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Updated: Jun 29, 2025
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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
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Physiological correlates of a simple saccadic-decision task to extended objects in superior colliculus.
B Caziot1,2,3, B Cooper1, M R Harwood4
1Graduate Center for Vision Research, Department of Biological and Vision Sciences, SUNY College of Optometry, 33 West 42 Street, New York, NY, 10036, USA.
Biorxiv : the Preprint Server for Biology
|April 1, 2024
Summary
Accurate saccadic eye movements are vital for vision. This study reveals how target size influences saccade initiation latency by examining neuronal activity in the superior colliculus (SC).
Area of Science:
- Neuroscience
- Ophthalmology
- Cognitive Science
Background:
- Saccadic eye movements are essential for visuo-motor tasks, with over 180,000 daily occurrences.
- Real-world vision involves extended objects, yet saccades are often studied with point stimuli.
- The size-latency effect demonstrates that saccade initiation depends on target size, possibly balancing cost and information gain.
Conclusions:
- Provides insights into the neural mechanisms causing delays in the saccadic system.
- Highlights the role of superior colliculus (SC) neuronal activity in modulating saccade initiation based on target size.
- Advances understanding of how the brain processes visual information for efficient eye movements.
