Your browser doesn't support javascript.
loading
Numerical analysis of the influence of otitis media on the hearing compensation performance of round-window stimulation / 生物医学工程学杂志
Journal of Biomedical Engineering ; (6): 745-754, 2019.
Article in Chinese | WPRIM | ID: wpr-774146
ABSTRACT
In order to study the influence of tympanic membrane lesion and ossicular erosion caused by otitis media on the hearing compensation performance of round-window stimulation, a human ear finite element model including cochlear asymmetric structure was established by computed tomography (CT) technique and reverse engineering technique. The reliability of the model was verified by comparing with the published experimental data. Based on this model, the tympanic membrane lesion and ossicular erosion caused by otitis media were simulated by changing the corresponding tissue structure. Besides, these simulated diseases' effects on the round-window stimulation were studied by comparing the corresponding basilar-membrane's displacement at the frequency-dependent characteristic position. The results show that the thickening and the hardening of the tympanic membrane mainly deteriorated the hearing compensation performance of round-window stimulation in the low frequency; tympanic membrane perforation and the minor erosion of ossicle with ossicular chain connected slightly effected the hearing compensation performance of round-window stimulation. Whereas, different from the influence of the aforementioned lesions, the ossicular erosion involving the ossicular chain detachment increased its influence on performance of round-window stimulation at the low frequency. Therefore, the effect of otitis media on the hearing compensation performance of round-window stimulation should be considered comprehensively when designing its actuator, especially the low-frequency deterioration caused by the thickening and the hardening of the tympanic membrane; the actuator's low-frequency output should be enhanced accordingly to ensure its postoperative hearing compensation performance.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Otitis Media / Pathology / Physiology / Round Window, Ear / Acoustic Stimulation / Tomography, X-Ray Computed / Reproducibility of Results / Tympanic Membrane Perforation / Finite Element Analysis / Ear Ossicles Type of study: Prognostic study Limits: Humans Language: Chinese Journal: Journal of Biomedical Engineering Year: 2019 Type: Article

Similar

MEDLINE

...
LILACS

LIS

Full text: Available Index: WPRIM (Western Pacific) Main subject: Otitis Media / Pathology / Physiology / Round Window, Ear / Acoustic Stimulation / Tomography, X-Ray Computed / Reproducibility of Results / Tympanic Membrane Perforation / Finite Element Analysis / Ear Ossicles Type of study: Prognostic study Limits: Humans Language: Chinese Journal: Journal of Biomedical Engineering Year: 2019 Type: Article