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Updated: Jun 15, 2026

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

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Published on: May 23, 2013

A new model for utricular function testing using a sinusoidal translation profile during unilateral centrifugation.

K I Buytaert¹, S A E Nooij, X Neyt

¹Antwerp University Research centre for Equilibrium and Aerospace (AUREA), ENT Department, Antwerp University Hospital, University of Antwerp, Edegem, Antwerp, Belgium. kristof.buytaert@ua.ac.be

Audiology & Neuro-Otology

|March 6, 2010

Summary

This study introduces a new model to separate the utricle

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Area of Science:

Vestibular system physiology
Neuroscience
Biomedical engineering

Background:

The utricle is crucial for gravity-based orientation.
Ocular counter rolling (OCR) reflects combined semicircular canal and utricle input.
Current methods lack a clear distinction between canal and utricular contributions to OCR.

Purpose of the Study:

To develop and validate a novel physiological model for decomposing ocular counter rolling (OCR).
To differentiate between semicircular canal and utricle contributions to the vestibulo-ocular reflex.
To quantify specific parameters of both canal and utricular function.

Main Methods:

Utilized a unilateral centrifugation test involving combined rotation and translation.
Measured ocular counter rolling (OCR) using 3-D video-oculography.
Developed a new physiological model to separate canal (second-order transfer function) and utricular (sine functions) components of OCR.

Main Results:

The model successfully decomposed total OCR into canal and utricular contributions.
Identified key parameters for canal function (gain, time constants, velocity storage).
Quantified utricular parameters including gain, bias, phase, and inter-utricle asymmetry.

Conclusions:

The new model effectively distinguishes utricular from semicircular canal influences on OCR.
Provides valuable insights into utricular function and vestibular asymmetry.
Demonstrated model effectiveness in healthy subjects and patients with unilateral vestibular loss.