Increased functional magnetic resonance imaging activity during nonconscious perception in the attentional blink

Kimron L. Shapiro*, Stephen J. Johnston, Werner Vogels, Arshad Zaman, Neil Roberts

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Presenting two targets for identification within a few hundred milliseconds reliably yields reduced performance on the second relative to the first. This attentional blink phenomenon has been extensively studied behaviourally but, until recently, has eluded direct investigation by functional magnetic resonance imaging. The few published imaging studies agree that the attentional blink recruits a fronto-temporo-parietal 'attentional' network. What remains controversial is the specific role played by the 'object processing' ventro-occipital regions of the brain. Two studies used different tasks and stimulus onset asynchronies leaving the cause for this divergence unknown. The present study resolves this discrepancy by examining the different methodologies. Our results suggest that task difficulty and masking must be factored in to any conclusions drawn about the brain activity during the attentional blink paradigm.

Original languageEnglish
Pages (from-to)341-345
Number of pages5
JournalNeuroreport
Volume18
Issue number4
Publication statusPublished - 5 Mar 2007

Keywords

  • attention
  • attentional blink
  • functional magnetic resonance imaging
  • neuroimaging
  • CONSCIOUS PERCEPTION
  • CORTEX
  • SUPPRESSION
  • PARIETAL
  • TASK
  • FMRI

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