Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model

Intracochlear fluid pressure and cochlear input impedance are simulated and compared with in-vivo physiological measurements. The objective of this work is to compare the calculations and measurements for the cochlear fluid pressure (PST) and related cochlear input impedance (ZC) with “push-pull” ac...

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Main Authors: Yoon, Yong-Jin, Baek, Jong Dae, Shin, Choongsoo, Lee, Joo Hyun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/104512
http://hdl.handle.net/10220/17001
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1045122020-03-07T13:22:24Z Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model Yoon, Yong-Jin Baek, Jong Dae Shin, Choongsoo Lee, Joo Hyun School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Intracochlear fluid pressure and cochlear input impedance are simulated and compared with in-vivo physiological measurements. The objective of this work is to compare the calculations and measurements for the cochlear fluid pressure (PST) and related cochlear input impedance (ZC) with “push-pull” active cochlear model involving cochlear cytoarchitecture. Presented three-dimensional cochlear hydro-dynamic model is developed by implementing an active “push-pull” cochlear amplifier mechanism based on Y-shaped organ of Corti cytoarchitecture and using the time-averaged Lagrangian method. For the gerbil PST magnitude, the model results shows (i) the nonlinearity with 10 dB gain, (ii) the 2/3 octave shift in the active case, and (iii) the presence of peaks and valleys which are observed in gerbil in vivo measurement. Additionally, simulation results of chinchilla and cat cochlear |ZC| reflect overall trend of animal measurements, while the gerbil and human cochlear |ZC| are 10 dB lower (> 2 kHz) and 7 dB lower (< 2 kHz) than the measurements respectively. 2013-10-29T07:34:58Z 2019-12-06T21:34:16Z 2013-10-29T07:34:58Z 2019-12-06T21:34:16Z 2012 2012 Journal Article Yoon, Y.-J., Baek, J. D., Shin, C., & Lee, J. H. (2012). Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model. International Journal of Precision Engineering and Manufacturing, 13(9), 1689-1695. https://hdl.handle.net/10356/104512 http://hdl.handle.net/10220/17001 10.1007/s12541-012-0221-1 en International journal of precision engineering and manufacturing
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Yoon, Yong-Jin
Baek, Jong Dae
Shin, Choongsoo
Lee, Joo Hyun
Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
description Intracochlear fluid pressure and cochlear input impedance are simulated and compared with in-vivo physiological measurements. The objective of this work is to compare the calculations and measurements for the cochlear fluid pressure (PST) and related cochlear input impedance (ZC) with “push-pull” active cochlear model involving cochlear cytoarchitecture. Presented three-dimensional cochlear hydro-dynamic model is developed by implementing an active “push-pull” cochlear amplifier mechanism based on Y-shaped organ of Corti cytoarchitecture and using the time-averaged Lagrangian method. For the gerbil PST magnitude, the model results shows (i) the nonlinearity with 10 dB gain, (ii) the 2/3 octave shift in the active case, and (iii) the presence of peaks and valleys which are observed in gerbil in vivo measurement. Additionally, simulation results of chinchilla and cat cochlear |ZC| reflect overall trend of animal measurements, while the gerbil and human cochlear |ZC| are 10 dB lower (> 2 kHz) and 7 dB lower (< 2 kHz) than the measurements respectively.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Yoon, Yong-Jin
Baek, Jong Dae
Shin, Choongsoo
Lee, Joo Hyun
format Article
author Yoon, Yong-Jin
Baek, Jong Dae
Shin, Choongsoo
Lee, Joo Hyun
author_sort Yoon, Yong-Jin
title Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
title_short Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
title_full Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
title_fullStr Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
title_full_unstemmed Intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
title_sort intracochlear fluid pressure and cochlear input impedance from push-pull amplification model
publishDate 2013
url https://hdl.handle.net/10356/104512
http://hdl.handle.net/10220/17001
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