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Related Experiment Video

Updated: May 30, 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

Eye position effects in saccadic adaptation.

Katharina Havermann¹, Eckart Zimmermann, Markus Lappe

¹Inst. for Psychology, University of Muenster, Muenster, Germany. k.havermann@uni-muenster.de

Journal of Neurophysiology

|July 29, 2011

Summary

This summary is machine-generated.

Saccadic adaptation, which keeps eye movements accurate, is specific to eye position. This finding is crucial for understanding how the brain controls combined head and eye movements during visual exploration.

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Last Updated: May 30, 2026

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Area of Science:

Neuroscience
Ophthalmology
Visual System Research

Background:

Saccades are rapid eye movements essential for visual exploration, utilizing foveal vision for accuracy.
Saccadic adaptation modifies eye movement control based on visual error to maintain accuracy.
Existing knowledge indicates saccadic adaptation is specific to saccade amplitude and direction.

Purpose of the Study:

To investigate whether saccadic adaptation is also specific to the initial position of the eye in the orbit.
To determine how eye position influences the transfer of saccadic adaptation.
To explore the underlying mechanisms, such as gain fields, responsible for eye position-dependent adaptation.

Main Methods:

Employed the intrasaccadic target step paradigm to adapt reactive saccade amplitudes.
Adaptation was induced at specific initial eye positions within the orbit.
Tested the transfer of adapted saccade amplitudes to different starting eye positions.

Main Results:

Saccadic adaptation showed specificity to the initial eye position.
Adaptation at central eye positions transferred fully to eccentric positions.
Adaptation at eccentric positions showed reduced transfer to central or contralateral eccentric positions.

Conclusions:

Eye position significantly modifies the transfer of saccadic amplitude adaptation.
The findings suggest that eye position information is integrated into saccadic control mechanisms.
A gain field mechanism is proposed as a potential explanation for the observed eye position dependence in saccadic adaptation.