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2 edition of Longitudinal elasticity of the cochlear partition and distortion product otoacoustic emissions found in the catalog.

Longitudinal elasticity of the cochlear partition and distortion product otoacoustic emissions

Taha Jaffer

Longitudinal elasticity of the cochlear partition and distortion product otoacoustic emissions

how dead ears produce sounds.

by Taha Jaffer

  • 43 Want to read
  • 24 Currently reading

Published .
Written in English


The Physical Object
Pagination1 v. (in various foliations).
ID Numbers
Open LibraryOL19938789M
ISBN 100612746356

Among OAEs, distortion-product otoacoustic emissions (DPOAEs) have a particular clinical utility, as they can be recorded at selected frequencies ; in fact, while click-evoked OAEs are the result of a wide stimulation of the entire cochlea, DPOAEs, on the contrary, may yield more precise information about cochlear function because of its kind Cited by: 8. Cochlear Mechanisms and Otoacoustic Emissions: 2nd International Symposium, Rome, March (Advances in Audiology, Vol. 7) Hardcover – September 6, Format: Hardcover.

canal. One accordingly refers to these tones as distortion-product otoacoustic emissions. For a given frequency, the peak of the travelling wave is relatively sharp, with a longitudinal extent of only Bmm (refs 3,4). The cubic distortion frequencies 2f 1 f 2 or 2f 2 f 1, for instance, are therefore only created at a significant amplitude. A Wave of Cochlear Bone Deformation Can Underlie Bone Conduction and Otoacoustic Emissions Tatjana Tchumatchenko∗ and Tobias Reichenbach† ∗Theory of Neural Dynamics Group, Max Planck Institute for Brain Research, Frankfurt am Main, Germany †Department of Bioengineering, Imperial College London, South Kensington Campus, London, UK Abstract. A sound signal is transmitted to .

Otoacoustic Emissions from Residual Oscillations of the Cochlear Basilar Membrane in a Human Ear Model RENATO NOBILI, 1 ALESˇ VETESˇNIK,2,4 LORENZO TURICCHIA,3 AND FABIO MAMMANO 1,4 1Dipartimento di Fisica ‘‘G. Galilei’’, Universita` di Padova, via Marzolo 8, Padova, Italy 2Department of Theoretical Physics, Palacky´ University, Svob Olomouc, Czech Republic. GROWTH OF DISTORTION-PRODUCT OTOACOUSTIC EMISSIONS IN A NONLINEAR, ACTIVE MODEL OF COCHLEAR MECHANICS S. T. NEELY, M. P. GORGA AND P. A. DORN Boys Town National Research Hospital, North 30 Street, Omaha, Nebraska E-mail: [email protected] Evidence of compressive growth of basilar membrane displacement can be observed in.


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Longitudinal elasticity of the cochlear partition and distortion product otoacoustic emissions by Taha Jaffer Download PDF EPUB FB2

Longitudinal elasticity of the cochlear partition and distortion product otoacoustic emissions Article January with 3 Reads How we measure 'reads'Author: Taha Jaffer. LO'IGITUDINAL EL.4STICITY OF THE COCHLEAR PARTITION AND DISTORTION PRODUCT OTOACOUSTIC EMlSSIONS Master of Applied Science Sources of Longitudinal Coupling in the Cochlear Partition Effects of Longitudinal Coupting 1 S.

1 Entrainment Phenomena Simulated Recordings of Distortion Product Otoacoustic Emissions fromAuthor: Taha Jaffer. Distortion product otoacoustic emissions (DPOAEs) reflect outer hnir cell integrity and cochlear function.

When used appropriately in the audiology clinic, they are an effective diagnostic tool and can detect hearing loss with accuracy. DPOAEs are easily and rapidly recorded in newborns and children Cited by: New Views of Cochlear Function Allen F.

Ryan Part II: Populations with Normal Hearing Sensitivity 3. Spontaneous Otoacoustic Emissions Kathryn E. Bright 4. Transient Evoked Otoacoustic Emissions Theodore J. Glattke and Martin S. Robinette 5. Distortion Product Otoacoustic Emissions Brenda L. Lonsbury-Martin and Glen K.

Martin 6. A model cochlear partition involving longitudinal elasticity their ability to produce realistic cubic distortion product otoacoustic emissions. Within the framework of this model, some. This paper addresses the issue of longitudinal stiffness within the cochlea.

A one-dimensional model of the cochlear partition is presented in which the resonant sections are coupled by longitudinal elastic elements. These elements functionally represent the aggregate mechanical effect of the connective tissue that spans the length of the organ of by: 8.

Otoacoustic emissions (OAEs) are sounds which arise in the ear canal when (paradoxically) the tympanum receives vibrations transmitted backwards through the middle ear from the cochlea.

These vibrations occur as a by-product of a unique and vulnerable cochlear mechanism which has become known as the ‘cochlear amplifier’ and which contributes greatly to the sensitivity and Cited by: An otoacoustic emission (OAE) is a sound that is generated from within the inner been predicted by Austrian astrophysicist Thomas Gold inits existence was first demonstrated experimentally by British physicist David Kemp inand otoacoustic emissions have since been shown to arise through a number of different cellular and mechanical causes within the inner ear.

SYNOPSIS: Otoacoustic Emissions: Clinical Applications, is a second edition of a successful book originally published in Similar in organization to the first edition, it is divided into four sections: Perspective, Populations with Normal Hearing Sensitivity, Clinical Populations and Calibration Issues.

The generation mechanisms for otoacoustic emissions (OAEs). Distortion product OAEs (DPOAEs) travel backward by slow traveling waves. Stimulus frequency OAEs (SFOAEs) arise mainly from near the peak of the traveling wave.

Using OAEs to reveal cochlear properties. Cochlear tuning is sharper in humans than in cats, guinea pigs, and by: 7. Distortion‐product otoacoustic emissions (DPOAEs) can be measured in the ear canal following the presentation of two tones.

These emissions are generated by the outer hair cells (OHCs) of the inner ear and they are reduced or absent when the OHCs are damaged by, for example, exposure to excessive noise or ototoxic by: LONGITUDINAL OUTCOMES OF DISTORTION PRODUCT OTOACOUSTIC EMISSIONS AND WIDEBAND REFLECTANCE IN INFANTS by VIRGINIA RAMACHANDRAN DISSERTATION Submitted to the Graduate School of Wayne State University, Detroit, Michigan in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY MAJOR: COMMUNICATION.

Key Words: Auditory threshold, distortion-product otoacoustic emissions, exercise, noise Abbreviations: DPOAE = distortion-product otoacoustic emissions, TTS = temporary thresh-old shift 0 ecupational and recreational noise-induced hearing loss continues to be a significant health concern.

It is well understood that frequency, intensity, and dura. This paper presents the results of simulating the acoustic suppression of distortion-product otoacoustic emissions (DPOAEs) from a computer model of cochlear mechanics.

A tone suppressor was introduced, causing the DPOAE level to decrease, and the decrement was Cited by: 2. Greg Ollick, Sr., M.A. speaks to group of speech pathology students at the University of West Georgia on the topic of Auditory Evoked Potentials - OtoAcoustic Emissions (OAE).

Research project: Cochlear modelling of distortion product otoacoustic emissions Currently Active: Yes. Distortion product otoacoustic emissions (DPOAEs) are emitted by the cochlea when it is stimulated by two pure tones (f1 and f2 where f2>f1) simultaneously. Distortion product otoacoustic emissions (DPOAEs) elicited by a bitonal stimulus complex are low-lever sounds that are generated within the cochlea, and are easily measured by a miniature microphone system placed in the external auditory by:   The cochlear amplifier shows level-dependent function and works optimally at low levels.

For this reason, manipulation of stimulus level is a route through which the human cochlear amplifier can be investigated in a noninvasive manner. Distortion product otoacoustic emissions (DPOAEs) evoked as a function of stimulus level provide a tool for exploration of human cochlear amplifier function and Cited by: When two pure tones of high intensity (F1 = Hz and F2 =Hz) are presented and clipped, it causes distortion of the sound and results in distortion products (2F1 - F2 = Hz, 2F2-F1 = Hz) and harmonic distortions (3F1 = Hz, 3F2 = Hz).

This study used distortion product otoacoustic emissions (DPOAEs) to evaluate the cochlear amplifier of 13 tinnitus subjects and 13 non-tinnitus subjects (matched by age, sex, and audiogram) across a broad range of frequencies and : Leah C.

Acker. The purpose of this study was to compare distortion-product otoacoustic emissions (DPOEs) and click-evoked otoacoustic emissions (CEOEs) for normally-hearing human adults. The statistical analysis consisted of computing the DPOE and CEOE levels versus frequency corresponding to the 10th, 25th, 50th, 75th, and 90th percentiles among normal adult Cited by: Distortion product otoacoustic emissions ~DPOAE!

were recorded from eight human subjects with mild to moderate cochlear hearing loss, using a frequency spacing of 48 primary pairs per octave and at a level L15LdBSPL and with a fixed ratio f2 /f1. Subjects with different shapes of.

In a longitudinal study of 76 noise-exposed industrial workers, 34 (68 ears) of them were available for final evaluation after 9 years of observation.

Distortion-product otoacoustic emissions (DP) at 65/55 dB SPL and pure-tone audiometry were used to detect noise-induced inner ear : Antonis Moukos, Dimitrios G. Balatsouras, Thomas Nikolopoulos, Pavlos Maragoudakis, Evangelos I.

Yio.