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Related Experiment Video

Updated: Jun 3, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

A global effect of capture saccades.

S Van der Stigchel¹, J P de Vries, R Bethlehem

¹Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, The Netherlands. S.VanderStigchel@uu.nl

Experimental Brain Research

|March 5, 2011

Summary

The global effect, where eye movements land between two stimuli, also occurs when saccades are captured by distracting elements. This "capture global" effect differs from the traditional global effect seen with targets, extending to more remote elements.

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Area of Science:

Neuroscience
Cognitive Science
Ophthalmology

Background:

The global effect describes saccade endpoints being drawn to intermediate locations when targets are near.
Previous research focused on the global effect with visual targets, not distracting elements.

Purpose of the Study:

To investigate if the global effect occurs for eye movements directed at distracting elements (capture saccades).
To compare the characteristics of the "capture global" effect with the traditional global effect observed with targets.

Main Methods:

Adaptation of the oculomotor capture paradigm to include trials with two distractors.
Presentation of two targets in close proximity and further apart to assess the global effect.
Analysis of saccade endpoints to determine the influence of distractor and target proximity.

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Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function

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Published on: July 14, 2016

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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

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Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function

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Main Results:

Erroneous saccades were initiated to intermediate locations when two distractors were closely aligned.
A global effect was observed for distractors even when they were further apart, though less pronounced.
A strong global effect was found with two closely aligned targets, but absent when targets were further apart.

Conclusions:

The global effect is demonstrated for saccades captured by distractors, termed the "capture global" effect.
The "capture global" effect differs from the traditional global effect as it manifests with remote elements.
The study supports population coding theory for explaining the spatial dynamics of the global effect in oculomotor capture.