Body sway responses to pseudorandom support surface translations of vestibular loss subjects resemble those of vestibular able subjects

•We compared responses to support surface translations of vestibular-able and vestibular-loss subjects.•Eyes-closed and eyes-open conditions were tested· The support surface was translated in anterior-posterior direction. Motion profiles were constructed from pseudo-random-ternary sequences (PRTS).•...

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Bibliographic Details
Published in:Neuroscience letters Vol. 736; p. 135271
Main Authors: Lippi, V., Assländer, L., Akcay, E., Mergner, T.
Format: Journal Article
Language:English
Published: Ireland Elsevier B.V 25.09.2020
Subjects:
Adolescent
Adult
Female
Hearing Loss - physiopathology
Human postural responses
Humans
Male
Postural Balance - physiology
Proprioception
Proprioception - physiology
Support surface translation
Vestibular Diseases - physiopathology
Vestibular loss
Vestibule, Labyrinth - physiopathology
Young Adult
Human postural responses
Support surface translation
Proprioception
Vestibular loss
ISSN:0304-3940, 1872-7972, 1872-7972
Online Access:Get full text
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Summary:•We compared responses to support surface translations of vestibular-able and vestibular-loss subjects.•Eyes-closed and eyes-open conditions were tested· The support surface was translated in anterior-posterior direction. Motion profiles were constructed from pseudo-random-ternary sequences (PRTS).•Vestibular-able closely resembled those of the vestibular-loss subjects for both Eyes-closed and eyes-open.•Visual conditions had a strong effect on the response producing two specific response patterns. Body sway responses evoked by a horizontal acceleration of a level and firm support surface are particular in that the vestibular information on body-space angle BS resembles the proprioceptive information on body-foot angle BF. We compared corresponding eyes-closed responses of vestibular-able (VA) and vestibular-loss (VL) subjects, postulating a close correspondence. In contradistinction to previous studies, we used an unpredictable (pseudorandom) stimulus and found that the eyes-closed and eyes-open responses of the VA closely resembled those of the VL subjects, as expected. We further conclude that the vestibular signals coding head linear translation in VA subjects has in this case too little functional relevance to cause a notable difference between the subject groups.
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ISSN:0304-3940
1872-7972
1872-7972
DOI:10.1016/j.neulet.2020.135271