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Updated: Aug 28, 2025
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Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
Published on: March 13, 2018
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Comparison of EOG and VOG obtained eye movements during horizontal head impulse testing
Maksim Pleshkov1, Vasilii Zaitsev2, Dmitrii Starkov1
1Department of Otorhinolaryngology and Head and Neck Surgery, Division of Balance Disorders, Maastricht University Medical Center, School for Mental Health and Neuroscience, Maastricht, Netherlands.
Frontiers in Neurology
|September 19, 2022
Summary
Electro-oculography (EOG) shows promise as an alternative to video-oculography (VOG) for vestibular function testing. EOG accurately records eye movements during head impulse testing and reveals less VOR gain asymmetry in healthy individuals.
Area of Science:
- Neuroscience
- Ophthalmology
- Audiology
Background:
- Video head impulse testing (VOG) is standard for vestibular assessment.
- VOG can face challenges with pupil detection (e.g., blinking, eyelids).
- Electro-oculography (EOG) offers an alternative by measuring corneoretinal potential, independent of pupil tracking.
Purpose of the Study:
- To investigate EOG as a viable alternative to VOG for eye movement recording during head impulse testing.
- To compare the accuracy and reliability of EOG and VOG in quantifying vestibular function.
Main Methods:
- Horizontal eye movements were simultaneously recorded using EOG and VOG in 19 healthy subjects.
- Data analysis involved concordance correlation coefficient, t-testing, and Bayes Factor paired t-testing.
- Comparison focused on eye movement traces and vestibulo-ocular reflex (VOR) gains.
Main Results:
- EOG and VOG demonstrated strong correlation in eye movement traces during head impulse testing (average r=0.89).
- No significant difference in average VOR gain between EOG and VOG for leftward head impulses.
- VOG showed significant VOR gain asymmetry (5% rightward), while EOG showed minimal asymmetry (1% rightward).
Conclusions:
- EOG is demonstrated as a feasible method for recording eye movements during head impulse testing.
- EOG correlates well with VOG for horizontal eye movements.
- EOG may offer a more sensitive measure of VOR gain asymmetry compared to VOG in healthy individuals.
