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Deficience auditive cochleaire
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An introduction to the physiology of hearing / James O. Pickles (2013)
Titre : An introduction to the physiology of hearing Type de document : Livre Auteurs : James O. Pickles Mention d'édition : 4e éd. Editeur : Leiden : Brill Année de publication : 2013 Importance : 450 p. Format : 24 cm ISBN/ISSN/EAN : 978-90-04-24377-4 Prix : 75,00 Langues : Anglais (eng) Descripteurs : HE Vinci
Cochlée ; Cortex auditif ; Nerf vestibulocochléaire ; Physiologie de l'audition ; Potentiels évoqués auditifs du tronc cérébral (ABR) ; Son (acoustique)
Deficience auditive cochleaire ; Psychophysiologie de l'audition
Résumé : This book deals with the way that the auditory system processes acoustic signals. The current edition has been thoroughly revised to reflect the progress that has been made since the previous edition. Particularly major updates have been made in the following areas: cochlear function, including cochlear mechanics, hair cell function and mechanisms of transduction; the auditory central nervous system, a major area of advance in recent years; physiological correlates of auditory perception, including speech perception; and, cochlear pathophysiology and sensorineural hearing loss, including the restoration of hearing by electrical stimulation of the ear, and molecular and cellular approaches to hair cell repair, replacement, and regeneration.A reading scheme has been provided to guide readers to the section most appropriate for their interests. The book is written so that those entering auditory research from very little background in auditory neuroscience are able to understand the current research issues and research literature. It is also intended to be a source book and reference work for advanced undergraduates studying the special senses, and for clinicians in the speciality of Otorhinolaryngology.It offers a contemporary look at the physiology of hearing: each chapter has been thoroughly revised. It is an excellent reading companion to practitioners and scholars. It is also suitable for those undertaking auditory research. It includes a reading scheme to guide readers through the book. Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=204237
Cote Support Localisation Section Disponibilité L_61_2036 A Livre Ixelles Mezzanine Prêt autorisé
DisponibleCochlear hearing loss / Brian C. J. Moore (2000)
Titre : Cochlear hearing loss Type de document : Livre Auteurs : Brian C. J. Moore Editeur : London, Philadelphia : Whurr publishers Année de publication : 2000 Importance : VIII, 220 p. Présentation : ill Format : 24 cm ISBN/ISSN/EAN : 978-1-86156-091-9 Prix : 42.87 Langues : Anglais (eng) Descripteurs : HE Vinci
Audiométrie ; Implants cochléaires ; Pathologie cochléaire
Deficience auditive cochleaire ; Physiologie cochleaire ; Trouble cochleaire
Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=202850
Cote Support Localisation Section Disponibilité L_61_6031 Livre Ixelles Mezzanine Prêt autorisé
DisponibleSexual Dimorphism in the Functional Development of the Cochlear Amplifier in Humans / Srikanta K. Mishra in Ear and hearing, Vol. 42, n°4 (Juillet- Aout 2021)
Titre : Sexual Dimorphism in the Functional Development of the Cochlear Amplifier in Humans Type de document : Article Auteurs : Srikanta K. Mishra ; Samantha Zambrano ; Hansapani Rodrigo, Auteur Année de publication : 2021 Article en page(s) : p. 860-869 Langues : Anglais (eng) Descripteurs : Autres descripteurs
Deficience auditive cochleaire
Différence homme femme ; Emissions otoacoustiques évoquées (OEA)(OAE) ; HAUTEUR TONALE
Résumé : Objectives: Otoacoustic emissions, a byproduct of active cochlear mechanisms, exhibit a higher magnitude in females than in males. The relatively higher levels of androgen exposure in the male fetus are thought to cause this difference. Postnatally, the onset of puberty is also associated with the androgen surge in males. In this study, we investigated sexual dimorphism in age-related changes in stimulus-frequency otoacoustic emissions for children.
Design: In a retrospective design, stimulus-frequency otoacoustic emissions were analyzed from a cross-sectional sample of 170 normal-hearing children (4 to 12 years) and 67 young adults. Wideband acoustic immittance and efferent inhibition measures were analyzed to determine the extent to which middle ear transmission and efferent inhibition can account for potential sex differences in stimulus-frequency otoacoustic emissions.
Results: Male children showed a significant reduction in otoacoustic emission magnitudes with age, whereas female children did not show any such changes. Females showed higher stimulus-frequency otoacoustic emission magnitudes compared with males. However, the effect size of sex differences in young adults was larger compared with children. Unlike the otoacoustic emission magnitude, the noise floor did not show sexual dimorphism; however, it decreased with age. Neither the wideband absorbance nor efferent inhibition could account for the sex differences in stimulus-frequency otoacoustic emissions.
Conclusions: The cochlear-amplifier function remains robust in female children but diminishes in male children between 4 and 12 years of age. We carefully eliminated lifestyle, middle ear, and efferent factors to conclude that the androgen surge associated with puberty likely caused the observed masculinization of stimulus-frequency otoacoustic emissions in male children. These findings have significant theoretical consequences. The cochlea is considered mature at birth; however, the present findings highlight that functional cochlear maturation, as revealed by otoacoustic emissions, can be postnatally influenced by endogenous hormonal factors, at least in male children. Overall, work reported here demonstrates sexual dimorphism in the functional cochlear maturational processes during childhood.
DOI : 10.1097/AUD.0000000000000976|1 Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://ovidsp.ovid.com/ovidweb.cgi?T=J [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=288415
in Ear and hearing > Vol. 42, n°4 (Juillet- Aout 2021) . - p. 860-869[article]The Effect of Interphase Gap on Neural Response of the Electrically Stimulated Cochlear Nerve in Children With Cochlear Nerve Deficiency and Children With Normal-Sized Cochlear Nerves / Shuman He in Ear and hearing, Vol. 41, n°4 (Juillet-aout 2020)
Titre : The Effect of Interphase Gap on Neural Response of the Electrically Stimulated Cochlear Nerve in Children With Cochlear Nerve Deficiency and Children With Normal-Sized Cochlear Nerves Type de document : Article Auteurs : Shuman He ; Lei Xu ; Jeffrey Skidmore ; Fuh-Cherng Jeng ; [et al.] Année de publication : 2020 Article en page(s) : p. 918-934 Langues : Anglais (eng) Descripteurs : Autres descripteurs
Deficience auditive cochleaire
Mots-clés : Electrically evoked auditory compound action potentials, Interphase gap, Neural survival Résumé : Objectives: This study aimed to compare the effects of increasing the interphase gap (IPG) on the neural response of the electrically stimulated cochlear nerve (CN) between children with CN deficiency (CND) and children with normal-sized CNs.
Design: Study participants included 30 children with CND and 30 children with normal-sized CNs. All subjects were implanted with a Cochlear Nucleus device with the internal electrode array 24RE[CA] in the test ear. The stimulus was a charge-balanced, cathodic leading, biphasic pulse with a pulse-phase duration of 50 [mu]sec. For each subject, the electrically evoked compound action potential (eCAP) input/output (I/O) function was measured for 6 IPGs (i.e., 7, 14, 21, 28, 35, and 42 [mu]sec) at 3 electrode locations across the electrode array. For each subject and each testing electrode, the highest stimulation used to measure the eCAP I/O function was the maximum comfortable level measured with an IPG of 42 [mu]sec. Dependent variables (DVs) were the maximum eCAP amplitude, the eCAP threshold, and the slope of the eCAP I/O function estimated using both linear and sigmoidal regression functions. For each DV, the size of the IPG effect was defined as the proportional change relative to the result measured for the 7 [mu]sec IPG at the basal electrode location. Generalized linear mixed effect models with subject group, electrode location, and IPG duration as the fixed effects and subject as the random effect were used to compare these DVs and the size of the IPG effect on these DVs.
Results: Children with CND showed smaller maximum eCAP amplitudes, higher eCAP thresholds, and smaller slopes of eCAP I/O function estimated using either linear or sigmoidal regression function than children with normal-sized CNs. Increasing the IPG duration resulted in larger maximum eCAP amplitudes, lower eCAP thresholds and larger slopes of eCAP I/O function estimated using sigmoidal regression function at all three electrode locations in both study groups. Compared with children with normal-sized CNs, children with CND showed larger IPG effects on both the maximum eCAP amplitude and the slope of the eCAP I/O function estimated using either linear or sigmoidal regression function, and a smaller IPG effect on the eCAP threshold than those measured in children with normal-sized CNs.
Conclusions: Increasing the IPG increases responsiveness of the electrically stimulated CN in both children with CND and children with normal-sized CNs. The maximum eCAP amplitude and the slope of the eCAP I/O function measured in human listeners with poorer CN survival are more sensitive to changes in the IPG. In contrast, the eCAP threshold in listeners with poorer CN survival is less sensitive to increases in the IPG. Further studies are warranted to identify the best parameters of eCAP results for predicting CN survival before this eCAP testing paradigm can be used as a clinical tool for evaluating neural health for individual cochlear implant patients.
DOI : 10.1097/AUD.0000000000000815|1 Disponible en ligne : Non En ligne : https://login.ezproxy.vinci.be/login?url= Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=256790
in Ear and hearing > Vol. 41, n°4 (Juillet-aout 2020) . - p. 918-934[article]Use of custom-moulded earmoulds to improve repeatability of DPOAE map measurements / Fiona B. McEnany ; Jesse A. Norris ; Abigail M Fellows ; Odile Clavier ; Deanna K. Meinke ; Catherine C. Rieke ; Robert Kline-Schoder ; Jay C. Buckey in International Journal of Audiology IJA, Vol. 60, n°7 (Juillet 2021)
Titre : Use of custom-moulded earmoulds to improve repeatability of DPOAE map measurements Type de document : Article Auteurs : Fiona B. McEnany ; Jesse A. Norris ; Abigail M Fellows ; Odile Clavier ; Deanna K. Meinke ; Catherine C. Rieke ; Robert Kline-Schoder ; Jay C. Buckey Année de publication : 2021 Article en page(s) : p. 555-560 Langues : Anglais (eng) Descripteurs : HE Vinci
Ecouteur (audiologie) ; Emissions otoacoustiques spontanées (OAEs) ; Ototoxicité
Deficience auditive cochleaire
Résumé : Objective
Distortion product otoacoustic emission (DPOAE) mapping characterises cochlear function, can include both the 2f1-2f2 and 2f2-2f1 DPOAEs, and shows promise for tracking cochlear changes. DPOAE amplitude measurements are not as repeatable longitudinally as pure-tone audiometry, likely due in part to probe placement sensitivity. We hypothesised that DPOAE level map variation over multiple testing sessions could be minimised by replacing traditional rubber tips with custom-moulded probe tips.
Traditional rubber tips (TRT) and custom-moulded probes tips (CMPT) were used to measure DPOAE level maps repeatedly over five sessions. Probe placement was assessed using a frequency sweep in the ear canal. Repeatability of the DPOAE level maps was assessed using a Bland-Altman analysis. Overall map repeatability was assessed by measuring differences in distortion product amplitude over sessions.
Crossover study with a convenience sample size of six adults.
The CMPT frequency sweeps showed reduced variability in probe placement. The repeatability coefficient for individual DPOAEs measurements improved from 6.9 dB SPL with the TRT to 5.1 dB SPL with the CMPT. Map repeatability improved for most subjects with the CMPT.
DOI : https://doi.org/10.1080/14992027.2020.1828632|1 Accès : Contactez la bibliothèque d'Ixelles si le lien vers la ressource électronique ne fonctionne plus Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://www.tandfonline.com/doi/full/10 [...] Format de la ressource électronique : Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=272541
in International Journal of Audiology IJA > Vol. 60, n°7 (Juillet 2021) . - p. 555-560[article]