AUTHOR=Cengiz Deniz Uğur , Erbek Hatice Seyra , Çolak Sanem Can , Kurtcu Büşra , Demirel Birişik Sümeyye , Karababa Ercan , Kuşman Buşra , Özdemir Emre Akgün , Işık Mehmet , Demir İsmail 

TITLE=Evaluation of vestibulo-ocular reflex with functional head impulse test in healthy individuals: normative values

JOURNAL=Frontiers in Neurology

VOLUME=Volume 14 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2023.1300651

DOI=10.3389/fneur.2023.1300651

ISSN=1664-2295

ABSTRACT=Objectives: This study aimed to determine the normative values of the functional head impulse test (fHIT) test in healthy young adults.The study included 100 individuals, 58 females and 42 males, aged 20-25 years. Beon Solution Zero Branco (TV) fHIT test was applied to all participants. FHIT results were analyzed in terms of lateral-posterior-anterior semicircular canals (SSCs), gender, and right-left ear.Results: In the fHIT test, for the lateral SSC the mean percent correct answer (%CA) values for 4000-6000°/s 2 and 1000-7000°/s 2 were 88.52 ± 9.04 and 89.91 ± 6.95, respectively; for the posterior SSC, the mean %CA values for SSC 3000-6000°/s 2 and 1000-7000°/s 2 were 90.63 ± 8.69 and 91.16 ± 7.42, respectively; for the anterior SSC, the mean %CA values for 3000-6000°/s 2 and 1000-7000°/s 2 were 91.21 ± 7.96 and 91.49 ± 7.13, respectively. There was no statistically significant difference between the right and left ear in %CA values at all accelerations in all SSCs (p>0.05). There was a statistically significant difference between genders in the mean %CA values for 6000-7000°/s 2 , 4000-6000°/s 2 , and 1000-7000°/s 2 in the lateral SSC and 3000-6000°/s 2 in the anterior SSC (p<0.05).The FHIT is a noninvasive test battery that functionally evaluates the VOR of the six semicircular canals. In clinical use, the determination of normative values at all accelerations (1000-7000 degrees/s 2 ) constitutes an important database for future studies to distinguish pathologic results.