Note• If the patient has to make catch-up saccades during low frequency head rotations, this can indicate
either vestibular loss, or cerebellar dysfunction, or both. When test results include catch-up saccades during
low frequency head rotations, it is recommended that the Impulse test results be interpreted with caution.
Data NOT within normal limits could be related to a peripheral and/or central disorder. Use the VOR tests to
assess a patient with catch-up saccades during calibration check.
4. Once the calibration has been checked and you are satisfied with the result, click Accept.
The Collection window opens and the software is ready to begin collecting head impulse data.
Caution• Once calibration has been performed, it is recommended not to reposition the goggles on the patient’s
head.
Otometrics - ICS Impulse USB
51
9 Head Impulse
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