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

Research output: Contribution to journalArticlepeer-review

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. (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalCognitive Brain Research
Volume10
Issue number1-2
DOIs
StatePublished - Sep 2000

Keywords

  • Anterior cingulate
  • Attention
  • Dorsolateral prefrontal cortex
  • fMRI
  • Stroop task

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology

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