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    Evaluation of vestibulo-ocular reflex with functional head impulse test in healthy individuals: normative values
    (Frontiers Media Sa, 2023) Cengiz, Deniz Ugur; Erbek, Hatice Seyra; Colak, Sanem Can; Kurtcu, Busra; Demirel Birisik, Sumeyye; Karababa, Ercan; Kusman, Busra
    Objectives: This study aimed to determine the normative values of the functional head impulse test (fHIT) test in healthy young adults.Materials and methods: 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 4,000-6,000 degrees/s(2) and 1,000-7,000 degrees/s(2) were 88.52 +/- 9.04 and 89.91 +/- 6.95, respectively; for the posterior SSC, the mean %CA values for SSC 3000-6,000 degrees/s(2) and 1,000-7,000 degrees/s(2) were 90.63 +/- 8.69 and 91.16 +/- 7.42, respectively; for the anterior SSC, the mean %CA values for 3,000-6,000 degrees/s(2) and 1,000-7,000 degrees/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 6,000-7,000 degrees/s(2), 4,000-6,000 degrees/s(2), and 1,000-7,000 degrees/s(2) in the lateral SSC and 3,000-6,000 degrees/s(2) in the anterior SSC (p < 0.05).Conclusion: 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 (1,000-7,000 degrees/s(2)) constitutes an important database for future studies to distinguish pathologic results.
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    Psychometric properties of the Turkish version of the Vestibular Migraine Patient Assessment Tool and Handicap Inventory
    (Tubitak Scientific & Technological Research Council Turkey, 2024) Cengiz, Deniz Ugur; Inceoglu, Feyza; Karababa, Ercan; Satar, Buelent; Erbek, Hatice Seyra; Bayindir, Tuba; Kurtcu, Buesra
    Background/aim: There are insufficient tools to assist in the diagnosis and treatment of vestibular migraine. Hence, the aim of this study was to perform the Turkish adaptation of the Vestibular Migraine Patient Assessment Tool and Handicap Inventory (VM-PATHI). Materials and methods: After the language and content validity was completed, a pilot study was conducted. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to test construct validity, and as a result of the validity analyses, Cronbach's alpha internal consistency coefficient and test-retest analyses were conducted for reliability. Results: In the study, in which 289 participants were evaluated, the Kaiser-Meyer-Olkin coefficient was calculated as 0.903. The percentage of variance explained by the EFA was 67.246% and the range of factor load change was 0.433-0.828. The scale structure was tested with CFA and the model was confirmed with adequate goodness of fit index values. The Cronbach's alpha internal consistency coefficient of the scale was 0.931. Conclusion: The VM-PATHI is a valid and reliable tool for the subjective evaluation of vestibular migraine in T & uuml;rkiye.