Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction

Abstract A single-blind study to investigate the effects of noisy galvanic vestibular stimulation (nGVS) in straight walking and 2 Hz head yaw walking for healthy and bilateral vestibular hypofunction (BVH) participants in light and dark conditions. The optimal stimulation intensity for each partici...

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Autores principales:	Po-Yin Chen, Ying-Chun Jheng, Chien-Chih Wang, Shih-En Huang, Ting-Hua Yang, Po-Cheng Hsu, Chia-Hua Kuo, Yi-Ying Lin, Wei-Yi Lai, Chung-Lan Kao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ea213d95e9874bef8ba183164a7b8f14
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spelling	oai:doaj.org-article:ea213d95e9874bef8ba183164a7b8f142021-12-02T14:03:59ZEffect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction10.1038/s41598-021-83206-z2045-2322https://doaj.org/article/ea213d95e9874bef8ba183164a7b8f142021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83206-zhttps://doaj.org/toc/2045-2322Abstract A single-blind study to investigate the effects of noisy galvanic vestibular stimulation (nGVS) in straight walking and 2 Hz head yaw walking for healthy and bilateral vestibular hypofunction (BVH) participants in light and dark conditions. The optimal stimulation intensity for each participant was determined by calculating standing stability on a force plate while randomly applying six graded nGVS intensities (0–1000 µA). The chest–pelvic (C/P) ratio and lateral deviation of the center of mass (COM) were measured by motion capture during straight and 2 Hz head yaw walking in light and dark conditions. Participants were blinded to nGVS served randomly and imperceivably. Ten BVH patients and 16 healthy participants completed all trials. In the light condition, the COM lateral deviation significantly decreased only in straight walking (p = 0.037) with nGVS for the BVH. In the dark condition, both healthy (p = 0.026) and BVH (p = 0.017) exhibited decreased lateral deviation during nGVS. The C/P ratio decreased significantly in BVH for 2 Hz head yaw walking with nGVS (p = 0.005) in light conditions. This study demonstrated that nGVS effectively reduced walking deviations, especially in visual deprived condition for the BVH. Applying nGVS with different head rotation frequencies and light exposure levels may accelerate the rehabilitation process for patients with BVH. Clinical Trial Registration This clinical trial was prospectively registered at www.clinicaltrials.gov with the Unique identifier: NCT03554941. Date of registration: (13/06/2018).Po-Yin ChenYing-Chun JhengChien-Chih WangShih-En HuangTing-Hua YangPo-Cheng HsuChia-Hua KuoYi-Ying LinWei-Yi LaiChung-Lan KaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Po-Yin Chen Ying-Chun Jheng Chien-Chih Wang Shih-En Huang Ting-Hua Yang Po-Cheng Hsu Chia-Hua Kuo Yi-Ying Lin Wei-Yi Lai Chung-Lan Kao Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
description	Abstract A single-blind study to investigate the effects of noisy galvanic vestibular stimulation (nGVS) in straight walking and 2 Hz head yaw walking for healthy and bilateral vestibular hypofunction (BVH) participants in light and dark conditions. The optimal stimulation intensity for each participant was determined by calculating standing stability on a force plate while randomly applying six graded nGVS intensities (0–1000 µA). The chest–pelvic (C/P) ratio and lateral deviation of the center of mass (COM) were measured by motion capture during straight and 2 Hz head yaw walking in light and dark conditions. Participants were blinded to nGVS served randomly and imperceivably. Ten BVH patients and 16 healthy participants completed all trials. In the light condition, the COM lateral deviation significantly decreased only in straight walking (p = 0.037) with nGVS for the BVH. In the dark condition, both healthy (p = 0.026) and BVH (p = 0.017) exhibited decreased lateral deviation during nGVS. The C/P ratio decreased significantly in BVH for 2 Hz head yaw walking with nGVS (p = 0.005) in light conditions. This study demonstrated that nGVS effectively reduced walking deviations, especially in visual deprived condition for the BVH. Applying nGVS with different head rotation frequencies and light exposure levels may accelerate the rehabilitation process for patients with BVH. Clinical Trial Registration This clinical trial was prospectively registered at www.clinicaltrials.gov with the Unique identifier: NCT03554941. Date of registration: (13/06/2018).
format	article
author	Po-Yin Chen Ying-Chun Jheng Chien-Chih Wang Shih-En Huang Ting-Hua Yang Po-Cheng Hsu Chia-Hua Kuo Yi-Ying Lin Wei-Yi Lai Chung-Lan Kao
author_facet	Po-Yin Chen Ying-Chun Jheng Chien-Chih Wang Shih-En Huang Ting-Hua Yang Po-Cheng Hsu Chia-Hua Kuo Yi-Ying Lin Wei-Yi Lai Chung-Lan Kao
author_sort	Po-Yin Chen
title	Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
title_short	Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
title_full	Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
title_fullStr	Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
title_full_unstemmed	Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
title_sort	effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ea213d95e9874bef8ba183164a7b8f14
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Effect of noisy galvanic vestibular stimulation on dynamic posture sway under visual deprivation in patients with bilateral vestibular hypofunction

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