Evaluating visual-vestibular interactions in motion sickness susceptibility with static subjective visual vertical, dynamic subjective visual vertical, and rod-and-frame test
Journal of Vestibular Research: Equilibrium and Orientation, cilt.36, sa.2, ss.78-88, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 36 Sayı: 2
- Basım Tarihi: 2026
- Doi Numarası: 10.1177/09574271251371540
- Dergi Adı: Journal of Vestibular Research: Equilibrium and Orientation
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, EMBASE, MEDLINE, Psycinfo, Academic Search Ultimate (EBSCO), Biomedical Reference Collection: Corporate Edition (EBSCO), Engineering Source (EBSCO)
- Sayfa Sayıları: ss.78-88
- Anahtar Kelimeler: motion sickness susceptibility, subjective visual vertical, rod-and-frame test, head tilt, visual dependence
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Background: Motion sickness (MS) occurs when the brain receives conflicting signals about body movement from the visual, vestibular, and proprioceptive systems. The otolith organs play a key role in perceiving verticality, and their function may be influenced by MS susceptibility. Objective: This study aimed to investigate the effect of MS susceptibility on otolith-mediated verticality perception across different head positions. Methods: Forty-seven participants were classified into two groups based on the Motion Sickness Susceptibility Questionnaire–Short Form (MSSQ-SF): an MS group (n = 24) and a control group (n = 23). All participants completed static Subjective Visual Vertical (SVV), dynamic Subjective Visual Vertical (DVV), and Rod-and-Frame Test (RFT) using a virtual reality system. Measurements were conducted in three head tilt (upright, 30° left, 30° right). The absolute deviation from true vertical was calculated for each test. Results: While no significant differences were found in SVV performance between groups across head-tilt angles, the MS group exhibited significantly greater deviations in DVV at all positions and in RFT during 30° head tilts. Higher MSSQ scores correlated with greater deviations in DVV and RFT under tilt conditions. Conclusions: Although static verticality perception remains intact, individuals with MS exhibit greater deviations under dynamic and visually misleading conditions, suggesting subtle vestibular-perceptual deficits.