Related Experiment Video
Updated: Jul 19, 2025
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
[THE VIDEO HEAD IMPULSE TEST (VHIT)]
Nabil Faranesh1,2, Avi Shupak3,4
1Unit of Otoneurology, Lin Medical Center, Haifa, Department of ENT Head.
Introduction:
The video head impulse test (vHIT) is a new tool in the vestibular tests' arsenal. It is based on the clinical Head Impulse Test, where the integrity of the vestibulo-ocular reflex is tested by high frequency excitation of the semi-circular canals. The vHIT system is composed of an accelerometer measuring the head movements, and a high frequency infra-red camera for eye tracking mounted on a light-weighted goggles. The main measures obtained are the vestibulo-ocular reflex gain - the ratio between the head and eye velocities, and the recording of corrective saccades taking place during the head movement (covered saccades) or following it (overt saccades).
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