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Updated: Feb 10, 2026
08:38
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
32.8K
[Horizontal semicircular canalvideo head impulse test in normaladults:normal value and age distribution]
1Department of Otolaryngology-Head and Neck Surgery,Xijing Hospital,Xi'an,710032,China.
Summary
The video head impulse test (vHIT) reveals that horizontal angular vestibulo-ocular reflex (VOR) gain slightly decreases with age in adults. These findings are crucial for accurate clinical assessments of VOR function.
Area of Science:
- Neurology
- Ophthalmology
- Vestibular Science
Background:
- The vestibulo-ocular reflex (VOR) stabilizes gaze during head movements.
- The video head impulse test (vHIT) is a key tool for assessing VOR function.
- Understanding normative vHIT parameters is essential for diagnosing vestibular disorders.
Purpose of the Study:
- To investigate video head impulse test (vHIT) parameters for the horizontal semicircular canal.
- To evaluate the application of vHIT in assessing angular vestibulo-ocular reflex (VOR) in adults.
Main Methods:
- vHIT was performed on 80 healthy adults.
- Parameters analyzed included instantaneous and regression gain, asymmetry, and corrective saccades (latency, peak velocity, occurrence rate).
Main Results:
- Mean horizontal VOR velocity gain at 60 ms was 0.944±0.133, with a lower limit of normal at 0.73.
- Regression gain was 0.944±0.090, with a lower limit of normal at 0.80.
- Age-related decline in VOR gain was observed, though not statistically significant.
Conclusions:
- Horizontal VOR gain, both instantaneous and regression, shows a slight decrease with advancing age.
- These age-related changes should be considered during clinical interpretation of vHIT results.
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