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Part 2 | Interacoustics CPD 2019
The effect of age on head impulse testing using video-oculography
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1. The horizontal head impulse test (HIT) is a well-recognized clinical tool to test the: *
2. If a subject’s vestibular ocular reflex (VOR) is normal, the eyes should remain focused on the fixation target during head rotation. *
3. Video-oculography (VOG) goggles allow _________ recording of the eye and head movements during the HIT: *
4. Covert saccades can be defined as: *
5. Overt saccades can be defined as: *
6. A velocity gain is calculated by dividing instantaneous eye velocity by instantaneous head velocity: *
7. The exclusion criteria ascertained at the time of recruitment of participants for the study were no previous form of brain disorder, vertigo or restricted neck movement: *
8. During the experimental procedure: *
9. How was the system calibrated for the study? *
10. How long was the subject instructed to fixate on each dot? *
11. One of the testing methods outlined to the subjects included that they should: *
12. Rotation of the subject’s head was performed with the examiner standing where in relation to the seated subject? *
13. During the experimental procedure _________ unpredictable head rotations in both directions were performed from a central head position: *
14. Head rotations were achieved by the examiner firmly holding the mandible with three fingers clasped below & a thumb & forefinger above the jaw line: *
15. HVOR velocity gain at ____ and____ for both left and right rotations were used to assess the normative range for the study: *
16. Recently, it was found that VOR gain in subjects older than 70 years or 80 years: *
17. The highest HVOR velocity gain of 1.18 was physiologically related: *
18. In the current study, goggle slippage could have been caused by: *
19. Analysis was carried out at a fixation target distance of: *
20. The acutely vertiginous subject with a normal HVOR velocity gain needs consideration of a: *
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