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Article Dans Une Revue Journal of Clinical Medicine Année : 2023

How a Subclinical Unilateral Vestibular Signal Improves Binocular Vision

Résumé

The present study aimed to determine if an infra-liminal asymmetric vestibular signal could account for some of the visual complaints commonly encountered in chronic vestibular patients. We used infra-liminal galvanic vestibular stimulation (GVS) to investigate its potential effects on visuo-oculomotor behavior. A total of 78 healthy volunteers, 34 aged from 20 to 25 years old and 44 aged from 40 to 60 years old, were included in a crossover study to assess the impact of infra-liminal stimulation on convergence, divergence, proximal convergence point, and stereopsis. Under GVS stimulation, a repeated measures ANOVA showed a significant variation in near convergence (p < 0.001), far convergence (p < 0.001), and far divergence (p = 0.052). We also observed an unexpected effect of instantaneous blocking of the retest effect on the far divergence measurement. Further investigations are necessary to establish causal relationships, but GVS could be considered a behavioral modulator in non-pharmacological vestibular therapies.
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Dates et versions

hal-04207324 , version 1 (14-09-2023)

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Frédéric Xavier, Emmanuelle Chouin, Véronique Serin-Brackman, Alexandra Séverac Cauquil. How a Subclinical Unilateral Vestibular Signal Improves Binocular Vision. Journal of Clinical Medicine, 2023, 12 (18), pp.5847. ⟨10.3390/jcm12185847⟩. ⟨hal-04207324⟩
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