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How to Create and Use Binocular Rivalry
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Attention periodically samples competing stimuli during binocular rivalry.

Matthew J Davidson1,2, David Alais3, Jeroen Ja van Boxtel1,2,4

  • 1School of Psychological Sciences, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Melbourne, Australia.

Elife
|December 4, 2018
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Summary

Attention rhythmically samples sensory information, influencing conscious perception. This study shows attention can shift away from conscious awareness, altering perception rhythms, especially during binocular rivalry.

Keywords:
EEGbinocular rivalrycrossmodal stimulationhumanneuroscienceperiodic samplingvisual attention

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception

Background:

  • The attentional sampling hypothesis posits rhythmic sensory processing linked to attention.
  • Binocular rivalry presents competing stimuli, allowing investigation of conscious perception and attention.

Purpose of the Study:

  • To investigate if attention samples suppressed sensory representations during binocular rivalry.
  • To determine the effect of attention allocation on the timing of conscious perception changes.

Main Methods:

  • Utilized binocular rivalry with crossmodal attention cues.
  • Recorded electroencephalogram (EEG) to measure neural activity and inter-trial phase-coherence.
  • Analyzed changes in consciousness at specific attentional sampling frequencies.

Main Results:

  • Conscious perception changes occurred at ~8 Hz when attention was directed to the conscious percept.
  • Attention directed to the suppressed image slowed conscious perception changes to ~3.5 Hz.
  • EEG showed correlations between inter-trial phase-coherence at sampling frequencies and perceptual changes, dependent on task relevance.

Conclusions:

  • Attention rhythmically samples sensory information, influencing conscious perception.
  • Attention can flexibly sample suppressed representations, deviating from conscious awareness in a task-dependent manner.
  • Neural oscillations at attentional sampling frequencies reflect the dynamic interplay between attention and conscious perception.