Influence of the basilar membrane shape and mechanical properties in the cochlear response: A numerical study

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Areias, B (Autor) Outra; Parente, MPL (Autor) FEUP; Gentil, F (Autor) Outra; Renato Natal Jorge (Autor) FEUP

Revista

Título: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

ISSN: 0954-4119

Editora: SAGE

Indexação

ISI Web of Knowledge - 0 Citações

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Outras Informações

ID Authenticus: P-00T-PMJ

DOI: 10.1177/09544119211003443

Abstract (EN): Hearing impairment is one of the most common health disorders, affecting individuals of all ages, reducing considerably their quality of life. At present, it is known that during an acoustic stimulation a travelling wave is developed inside the cochlea. Existing mathematical and numerical models available in the literature try to describe the shape of this travelling wave, the majority of them present a set of approaches based on some limitations either or both of the mechanical properties used and the geometrical description of the realistic representation. The present numerical study highlights the distinctions of using a spiral model of the cochlea, by comparing the obtained results with a straight, or simplified model. The influence of the implantation of transversely isotropic mechanical models was also studied, by comparing the basilar membrane with isotropic and transversely isotropic mechanical properties. Values of the root mean square error calculated for all models show a greater proximity of the cochlear mapping to the Greenwood function when the basilar membrane is assumed with transversely isotropic mechanical properties for both straight and spiral model. The root-mean square errors calculated were: 2.05, 1.70, 2.72, 2.08 mm, for the straight-isotropic, straight-transversely isotropic, spiral-isotropic and spiral-transversely isotropic model, respectively.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8