The functional head impulse test (fHIT) is a test that assesses
the vestibulo-ocular reflex (VOR).
The VOR reflex helps maintain balance by keeping the visual
field stable during head movement. Defect in VOR reflex can
lead to vertigo and dizziness
The fHIT evaluates the functionality of the VOR at high speed head movements
It can be used to understand dizziness and vertigo
It can be used to evaluate the functional performance of the VOR in patients with
motion sickness, visual vertigo