An investigation of the effects of various proprioceptive inputs on vestibuloocular reflex and otolith organs
Acta Oto-Laryngologica, cilt.145, sa.10, ss.911-920, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 145 Sayı: 10
- Basım Tarihi: 2025
- Doi Numarası: 10.1080/00016489.2025.2549087
- Dergi Adı: Acta Oto-Laryngologica
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, International Bibliography of Social Sciences, Biotechnology Research Abstracts, CAB Abstracts, CINAHL, EMBASE, Linguistics & Language Behavior Abstracts, Veterinary Science Database
- Sayfa Sayıları: ss.911-920
- Anahtar Kelimeler: posture, Proprioceptive system, vestibular evoked myogenic potentials, vestibulo-ocular reflex, video head impulse test
- İnönü Üniversitesi Adresli: Evet
Özet
Background: The vestibular system is crucial for balance and gaze stability. Proprioceptive inputs from the musculoskeletal system significantly contribute to vestibular processing, especially under postural challenge. Objectives: To examine how proprioceptive inputs in various body positions affect the vestibulo-ocular reflex (VOR) and otolith organ function. Materials and methods: Thirty healthy adults (18–40 years, no vertiginous symptoms) underwent cervical and ocular vestibular evoked myogenic potentials (c-VEMP, o-VEMP) and video head impulse testing (v-HIT) in four positions: sitting, standing, one-leg standing, and on a balance disk. Primary outcomes included latency, amplitude, and asymmetry for VEMPs; gain and asymmetry for semicircular canals (SCCs) via v-HIT. Results: c-VEMP latencies and amplitudes did not differ significantly across positions; however, amplitude asymmetry was significantly different between sitting and other conditions (p = .041). o-VEMP results remained consistent (p > .05). v-HIT revealed progressively reduced SCC gain from sitting to disk stance, with significant decreases in lateral SCCs (p < .05) and vertical SCCs (p < .001); asymmetry remained stable. Conclusions and significance: Increased proprioceptive demand reduced VOR gain and modified c-VEMP asymmetry, reflecting enhanced vestibulospinal engagement. These outcomes likely arise from multisensory interactions rather than proprioceptive input alone, underscoring integrated sensory contributions to postural control.