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Teses / dissertações sobre o tema "Electrocochleography"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Sass, Kornel. "Clinical electrocochleography in Menière's disease." Lund : Dept. of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Lund, Lund University, 1997. http://catalog.hathitrust.org/api/volumes/oclc/39725784.html.

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2

Harris, Frances Pauline. "Distortion-product emissions and pure-tone behavioral thresholds." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184483.

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Distortion-product emissions (DPEs) are tonal responses that may be detected in the ear canal when the ear is stimulated simultaneously by two tones that are closely spaced in frequency. In experimental animals, DPEs are reduced in amplitude or are eliminated when cochlear function is disrupted. This association has not been investigated in human subjects. This study was designed to investigate the relation of cochlear status, as determined by pure-tone behavioral thresholds, to DPE amplitude in human subjects. Forty men were selected as subjects. Twenty had normal hearing and 20 had high-freq

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3

Rogers, Michael John Christopher. "Whirler : the gene and its effect on the function of the ear." Thesis, Open University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363488.

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4

Kalin, Catherine Julia. "An Evaluation of Electrocochleography as a Diagnostic Tool for Ménière’s Disease." Thesis, University of Canterbury. Communication Disorders, 2010. http://hdl.handle.net/10092/4023.

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Ménière’s disease (MD) is an idiopathic inner ear disorder, characterised by episodes of vertigo, tinnitus, sensorineural hearing loss, and aural fullness in the affected ear. The relatively high variability of symptomological changes renders it difficult to confirm the MD diagnosis. The purpose of this study is to compare the diagnostic power of an instrumental method, electrocochleography (ECochG), and two subjective methods, including the criteria based on the clinical guidelines provided by the American Academy of Otolaryngology-Head and Neck Surgery Committee on Hearing Equilibrium (AAO

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5

Riggs, William Jason. "The Use of Auditory Evoked Potentials to Assess Encoding of the Peripheral Auditory System in Hearing-Impaired Listeners." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618232978062556.

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6

O'Beirne, Greg A. "Mathematical modelling and electrophysiological monitoring of the regulation of cochlear amplification." University of Western Australia. School of Biomedical and Chemical Sciences, 2005. http://theses.library.uwa.edu.au/adt-WU2006.0115.

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[Truncated abstract] The cochlea presumably possesses a number of regulatory mechanisms to maintain cochlear sensitivity in the face of disturbances to its function. Evidence for such mechanisms can be found in the time-course of the recovery of CAP thresholds during experimental manipulations, and in observations of slow oscillations in cochlear micromechanics following exposure to low-frequency tones (the “bounce phenomenon”) and other perturbations. To increase our understanding of these oscillatory processes within the cochlea, and OHCs in particular, investigations into cochlear regulatio

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7

Jones, Karen Elizabeth. "High frequency acoustic reflexes in cochlea-impaired and normal ears." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/4096.

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The acoustic reflex refers to the contraction of a middle ear muscle in response to sound. The contraction causes a stiffening of the middle ear system and, consequently, the flow of acoustic energy to the cochlea is impeded. By measuring the change in admittance in the auditory system during sound stimulation it is possible to indirectly monitor the middle ear muscle contractions. Such measurements provide useful information regarding the integrity of the auditory system and the location of the auditory pathology.

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8

Seluakumaran, Kumar. "Descending control of responses in the auditory midbrain." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0152.

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[Truncated abstract] The mammalian inner ear is innervated by the efferent olivocochlear system which is divided into medial and lateral systems. In anaesthetised animals, medial olivocochlear (MOC) axons can be electrically stimulated at the floor of the IVth ventricle. MOC stimulation suppresses the spontaneous activity and sound-evoked responses of primary afferents by its actions on outer hair cells. Effects of MOC stimulation have been also reported on responses of neurons in the cochlear nucleus, the first central auditory center receiving cochlear input. However, very little is known ab

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9

Apthorp, Harriet Rose. "An Investigation into the Site of Iatrogenic Auditory Impairment in Vestibular Schwannoma Surgery: A Pilot Study." Thesis, University of Canterbury. Department of Communication Disorders, 2015. http://hdl.handle.net/10092/10812.

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During vestibular schwannoma surgery a large proportion of patients will lose their hearing. While there have been several papers investigating the mechanism behind this loss of auditory function, the exact pathophysiological mechanisms remain relatively elusive. The present study aimed to document the patterns of electrophysiological auditory responses during retrosigmoid vestibular schwannoma surgery. In particular, we aimed to determine whether the site of auditory impairment in individual cases was predominantly cochlea or neural. Auditory function was monitored intraoperatively in two

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10

MONTUORO, GINA MARIA. "EVALUATING THE AREA UNDER THE SP/AP COMPLEX IN ELECTROCOHLEOGRAPHY FOR THE DIAGNOSIS OF MENIERE'S DISEASE." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin990639948.

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11

Hornby, Rene. "A multiple test battery approach during the assessment of the auditory nervous system of patients with multiple sclerosis." Pretoria : [s.n.], 2002. http://upetd.up.ac.za/thesis/available/etd-07222005-155411.

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12

Barker, Brittan Ann. "An examination of the effect of talker familiarity on the sentence recognition skills of cochlear implant users." Diss., University of Iowa, 2006. http://ir.uiowa.edu/etd/51.

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13

Gerenton, Grégory. "Mesures non invasives de l'activité electrophysiologique des cellules sensorielles et des neurones auditifs. Applications au diagnostic de pathologies de l'oreille interne." Thesis, Clermont-Ferrand 1, 2015. http://www.theses.fr/2015CLF1MM17/document.

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Grâce à la miniaturisation de la technologie ainsi qu'a l'augmentation constante des capacités de calcul numérique, les méthodes objectives et les appareils de mesures de la physiologie auditive évoluent. C'est dans l'optique de créer de nouveaux outils diagnostics que la société Echodia a été créée en 2009. Celle-ci finance aujourd'hui mes recherches sous convention CIFRE.Les présents travaux proposent, dans une première partie, de présenter comment deux méthodes de mesures non invasives ont été mises en oeuvre pour être applicables au diagnostic de l'hydrops cochléaire. Les méthodes sont bas

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14

Brown, Daniel. "Origins and use of the stochastic and sound-evoked extracellular activity of the auditory nerve." University of Western Australia. Dept. of Physiology, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0082.

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[Truncated abstract] The present study investigated whether any of the characteristics of the compound action potential (CAP) waveform or the spectrum of the neural noise (SNN) recorded from the cochlea, could be used to examine abnormal spike generation in the type I primary afferent neurones, possibly due to pathologies leading to abnormal hearing such as tinnitus or tone decay. It was initially hypothesised that the CAP waveform and SNN contained components produced by the local action currents generated at the peripheral ends of the type I primary afferent neurones, and that changes in the

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15

Giles, Charlotte. "A Demographic and Electrocochleographic Study of Ménière's Disease and Migraine Vertigo." Thesis, University of Canterbury. Communication Disorders, 2012. http://hdl.handle.net/10092/6928.

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Ménière’s disease (MD) is an inner ear condition characterised by progressive hearing loss, tinnitus, aural fullness, and vertigo. Migraine is a common, chronic neurovascular disorder characterised by attacks of severe headaches, autonomic nervous system dysfunction, and, in some patients, visual disturbances. Patients with certain subclasses of migraine may also present with symptoms typically experienced by MD sufferers, such as vertigo, hearing loss, and tinnitus. Currently most MD cases are diagnosed through subjective criteria such as the guidelines provided by the American Academy of

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16

Shinohara, Shogo. "Electrocochleographic documentation of temporal findings of speech perception in normal and hearing-impairedind ividuals." Kyoto University, 2000. http://hdl.handle.net/2433/151443.

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17

(10276490), Caitlin R. Heffner. "Electrocochleography Measures from the Ear Canal of Awake Chinchillas." Thesis, 2021.

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<p>Disabling hearing loss is a problem around the world, with the World Health Organization estimating that 466 million people worldwide have disabling loss, and that this number is expected to increase to over 900 million people by 2050. There are different types of hearing loss, but sensorineural hearing loss (SNHL) is the most common and results from damage to the inner ear. The audiogram is the most common test used to diagnose hearing loss, but it is limited in that it can only identify a shift in hearing sensitivity (thresholds), i.e., it cannot identify the cochlear location causing SNH

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18

Bowker, Caren Anne. "The effects of high repetition rate stimuli on electrocochleography performed on normal hearing subjects." Thesis, 2016. http://hdl.handle.net/10539/20892.

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THE DEPARTMENT OF SPEECH PATHOLOGY AND AUDIOLOGY. FACULTY OF ARTS, UNIVERSITY OF THE WITWATERSRAND, JOHANNESBURG In partial fulfillment of the requirements for the degree of Master of Arts by coursework in Audiology June 1999<br>High stimulus repetition rates have been proposed as a solution to the poor sensitivity and specificity of the standard electrocochleogram. The use of this approach has been confounded, however, by conflicting literature reports on the effects of high stimulus repetition rates on normal subjects. This study aimed to confirm the effects of high stimulus repetit

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19

"Design and evaluation of tone-enhanced strategy for cochlear implants in noisy environment." 2011. http://library.cuhk.edu.hk/record=b5894510.

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Yu, Shing.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2011.<br>Includes bibliographical references (leaves 87-93).<br>Abstracts in English and Chinese; includes Chinese.<br>Abstract --- p.i<br>Acknowledgement --- p.vi<br>Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Hearing impairment --- p.1<br>Chapter 1.2 --- Limitations of existing CI --- p.2<br>Chapter 1.3 --- Objectives --- p.3<br>Chapter 1.4 --- Thesis Outline --- p.4<br>Chapter 2 --- Background --- p.6<br>Chapter 2.1 --- Signal Processing in CI --- p.6<br>Chapter 2.1.1 --- Continuous Interleaved Sampler (CIS)

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20

Hornby, Rene. "A multiple test battery approach during the assessment of the auditory nervous system of patients with multiple sclerosis." Diss., 2003. http://hdl.handle.net/2263/26535.

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Audiologists are challenged with various neurological diseases, such as Multiple Sclerosis. This disease causes demyelination of the white matter in the central nervous system resulting in desynchronisation of neural impulses. Despite controversy in the literature many studies illustrated some degree of auditory involvement associated with this disease. The auditory brainstem response has dominated the field during the assessment of the auditory system of patients with Multiple Sclerosis. Although this objective test procedure is useful during the assessment of the auditory nerve on a brainste

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