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Related Experiment Video

Updated: Feb 25, 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

Multiple spatial representations interact to increase reach accuracy when coordinating a saccade with a reach.

Yuriria Vazquez¹, Laura Federici², Bijan Pesaran³

¹Center for Neural Science, New York University, New York, New York; and.

Journal of Neurophysiology

|August 4, 2017

Summary

Coordinated eye and arm movements improve reaching accuracy, even without direct target focus. This enhanced accuracy is due to a spatial coupling mechanism between the saccade and reach systems.

Keywords:

accuracy eye-hand coordination reach saccade visual-motor

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Last Updated: Feb 25, 2026

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

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Published on: March 18, 2019

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Published on: March 21, 2019

Assessing Corticospinal Excitability During Goal-Directed Reaching Behavior

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Published on: December 2, 2022

Area of Science:

Neuroscience
Primate behavior
Motor control

Background:

Precise reaching in primates relies on target localization and foveation.
The contribution of the saccade system to reach accuracy is not well understood.

Purpose of the Study:

To investigate the spatial contributions of eye movements to reach accuracy.
To understand the role of coordinated saccade and reach movements in enhancing performance.

Main Methods:

Behavioral psychophysics experiments were conducted on nonhuman primates (Macaca mulatta).
The study analyzed reach accuracy under conditions with and without target foveation during coordinated movements.

Main Results:

Coordinated saccades with reaches to remembered targets improved accuracy, even without foveation.
Spatial coupling between saccade and reach movements was identified as a key mechanism.
Correlations between saccade and reach errors were significant for coordinated movements.

Conclusions:

Coordinated movements enhance reach accuracy through spatial coupling between the saccade and reach systems.
This spatial coupling mechanism may involve interacting neural representations for coordinated visual behavior.