Vestibular suppression of normal bodily sounds
| Autor: | Arthur I Mallinson, Anielle Lim, N S Longridge, Jim Renshaw |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Loudness Perception Audiology Loudness Auditory canal 03 medical and health sciences 0302 clinical medicine otorhinolaryngologic diseases Medicine Humans 030223 otorhinolaryngology Acoustic reflex Cochlea Aged Vestibular system Sound (medical instrument) business.industry General Medicine Middle Aged Biting Sound Otorhinolaryngology 030220 oncology & carcinogenesis Voice Mastication Female sense organs business |
| Zdroj: | Acta oto-laryngologica. 140(5) |
| ISSN: | 1651-2251 |
| Popis: | Background: Vestibular-evoked myogenic potentials (VEMPs) are present in almost everyone. The proximity of the cochlear and vestibular end organs strongly indicates an overlap of the stimuli to which they respond.Aims/objectives: To determine the loudness of shouting compared to the external auditory canal (EAC) and explore how hyperstimulation of the cochlea and vestibular structures might be prevented.Materials and methods: We compared the loudness and frequency response of sound during shouting, biting and chewing, as well as the measurement of the loudness and frequency of sound in the external auditory canal (EAC) when a calibrated minishaker is applied to the forehead and to the upper incisor teeth.Results: We showed that vibratory sounds produced by vocalizations and oral activities were attenuated when they reached the ear, so that these sounds would not act as vestibular stimulants.Conclusions and significance: Chewing is known to cause a stapedius reflex which suppresses internal sounds to optimize audition of external sounds, while at the same time suppressing vestibular stimulation, which serves to optimize the sensitivity of the vestibular system, in order that it may respond precisely to a threat. |
| Databáze: | OpenAIRE |
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