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Related Experiment Video

Updated: Aug 26, 2025

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems

Published on: April 18, 2019

Video head impulse testing: Pitfalls in neurological patients.

Nehzat Koohi¹, Surangi Mendis², Amy Lennox³

¹Centre for Vestibular and Behavioural Neurosciences, Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, Queen Square, London, UK; The Ear Institute, University College London, London, UK.

Journal of the Neurological Sciences

|October 9, 2022

Summary

The video head impulse test (vHIT) can be affected by neurological saccadic eye movements, not just peripheral conditions. This study highlights oculomotor abnormalities in patients with central neurological disorders during vHIT.

Keywords:

Catch-up saccades Central vestibular disorder Peripheral vesitibulopathy Vertigo vHIT

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Last Updated: Aug 26, 2025

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Published on: April 18, 2019

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Published on: April 27, 2021

Eye-Tracking Control to Assess Cognitive Functions in Patients with Amyotrophic Lateral Sclerosis

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Published on: October 13, 2016

Area of Science:

Neuroscience
Ophthalmology
Vestibular System

Background:

The video head impulse test (vHIT) is crucial for assessing the vestibulo-ocular reflex (VOR).
Peripheral vestibulopathy often presents with reduced VOR gain and corrective saccades on vHIT.
Technical issues and eye movement disorders like nystagmus can complicate vHIT interpretation.

Purpose of the Study:

To investigate the impact of neurological saccadic eye movements on vHIT results.
To describe oculomotor abnormalities observed during vHIT in patients with central neurological disorders.

Main Methods:

Utilized the video head impulse test (vHIT) to assess VOR.
Recorded vHIT data from ten patients with diverse central neurological disorders.
Analyzed oculomotor abnormalities in conjunction with VOR gain values.

Main Results:

Observed oculomotor abnormalities on vHIT in patients with central neurological disorders.
These abnormalities occurred despite normal VOR gain values.
Findings were recorded at a specialized vestibular neurology service.

Conclusions:

Neurological saccadic eye movements can interfere with vHIT interpretation.
vHIT may reveal oculomotor abnormalities in central neurological conditions beyond peripheral vestibulopathy.
Further research is needed to understand these neurological influences on vHIT.