In order to see if your VOR works fine, here are some tests you can take:
- Head Impulse Testing (HIT)
The head impulse or head thrust test detects VOR deficits in the lateral, superior, and posterior semicircular canals. It is capable of detecting unilateral and bilateral peripheral lesions with high accuracy.
This test activates both canals and provides details about the vestibular system’s overall role during head rotation.
- Sinusoidal harmonic acceleration testing
The chair pushes in a sinusoidal pattern which facilitates the study of eye movements in response to angular accelerations of different magnitudes.
- Constant angular acceleration
The chair’s rotational velocity is raised at a constant rate of 360° until it reaches its full speed.
- Impulse angular acceleration
This test is often used to diagnose nystagmus and is conducted by performing an acceleration test in both directions.
In this test, a high velocity is conducted first before rapidly decreasing it. Afterward, the data gathered, including the time and gain value, is measured.
Caloric irrigation induces changes in endolymph density by generating a temperature gradient around the stimulated ear’s lateral semicircular canal.
The vestibulo-ocular reflex aids the human body in maintaining balance. Hence, if your vision suddenly becomes blurry, jumpy, or if objects look like they are in motion despite staying still, consult your doctor. These may be signs of an impaired VOR reflex.