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Updated: Mar 30, 2026
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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
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Binocular summation of chance decisions
Oren Yehezkel1, Anna Sterkin1, Dov Sagi2
1Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel Hashomer 52621, Israel.
Scientific Reports
|November 19, 2015
Summary
Binocular vision typically speeds responses, but ambiguous stimuli paradoxically slow reaction time. This occurs because neuronal noise in the visual system, rather than improving clarity, can hinder decision-making with two eyes.
Area of Science:
- Neuroscience
- Visual Perception
- Cognitive Psychology
Background:
- Binocular vision generally enhances sensory processing and speeds reaction times.
- Ambiguous visual stimuli present challenges for accurate and rapid interpretation.
Purpose of the Study:
- To investigate the effect of binocular viewing on reaction time with ambiguous visual stimuli.
- To explore the role of neuronal noise in binocular integration and decision-making.
Main Methods:
- Utilized ambiguous visual stimuli to test binocular viewing conditions.
- Applied the neuronal Accumulator (Race) model to quantify binocular integration.
- Analyzed reaction time distributions to assess decision processes.
Main Results:
- Binocular viewing paradoxically slowed reaction time for ambiguous stimuli.
- Neuronal noise was found to break symmetry between interpretations, increasing decision time.
- The Accumulator (Race) model accurately predicted suboptimal integration and reaction time distributions.
Conclusions:
- Neuronal noise within the visual system is a critical determinant of responses to ambiguous stimuli.
- Binocular integration can be suboptimal, leading to increased decision times under ambiguity.
- The findings challenge the assumption that binocular viewing always accelerates perceptual decision-making.
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