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Interactions between global motion and local binocular rivalry

D Alais1, R Blake

  • 1Vanderbilt Vision Research Center, Vanderbilt University, Nashville, TN 37240, USA. alaisd@ctrvax.vanderbilt.edu

Vision Research
|May 30, 1998
PubMed
Summary
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Binocular rivalry, a visual phenomenon, occurs at intermediate motion processing levels. Higher-level motion areas can influence this process through feedback, suggesting a looping hierarchy in visual perception.

Area of Science:

  • Neuroscience
  • Visual Perception
  • Computational Neuroscience

Background:

  • Binocular rivalry is traditionally attributed to low-level cortical processing.
  • Understanding the precise neural locus of binocular rivalry is crucial for visual neuroscience.

Purpose of the Study:

  • To investigate whether binocular rivalry occurs at the level of local or global motion processing.
  • To determine if feedback from higher-level motion areas influences binocular rivalry.

Main Methods:

  • Experiment 1: Used a multiple-aperture motion stimulus to assess rivalry's effect on global coherence when a component grating was suppressed.
  • Experiment 2: Examined how global motion context affects the predominance of a local target during binocular rivalry.

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Main Results:

  • Rivalry suppression of a component grating prevented global coherence, suggesting rivalry impacts local motion processing.
  • Target predominance increased when it was part of a globally coherent stimulus, indicating top-down feedback from higher motion areas.

Conclusions:

  • Binocular rivalry suppression occurs at an intermediate level of motion processing.
  • Higher-level motion mechanisms exert feedback influence on binocular rivalry, supporting a hierarchical and interactive model of visual processing.