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Related Experiment Video

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Binocularity and visual search-Revisited.

Bochao Zou1,2, Igor S Utochkin3, Yue Liu4

  • 1Beijing Engineering Research Center of Mixed Reality and Advanced Display and School of Optoelectronics, Beijing Institute of Technology, Beijing, China. zoubochao@gmail.com.

Attention, Perception & Psychophysics
|December 1, 2016
PubMed
Summary
This summary is machine-generated.

Interocular differences, like binocular rivalry and luster, can weakly guide visual attention. New checkerboard stimuli improved rivalry search efficiency, while luster

Keywords:
Binocular lusterBinocular rivalryVisual attentionVisual search

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Area of Science:

  • Visual perception
  • Cognitive psychology
  • Neuroscience

Background:

  • Binocular rivalry involves perceptual alternations between monocular images.
  • Binocular luster, a form of rivalry, arises from luminance differences.
  • Previous research suggested weak attentional guidance by rivalry and strong guidance by luster.

Purpose of the Study:

  • To re-evaluate how dichoptic information guides attention in visual search.
  • To investigate the efficiency of search for binocular rivalry and luster with improved stimuli.
  • To determine if luster stimuli exhibit 'pop-out' effects under controlled conditions.

Main Methods:

  • Utilized novel checkerboard patterns for binocular rivalry experiments.
  • Reduced luminance and contrast artifacts in stimuli to isolate luster effects.
  • Measured Reaction Time (RT) × Set Size functions to assess search efficiency.

Main Results:

  • Search for rivalry using checkerboard patterns was more efficient (16 ms/item) than with gratings (30 ms/item).
  • Luster stimuli did not 'pop out' when artifacts were minimized.
  • Search efficiency significantly improved when luster was incorporated into the search target.
  • Both rivalry and luster demonstrated search asymmetries, indicating attentional guidance.

Conclusions:

  • Interocular differences creating rivalry or luster can guide attention, but weakly.
  • The effectiveness of attentional guidance by these features can be masked by luminance and orientation.
  • Novel stimuli like checkerboards can enhance the efficiency of search for rivalry.