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Magnetic eye tracking in mice.

Hannah L Payne1, Jennifer L Raymond1

  • 1Department of Neurobiology, Stanford University, Stanford, United States.

Elife
|September 6, 2017
PubMed
Summary
This summary is machine-generated.

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We developed a novel magnetic eye tracking method for neuroscience research. This technique allows high-resolution measurement of eye movements in freely moving mice, offering new insights into brain function.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Biomedical Engineering

Background:

  • Eye movements are crucial for understanding sensorimotor integration and cognition.
  • Accurate measurement of eye movements is vital in neuroscience research.
  • Existing methods like eye coils and video-oculography have limitations, especially for freely moving subjects.

Purpose of the Study:

  • To introduce a new magnetic sensing-based method for measuring eye movements.
  • To enable high-resolution eye tracking in both head-fixed and freely moving mice.
  • To compare eye movement characteristics between head-fixed and freely moving conditions.

Main Methods:

  • A small magnet was surgically implanted onto the mouse eye.
  • A magnetic field sensor detected changes in magnet angle corresponding to eye rotation.
Keywords:
binocular visioneye movementsmouseneuroscienceoculomotor mechanicsspatial visionvestibulo-ocular reflex

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Related Experiment Videos

Last Updated: Jun 25, 2026

Video-oculography in Mice
09:43

Video-oculography in Mice

Published on: July 19, 2012

Transpupillary Two-Photon In Vivo Imaging of the Mouse Retina
09:03

Transpupillary Two-Photon In Vivo Imaging of the Mouse Retina

Published on: February 13, 2021

Quantification of Visual Feature Selectivity of the Optokinetic Reflex in Mice
09:28

Quantification of Visual Feature Selectivity of the Optokinetic Reflex in Mice

Published on: June 23, 2023

  • Systematic testing validated the method's high resolution (<0.1°).

    • Main Results:

    • The magnetic eye tracking method achieved high-resolution measurements of eye position.
    • This is the first method enabling reliable, high-resolution eye movement tracking in freely moving mice.
    • Freely moving mice exhibited increased eye movements and altered binocular coordination compared to head-fixed mice.

    Conclusions:

    • Magnetic eye tracking is a lightweight, inexpensive, and easily implemented technique.
    • It offers a high-resolution alternative for measuring eye movements in neuroscience.
    • This method opens new avenues for studying naturalistic behaviors and brain function in mobile subjects.