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How to Create and Use Binocular Rivalry
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A simple model of binocular luster.

Gunnar Wendt1,2, Franz Faul1,3

  • 1Institut für Psychologie, Universität Kiel, Kiel, Germany.

Journal of Vision
|September 8, 2022
PubMed
Summary

Binocular luster, a visual effect, arises from neural conflicts between ON and OFF pathways. An improved model incorporating ON-ON and OFF-OFF pairings now better predicts luster sensations, enhancing our understanding of binocular vision.

Area of Science:

  • Visual Neuroscience
  • Perceptual Psychology
  • Computational Vision

Background:

  • Binocular luster is a visual phenomenon triggered by dichoptic presentation of stimuli with differing contrast.
  • Existing models suggest luster arises from neural conflict between ON and OFF visual pathways.
  • Previous models failed to explain luster evoked by same-sign contrast polarities.

Purpose of the Study:

  • To develop an improved computational model of binocular luster.
  • To incorporate ON-ON and OFF-OFF pathway interactions into the model.
  • To test the predictive accuracy of the enhanced model across diverse stimuli.

Main Methods:

  • Development of a modified interocular conflict model.
  • Testing the model's predictions against empirical luster judgments.

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  • Utilizing approximately 500 distinct center-ring-surround stimuli in four experiments.

    • Main Results:

    • The improved model accounts for over 80% of the variance in empirical luster judgments.
    • The model successfully resolved previous discrepancies regarding same-sign contrast stimuli.
    • Evidence suggests a nonlinear transducer function for binocular conflict signals.

    Conclusions:

    • The enhanced interocular conflict model provides a more comprehensive explanation for binocular luster.
    • The findings support the role of both ON-ON/OFF-OFF and ON-OFF pathway interactions.
    • The study highlights the complexity of neural processing underlying binocular visual perception.