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Time delay effect in double excited human middle ear
 
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1
Lublin University of Technology
 
2
Department of Agro-bioengineering, University of Life Sciences, Akademicka 13 20-950 Lublin, Poland
 
3
Lublin University of Technology, Nadbystrzycka 36 20-618 Lublin, Poland
 
 
Corresponding author
Robert Filip Zabłotni   

Lublin University of Technology
 
 
Adv. Sci. Technol. Res. J. 2025; 19(1):88-94
 
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ABSTRACT
In cases of significant hearing loss affecting the auditory ossicles, it is possible to attach an implant. In such cases, the implant is responsible for the movement of the stapes. However, the eardrum is not removed, it remains in the system, forcing movement of the first auditory ossicle – the malleus. The aim of this research is to present the results of stapes vibrations in the human ear with an implant under dual excitation both from the eardrum and the implant using Lumped Parameter Model with 5 degrees of freedom. The model incorporates the masses of all three auditory ossicles, as well as additional masses from the implant. The delay in the system caused by the signal reaching the implant is also considered. The results relate to work that was later transformed into an ASTM standard for ear testing ensuring the accuracy of the findings.
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