Sound energy absorbance changes in the elderly with presbycusis with normal outer and middle ear

Yılmaz, Nihat; Söylemez, Emre; Sanuc, Merve Betul; BAYRAK>, Muhammed Harun; Sener, Veyis

doi:10.1007/s00405-022-07742-8

Cited by 3 publications

(5 citation statements)

References 22 publications

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“…Nonetheless, experimental results showed discrepancies in these figures. Previous work [46] exhibited a similar maximum EA frequency but with a value close to 1 while other results [5,23,25,26,36] showed that the first part was nearly identical to our findings in this current study, with a maximum around 1 kHz and a value of 0.6, except that the EA continued to increase to 3-4 kHz, with values between 0.7 and 1.…”

Section: Discussionsupporting

confidence: 90%

See 1 more Smart Citation

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Garcia-Gonzalez,

Castro-Egler,

Aguilera-Garcia

et al. 2023

Preprint

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here are different ways to analyse energy absorbance (EA) in the human auditory system. In previous research, we developed a complete finite element model (FEM) of the human auditory system. In this mentioned work, the external auditory canal (EAC), middle ear, and inner ear (spiral cochlea, vestibule, and semi-circular canals) were modelled based on human temporal bone histological sections. Multiple acoustic, structure and fluid-coupled analyses were conducted using the FEM to perform harmonic analyses in the 0.1–10 kHz range. Once the FEM had been validated with published experimental data, the FEM numerical results were used to calculate the EA or energy reflected (ER) by the tympanic membrane. This EA was also measured in clinical audiology tests which were used as a diagnostic parameter. A mathematical approach was developed to calculate the EA and ER, with numerical and experimental results showing adequate correlation up to 1 kHz. Another published FEM had adapted its boundary conditions to replicate experimental results. Here, we recalculated those numerical results by applying the natural boundary conditions of human hearing and found that the results almost totally agreed with our FEM. This boundary problem is frequent and problematic in experimental hearing test protocols: the more invasive they are, the more the results are affected. One of the main objectives of using FEMs is to explore how the experimental test conditions influence the results. Further work will still be required to uncover the relationship between the middle ear structure and EA to clarify how to best use FEMs. Moreover, the FEM boundary conditions must be more representative in future work to ensure their adequate interpretation.

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Section: Discussionsupporting

confidence: 90%

“…Our FEM results are more coincident with those presented by Feeney [45] Figure 7. Energy absorbed by the tympanic membrane for the finite element models and experimental results described in other publications [29,45,5,4,46].…”

Section: Energy Absorbance At the Tympanic Membranementioning

confidence: 99%

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Garcia-Gonzalez,

Castro-Egler,

Aguilera-Garcia

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Nonetheless, experimental results showed discrepancies in these figures. Previous work [ 46 ] exhibited a similar maximum EA frequency but with a value close to 1 while other results [ 5 , 23 , 25 , 26 , 36 ] showed that the first part was nearly identical to our findings in this current study, with a maximum around 1 kHz and a value of 0.6, except that the EA continued to increase to 3–4 kHz, with values between 0.7 and 1.…”

Section: Discussionsupporting

confidence: 90%

Measuring absorbed energy in the human auditory system using finite element models: A comparison with experimental results

Castro-Egler,

Garcia-Gonzalez,

Aguilera

et al. 2024

THC

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BACKGROUND: There are different ways to analyze energy absorbance (EA) in the human auditory system. In previous research, we developed a complete finite element model (FEM) of the human auditory system. OBJECTIVE: In this current work, the external auditory canal (EAC), middle ear, and inner ear (spiral cochlea, vestibule, and semi-circular canals) were modelled based on human temporal bone histological sections. METHODS: Multiple acoustic, structure, and fluid-coupled analyses were conducted using the FEM to perform harmonic analyses in the 0.1–10 kHz range. Once the FEM had been validated with published experimental data, its numerical results were used to calculate the EA or energy reflected (ER) by the tympanic membrane. This EA was also measured in clinical audiology tests which were used as a diagnostic parameter. RESULTS: A mathematical approach was developed to calculate the EA and ER, with numerical and experimental results showing adequate correlation up to 1 kHz. Another published FEM had adapted its boundary conditions to replicate experimental results. Here, we recalculated those numerical results by applying the natural boundary conditions of human hearing and found that the results almost totally agreed with our FEM. CONCLUSION: This boundary problem is frequent and problematic in experimental hearing test protocols: the more invasive they are, the more the results are affected. One of the main objectives of using FEMs is to explore how the experimental test conditions influence the results. Further work will still be required to uncover the relationship between middle ear structures and EA to clarify how to best use FEMs. Moreover, the FEM boundary conditions must be more representative in future work to ensure their adequate interpretation.

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“…When modelling the ossicular chain and cochlea, this maximum value is reduced to 0.6, and the frequency slightly increases to 1 kHz. Experimental results show discrepancies; This work [11] exhibits a similar frequency of maximum EA but with a value close to 1. Other results (15,31,33,34,44) have a first part nearly identical to that of this study, with a maximum around 1 kHz and a value of 0.6, but the significant difference is that EA continues to rise to 3-4 kHz with values between 0.7 and 1.…”

Section: Discussionmentioning

confidence: 66%

“…In recent years, numerous studies have been developed to measure acoustic impedances [1][2][3][4][5][6][7][8][9][10][11]. Moller [12] first introduced the use of 'calibrated sound sources' as a means for measuring impedances, a method that is now extensively used [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Castro-Egler,

Garcia-Gonzalez,

Aguilera-Garcia

et al. 2024

Preprint

View full text Add to dashboard Cite

There are different ways to analyse energy absorbance (EA) in the human auditory system. In previous research, we developed a complete finite element model (FEM) of the human auditory system. In this mentioned work, the external auditory canal (EAC), middle ear, and inner ear (spiral cochlea, vestibule, and semi-circular canals) were modelled based on human temporal bone histological sections. Multiple acoustic, structure and fluid-coupled analyses were conducted using the FEM to perform harmonic analyses in the 0.1–10 kHz range. Once the FEM had been validated with published experimental data, the FEM numerical results were used to calculate the EA or energy reflected (ER) by the tympanic membrane. This EA was also measured in clinical audiology tests which were used as a diagnostic parameter. A mathematical approach was developed to calculate the EA and ER, with numerical and experimental results showing adequate correlation up to 1 kHz. Another published FEM had adapted its boundary conditions to replicate experimental results. Here, we recalculated those numerical results by applying the natural boundary conditions of human hearing and found that the results almost totally agreed with our FEM. This boundary problem is frequent and problematic in experimental hearing test protocols: the more invasive they are, the more the results are affected. One of the main objectives of using FEMs is to explore how the experimental test conditions influence the results. Further work will still be required to uncover the relationship between the middle ear structure and EA to clarify how to best use FEMs. Moreover, the FEM boundary conditions must be more representative in future work to ensure their adequate interpretation.

show abstract

Sound energy absorbance changes in the elderly with presbycusis with normal outer and middle ear

Cited by 3 publications

References 22 publications

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Measuring absorbed energy in the human auditory system using finite element models: A comparison with experimental results

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

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