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Finite element modelling of sound transmission from outer to inner ear

2016Journal article Open access
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dc.contributor.authorAreias, Bruno
dc.contributor.authorSantos, Carla
dc.contributor.authorNatal Jorge, Renato M
dc.contributor.authorGentil, Fernanda
dc.contributor.authorParente, Marco P. L.
dc.date.accessioned2019-06-11T17:28:49Z
dc.date.available2019-06-11T17:28:49Z
dc.date.issued2016
dc.description.abstractThe ear is one of the most complex organs in the human body. Sound is a sequence of pressure waves, which propagates through a compressible media such as air. The pinna concentrates the sound waves into the external auditory meatus. In this canal, the sound is conducted to the tympanic membrane. The tympanic membrane transforms the pressure variations into mechanical displacements, which are then transmitted to the ossicles. The vibration of the stapes footplate creates pressure waves in the fluid inside the cochlea; these pressure waves stimulate the hair cells, generating electrical signals which are sent to the brain through the cochlear nerve, where they are decoded. In this work, a three-dimensional finite element model of the human ear is developed. The model incorporates the tympanic membrane, ossicular bones, part of temporal bone (external auditory meatus and tympanic cavity), middle ear ligaments and tendons, cochlear fluid, skin, ear cartilage, jaw and the air in external auditory meatus and tympanic cavity. Using the finite element method, the magnitude and the phase angle of the umbo and stapes footplate displacement are calculated. Two slightly different models are used: one model takes into consideration the presence of air in the external auditory meatus while the other does not. The middle ear sound transfer function is determined for a stimulus of 60 dB SPL, applied to the outer surface of the air in the external auditory meatus. The obtained results are compared with previously published data in the literature. This study highlights the importance of external auditory meatus in the sound transmission. The pressure gain is calculated for the external auditory meatus.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAreias, B., Santos, C., Natal Jorge, R. M., Gentil, F., & Parente, M. P. (2016). Finite element modelling of sound transmission from outer to inner ear. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 230(11), 999–1007. https://doi.org/10.1177/0954411916666109
dc.identifier.doi10.1177/0954411916666109pt_PT
dc.identifier.issn1609-0985
dc.identifier.urihttp://hdl.handle.net/10400.22/13964
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSAGE Publicationspt_PT
dc.relationIF/00159/2014pt_PT
dc.relation.publisherversionhttps://journals.sagepub.com/doi/abs/10.1177/0954411916666109pt_PT
dc.subjectAcousticspt_PT
dc.subjectComputer Simulationpt_PT
dc.subjectEarpt_PT
dc.subjectFinite Element Analysispt_PT
dc.subjectHearingpt_PT
dc.subjectTympanic Membranept_PT
dc.titleFinite element modelling of sound transmission from outer to inner earpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F50022%2F2013/PT
oaire.citation.endPage1007pt_PT
oaire.citation.issue11pt_PT
oaire.citation.startPage999pt_PT
oaire.citation.titleJournal of Medical and Biological Engineeringpt_PT
oaire.citation.volume230pt_PT
oaire.fundingStream5876
person.familyNameGentil Costa
person.givenNameMaria Fernanda
person.identifier.ciencia-id8A1B-AB35-07A4
person.identifier.orcid0000-0002-6521-3475
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa322f388-4cfc-4430-ae6f-ba10bf53758f
relation.isAuthorOfPublication.latestForDiscoverya322f388-4cfc-4430-ae6f-ba10bf53758f
relation.isProjectOfPublication6eff9af6-df17-4480-80c1-42187e287689
relation.isProjectOfPublication.latestForDiscovery6eff9af6-df17-4480-80c1-42187e287689

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