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Updated: May 7, 2026

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum

Efficiently Recording the Eye-Hand Coordination to Incoordination Spectrum

Published on: March 21, 2019

Unconstrained reaching modulates eye-hand coupling.

Dongpyo Lee, Howard Poizner, Daniel M Corcos

Experimental Brain Research

|October 15, 2013

Summary

This summary is machine-generated.

Eye and hand movements interact during goal-directed actions. Reaching movements influence eye movement speed and accuracy, suggesting coupled oculomotor and arm motor systems.

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Last Updated: May 7, 2026

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Published on: April 16, 2014

Area of Science:

Neuroscience
Motor Control
Human Movement Science

Background:

Eye-hand coordination is fundamental for goal-directed movements.
Limited research exists on the mutual influence of unconstrained eye and hand movements towards targets.

Purpose of the Study:

To investigate how eye movements (saccades) and hand movements (reaches) influence each other in 3D space.
To determine the degree of temporal and spatial coupling between saccades and reaches.

Main Methods:

Participants performed eye-only or eye-and-hand movements to static or flashed targets in 3D space.
Eye and hand movement kinematics (velocity, latency, endpoint scatter) were recorded.
Comparison of movements performed alone versus in combination.

Main Results:

Memory-guided saccades showed altered velocity and scatter when combined with reaching.
Peak saccadic velocities were lower, and latencies correlated with reaching, when movements were combined.
Endpoint scatter for saccades was greater when performed with reaching, with weak correlations between saccade and reach scatter.

Conclusions:

Saccades and reaches to 3D targets exhibit weak to moderate temporal and spatial coupling.
Arm movements appear to influence eye movements, indicating interaction beyond shared target representations.
The oculomotor and arm motor systems interact in goal-directed actions.