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Related Experiment Video

Updated: Jun 3, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

Ocular Counter-rolling during Active Head Tilting in Humans.

T Viéville¹, D Masse

¹From the Laboratoire de Physiologie NeurosensorieUe du C.N.R.S., Paris, France.

Acta Oto-Laryngologica

|April 1, 2011

Summary

This summary is machine-generated.

Human ocular counter-rolling was measured using a non-invasive infrared video system (EMIRAT). The study found dynamic counter-rolling gain increases with head oscillation frequency, suggesting otolithic reflex involvement.

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Area of Science:

Neuroscience
Ophthalmology
Vestibular System

Background:

Ocular counter-rolling is a vestibulo-ocular reflex crucial for maintaining visual stability during head movements.
Understanding this reflex is important for diagnosing vestibular and neurological disorders.

Purpose of the Study:

To measure human ocular counter-rolling using a novel infrared video-based system.
To quantify the dynamic gain of ocular counter-rolling across different head oscillation frequencies.
To consider the otolithic contribution to this reflex.

Main Methods:

Utilized the Eye Movement Infrared Recording and Tracking (EMIRAT) system for non-invasive, three-dimensional eye angular displacement recording.
Calibrated the system for an overall precision of 0.5 degrees.
Measured dynamic counter-rolling gain during head roll oscillations at varying frequencies (0.1 Hz to 1 Hz).

Main Results:

The EMIRAT system demonstrated high precision and non-invasiveness for measuring ocular counter-rolling.
Dynamic counter-rolling gain was approximately 0.5 at lower frequencies.
Gain increased significantly with oscillation frequency, reaching 0.7 at 1 Hz.

Conclusions:

The study successfully validated the EMIRAT system for precise ocular counter-rolling measurement.
Dynamic counter-rolling gain is frequency-dependent, indicating a significant otolithic contribution to the vestibulo-ocular reflex.
Findings provide a quantitative basis for further research into vestibular function and related disorders.