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Author : Daniel John Kelly
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (81 download)
Download or read book A Study of Middle Ear Biomechanics Using the Finite Element Method written by Daniel John Kelly and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Peter Tuck-Lee
Publisher :
ISBN 13 : 9780549244967
Total Pages : 130 pages
Book Rating : 4.2/5 (449 download)
Download or read book Finite Element Analysis of Middle Ear Mechanics written by James Peter Tuck-Lee and published by . This book was released on 2007 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results for the middle ear model, using this multifrequency algorithm, are presented for intact and modified middle ear anatomies. These modifications serve to demonstrate the utility of the computational approach in understanding the relationships between the morphological structure of the middle ear and its functionality.
Author : Gary Graydon Genge
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (242 download)
Download or read book A Finite Element Analysis of the Middle Ear written by Gary Graydon Genge and published by . This book was released on 1985 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sebastian Schmidt
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 383252262X
Total Pages : 154 pages
Book Rating : 4.8/5 (325 download)
Download or read book Finite Element Simulation of External Ear Sound Fields for the Optimization of Eardrum-related Measurements written by Sebastian Schmidt and published by Logos Verlag Berlin GmbH. This book was released on 2009-08-31 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sound pressure pT at the human eardrum has essential advantages as reference signal in audiological and psychoacoustical experiments. Unfortunately, precise pressure measurements very close to the tympanic membrane are difficult. In practice, the microphone has to be positioned at a certain distance from the eardrum. The measured pressure then has to be transformed to the eardrum. As a "classical" approach for the estimation of the necessary transfer function, an acoustical network model of the ear canal is developed from geometrical data of the canal (cross-sectional area function) which is in turn determined from measurements of its acoustical input impedance. Such methods, however, do not provide robust results. In this thesis, the concept of one-dimensional models of the ear canal is examined to find the origin of these errors. For this purpose, the sound field at the human external ear was analyzed using finite element models. Inside the canal, irregular three-dimensional structures occur that cannot be modelled accurately using classical one-dimensional network concepts. Upon these findings, an accurate, efficient and highly feasible method for the estimation of pT was developed. Equal-loudness level contours with reference to the eardrum pressure that were measured as pilot application of the new method are presented.
Author : Tristram Hugh John Lesser
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (222 download)
Download or read book A Theoretical Study Into the Effect of Load on the Human Eardrum and Middle Ear Using Finite Element Analysis written by Tristram Hugh John Lesser and published by . This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)
Download or read book A Finite-Element Model for Evaluation of Middle Ear Mechanics written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer model of the middle ear, ossicular chain and eardrum was established using the finite-element method. A preliminary comparison of the model with measurements made in human-cadaver ears shows that the model is in approximate agreement with the form of the middle ear function. The computer model will be used for implant design.
Author :
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.:/5 (94 download)
Download or read book A Theoretical Study Into the Effect of Load on the Tympanic Membrane and Middle Ear Using Finite Element Analysis written by and published by . This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sunil Puria
Publisher : Springer Science & Business Media
ISBN 13 : 1461465915
Total Pages : 320 pages
Book Rating : 4.4/5 (614 download)
Download or read book The Middle Ear written by Sunil Puria and published by Springer Science & Business Media. This book was released on 2013-03-19 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The middle ear plays a vital role in the sense and sensitivity of hearing. Of the various characteristics that distinguish mammals from other vertebrates, several pertain specifically to the middle-ear system, such as the presence of three middle-ear bones and the four-layer composite structure of the tympanic membrane. The Middle Ear attempts to elucidate the role this system plays in sound transmission, as viewed from both scientific and clinical perspectives.
Author : Richard H. Gallagher
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.F/5 ( download)
Download or read book Finite Elements in Biomechanics written by Richard H. Gallagher and published by John Wiley & Sons. This book was released on 1982 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rabeb Ben Kahla
Publisher : John Wiley & Sons
ISBN 13 : 1786305186
Total Pages : 200 pages
Book Rating : 4.7/5 (863 download)
Download or read book Finite Element Method and Medical Imaging Techniques in Bone Biomechanics written by Rabeb Ben Kahla and published by John Wiley & Sons. This book was released on 2020-01-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital models based on data from medical images have recently become widespread in the field of biomechanics. This book summarizes medical imaging techniques and processing procedures, both of which are necessary for creating bone models with finite element methods. Chapter 1 introduces the main principles and the application of the most commonly used medical imaging techniques. Chapter 2 describes the major methods and steps of medical image analysis and processing. Chapter 3 presents a brief review of recent studies on reconstructed finite element bone models, based on medical images. Finally, Chapter 4 reveals the digital results obtained for the main bone sites that have been targeted by finite element modeling in recent years.
Author : Alla Borisyuk
Publisher : Springer Science & Business Media
ISBN 13 : 9783540238584
Total Pages : 184 pages
Book Rating : 4.2/5 (385 download)
Download or read book Tutorials in Mathematical Biosciences I written by Alla Borisyuk and published by Springer Science & Business Media. This book was released on 2005-02-18 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume introduces some basic theories on computational neuroscience. Chapter 1 is a brief introduction to neurons, tailored to the subsequent chapters. Chapter 2 is a self-contained introduction to dynamical systems and bifurcation theory, oriented towards neuronal dynamics. The theory is illustrated with a model of Parkinson's disease. Chapter 3 reviews the theory of coupled neural oscillators observed throughout the nervous systems at all levels; it describes how oscillations arise, what pattern they take, and how they depend on excitory or inhibitory synaptic connections. Chapter 4 specializes to one particular neuronal system, namely, the auditory system. It includes a self-contained introduction, from the anatomy and physiology of the inner ear to the neuronal network that connects the hair cells to the cortex, and describes various models of subsystems.
Author : Kiyofumi Gyo
Publisher : World Scientific
ISBN 13 : 9814485047
Total Pages : 457 pages
Book Rating : 4.8/5 (144 download)
Download or read book Middle Ear Mechanics In Research And Otology - Proceedings Of The 3rd Symposium written by Kiyofumi Gyo and published by World Scientific. This book was released on 2004-07-26 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to facilitate the exchange of ideas between otosurgeons and engineers on common topics such as middle ear function, tympanoplasty, implantable hearing devices and ear prostheses. Due to recent advances in technology, gene-therapy and tissue-engineering procedures will also be important issues in the treatment of middle ear disease.
Author : Robert Keith Duncan
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (291 download)
Download or read book Finite-element Analysis of Inner Ear Hair Bundles written by Robert Keith Duncan and published by . This book was released on 1993 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xuan Wang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (111 download)
Download or read book Finite-element Modelling of the Human Middle Ear Based on X-ray Micro-computed Tomography and Doppler Optical Coherence Tomography in the Same Ear written by Xuan Wang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The middle ear plays a critical role in transferring sound into the inner ear. The vibration patterns of the tympanic membrane (TM) and ossicles have been investigated by many groups but, particularly at high frequencies, are still not well understood. Computational modelling of the middle ear offers a pathway toward a better understanding of the mechanical function of these structures. The tuning and validation of such models require accurate anatomical and mechanical experimental data, but such data usually come from populations of ears and little is known about how differences in individual anatomy and material properties affect middle-ear function. In this study we created a finite-element (FE) numerical model of a middle ear and validated it against vibration measurements from the same ear.A real-time phase-sensitive Doppler optical coherence tomography (OCT) system was used to measure the vibrations of both the TM and the ossicles of a human temporal bone at a stimulation frequency of 500 Hz. The measured vibration pattern of the TM showed a maximal displacement in the posterior region and a smaller maximum in the anterior region. The experimental data also showed smaller displacements on the ossicles, while the cochlear promontory appeared immobile as expected.A 3-D X-ray micro-computed tomography (microCT) scan was acquired for the same ear. A FE model of the middle ear was built using a combination of locally developed and other free and open-source software. The geometry was based on semi-automatic segmentation of the microCT images, and material properties were based on previous studies. A sensitivity analysis was performed to analyze the relative importance of the various parameters. The Doppler OCT images, masked by B-mode OCT images to reduce noise, were also segmented and the resulting 3-D model was transformed to Cartesian coordinates and aligned with the microCT-based model.Two FE solvers (Code_Aster and SAP IV) were used as part of the verification process. The simulated vibration patterns from the different solvers were compared with the measured Doppler-mode OCT velocity data and with data from the literature. The simulation results match well with the shape of the measured vibration pattern of the TM at 500 Hz. Co-registration of OCT and microCT for individual ears is a viable approach for building and validating FE models. If extended to clinical CT scans, this process could lead to patient-specific models and improved diagnosis of pathological changes in the middle ear. The process of creating FE models for the middle ear would need to be streamlined for clinical applications." --
Author : Mattia Ferrazzini
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (853 download)
Download or read book Virtual Middle Ear written by Mattia Ferrazzini and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mattia Ferrazzini
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (853 download)
Download or read book Virtual Middle Ear written by Mattia Ferrazzini and published by . This book was released on 2003 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John J. Rosowski
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.E/5 ( download)
Download or read book Biomechanics of Hearing written by John J. Rosowski and published by . This book was released on 1999 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: How does the structure of the ear define normal auditory function and how do pathologically and surgically induced changes in the ear structure change hearing? This volume presents the results of the Euromech Colloquium on 'Biomechanics of Hearing'. Attended by experts - engineers, physicists, audiologists - active in different fields of modern measurement techniques, modeling and simulation and microsurgery with applications to hearing. Common themes were the description of auditory function on the basis of mathematical models of the middle and inner ear and identification, i.e. the use of measurements of middle and inner ear function to evaluate the parameters of the suggested models for normal, pathological and reconstructed ears and to refine them in their structure. The collected papers point out the positive accomplishments that can be derived from quantitative multidisciplinary approaches to hearing science. This volume is indispensable reading for audiologists, physicians and hearing scientists interested in the mechanics and acoustics of the auditory periphery.
