Bone conduction responses of middle ear structures in Thiel embalmed heads


Autoria(s): Arnold, Andreas Michael; Stieger, Christof; Caversaccio, Marco; Kompis, Martin; Guignard, Jérémie
Data(s)

31/12/2015

Resumo

Thiel-embalmed human whole-head specimens offer a promising alternative model for bone conduction (BC) studies of middle ear structures. In this work we present the Thiel model’s linearity and stability over time as well as its possible use in the study of a fixed ossicle chain. Using laser Doppler vibrometry (LDV), the motion of the retroauricular skull, the promontory, the stapes footplate and the round window (RW) were measured. A bone-anchored hearing aid stimulated the ears with step sinus tones logarithmically spread between 0.1 and 10 kHz. Linearity of the model was verified using input levels in steps of 10 dBV. The stability of the Thiel model over time was examined with measurements repeated after hours and weeks. The influence of a cement-fixed stapes was assessed. The middle ear elements measured responded linearly in amplitude for the applied input levels (100, 32.6, and 10 mV). The variability of measurements for both short- (2 h) and long-term (4-16 weeks) repetitions in the same ear was lower than the interindividual difference. The fixation of the stapes induced a lowered RW displacement for frequencies near 750 Hz (-4 dB) and an increased displacement for frequencies above 1 kHz (max. +3.7 dB at 4 kHz). LDV assessment of BC-induced middle ear motion in Thiel heads can be performed with stable results. The vibratory RW response is affected by the fixation of the stapes, indicating a measurable effect of ossicle chain inertia on BC response in Thiel embalmed heads.

Formato

application/pdf

Identificador

http://boris.unibe.ch/80767/1/1.4939368.pdf

Arnold, Andreas Michael; Stieger, Christof; Caversaccio, Marco; Kompis, Martin; Guignard, Jérémie (31 December 2015). Bone conduction responses of middle ear structures in Thiel embalmed heads. AIP conference proceedings, 1703(060013), 060013. American Institute of Physics 10.1063/1.4939368 <http://dx.doi.org/10.1063/1.4939368>

doi:10.7892/boris.80767

info:doi:10.1063/1.4939368

urn:issn:0094-243X

urn:isbn:978-0-7354-1350-4

Idioma(s)

eng

Publicador

American Institute of Physics

Relação

http://boris.unibe.ch/80767/

http://scitation.aip.org/content/aip/proceeding/aipcp/1703;jsessionid=5ch086h9b0r99.x-aip-live-06

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Arnold, Andreas Michael; Stieger, Christof; Caversaccio, Marco; Kompis, Martin; Guignard, Jérémie (31 December 2015). Bone conduction responses of middle ear structures in Thiel embalmed heads. AIP conference proceedings, 1703(060013), 060013. American Institute of Physics 10.1063/1.4939368 <http://dx.doi.org/10.1063/1.4939368>

Palavras-Chave #610 Medicine & health
Tipo

info:eu-repo/semantics/conferenceObject

info:eu-repo/semantics/publishedVersion

PeerReviewed