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Related Experiment Video

Updated: Jun 26, 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

Saccade adaptation specific to visual context.

James P Herman¹, Mark R Harwood, Josh Wallman

¹The City College of New York, Department of Biology, Marshak Science Building, Room J526, 138th Street and Convent Avenue, New York, NY 10031, USA. jherman@gc.cuny.edu

Journal of Neurophysiology

|January 24, 2009

Summary

This summary is machine-generated.

Saccade adaptation, a motor learning process, can be visually cued. Eye movement accuracy is maintained by adjusting saccade amplitudes based on visual target properties.

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Area of Science:

Neuroscience
Ophthalmology
Motor Control

Background:

Saccade adaptation is a motor learning process that adjusts saccade amplitudes to maintain accuracy.
This adaptation typically compensates for physical changes in the oculomotor system due to aging or pathology.
It was previously assumed that saccade adaptation was not dependent on visual stimulus properties.

Purpose of the Study:

To investigate whether saccade adaptation is specific to the visual properties of the target stimulus.
To determine if visual context can serve as a cue for switching saccade gain between different states.

Main Methods:

Subjects performed saccades towards two distinct visual targets: a steady circle and a flickering circle.
One target was programmed to move backward after each saccade, simulating hypermetric saccades.
Saccade gain (saccade amplitude/target amplitude) was measured for both target types.

Main Results:

Saccade gain decreased by 15% for the backward-stepping target compared to 6% for the non-stepping target.
Adaptation primarily occurred on the first saccade of each block.
Differential adaptation required postsaccadic feedback for both target types.

Conclusions:

Saccade adaptation can be modulated by the visual context of the target stimulus.
Visual cues associated with target properties can act as effective triggers for switching saccade gain.
This suggests a previously unrecognized adaptability in saccade motor learning.