research 10 (2000) 19
www.elsevier.com/locate/bres
Research report
Prefrontal regions play a predominant role in imposing an attentional
`set': evidence from fMRI
*Marie T. Banich , Michael P. Milham, Ruth Ann Atchley, Neal J. Cohen, Andrew Webb,
Tracey Wszalek, Arthur F. Kramer, Zhi-Pei Liang, Vikram Barad, Dan Gullett, Chirag Shah,
Colin Brown
The Beckman Institute, University of Illinois, Urbana-Champaign, 405 N. Mathews, Urbana, IL 61801, USA
Accepted 23 February 2000
Abstract
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. 2000 Elsevier Science B.V. All rights reserved.
Theme: Neural bases of behavior
Topic: Cognition

  

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University
Banich, Marie T. - Department of Psychology, University of Colorado at Boulder

 

Collections: Biology and Medicine