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Related Experiment Videos

Restricted attentional capacity between sensory modalities.

P Jolicoeur1

  • 1Department of Psychology, University of Waterloo, Ontario, Canada. pjolicoe@cgl.uwaterloo.ca

Psychonomic Bulletin & Review
|August 30, 2002
PubMed
Summary

This study shows a cross-modal attentional blink (AB) effect. Processing an auditory signal impairs performance on a subsequent visual task, demonstrating a shared processing bottleneck.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Auditory Perception

Background:

  • The attentional blink (AB) is a well-documented phenomenon in visual attention, where identifying a second target in a rapid stream is impaired if it appears soon after a first target.
  • Previous research primarily focused on visual-only tasks, leaving the cross-modal nature of the AB effect less understood.

Purpose of the Study:

  • To investigate whether a simple auditory task can elicit an attentional blink (AB) effect in a subsequent visual task.
  • To determine if processing auditory information creates a bottleneck that interferes with visual processing.

Main Methods:

  • Participants performed a rapid serial visual presentation (RSVP) task, identifying targets (X or Y) within a stream of letters.
  • In experimental trials, a simple auditory tone preceded the visual target, requiring a speeded-choice response.
  • Control trials involved an ignorable tone or no tone, with performance on the visual task measured.

Main Results:

  • A significant and prolonged deficit in visual task accuracy was observed when the auditory tone required processing.
  • This deficit was time-locked to the onset of the auditory stimulus.
  • No such deficit occurred when the auditory tone could be ignored or was absent.

Conclusions:

  • The findings demonstrate a robust cross-modal attentional blink (AB) effect, triggered by a simple auditory discrimination task.
  • This suggests that the attentional blink is not limited to visual processing but can arise from interference in a central, amodal system.
  • The results support theories positing a post-perceptual locus for at least a portion of the attentional blink mechanism.

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