Imaging the attentional blink: perceptual versus attentional limitations

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Imaging studies of conscious perception using techniques such as masking often show increased neural responses in object processing regions of the brain, and accompany increased awareness of the stimulus. Imaging studies of the attentional blink, an effect where conscious awareness of the stimulus is suppressed through reduction of attentional resources, has tended to show the opposite neural response. This study examines changes in stimulus parameters such that either attention or perceptual information is limited. Findings show that under conditions of limited attention but reduced perception the BOLD response reveals increased activity when the stimulus cannot be reported; however, under conditions of reduced perception but normal attention, more activity is revealed on trials when the stimulus can be reported.

Original languageEnglish
Pages (from-to)1475-1478
Number of pages4
JournalNeuroreport
Volume18
Issue number14
Publication statusPublished - 17 Sep 2007

Keywords

  • attention
  • attentional blink
  • consciousness
  • functional MRI
  • CONSCIOUS PERCEPTION
  • HUMANS
  • RECOGNITION
  • EVENTS
  • MODEL
  • TASK
  • FMRI

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