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Journal articles on the topic 'Cochlear implant'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Mutalipova, G. A., D. N. Asretov, D. A. Temirova, et al. "Cochlear models used in cochlear implant research." CARDIOMETRY, no. 32 (August 25, 2024): 13–20. http://dx.doi.org/10.18137/cardiometry.2024.32.1320.

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Over the past few decades, cochlear implants have undergone significant changes due to intensive research through experimental and computational analysis. However, obtaining an accurate and reliable cochlear model remains an open issue. Invasive measurements on the human ear are hardly possible, and the only alternative is animal models, but even this is not an ideal option, as animal cochleae are anatomically significantly different from the human cochleae. In this context, an ear model based on the latest knowledge of the physiology and molecular principles of hearing will allow the study of

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Maurer, Jan, Nicolaos Marangos, and E. Ziegler. "Reliability of cochlear implants." Otolaryngology–Head and Neck Surgery 132, no. 5 (2005): 746–50. http://dx.doi.org/10.1016/j.otohns.2005.01.026.

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BACKGROUND: The long-term reliability of cochlear implants over time is an important issue for patients and cochlear implant teams. The calculation of cumulative survival rates including all hard failures of cochlear implants is suitable to report objectively about cochlear implant reliability. METHODS: This is a report of 192 cochlear implants from different manufacturers in adults (n = 58) and children (n = 134). RESULTS: The overall cumulative implant survival rate was 91.7% for a period of 11 years. The main reasons for hard failures were design errors of the products and direct or indirec

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3

Islam, Rumana, and Mohammed Tarique. "Investigating the Performance of Gammatone Filters and Their Applicability to Design Cochlear Implant Processing System." Designs 8, no. 1 (2024): 16. http://dx.doi.org/10.3390/designs8010016.

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Commercially available cochlear implants are designed to aid profoundly deaf people in understanding speech and environmental sounds. A typical cochlear implant uses a bank of bandpass filters to decompose an audio signal into a set of dynamic signals. These filters’ critical center frequencies imitate the human cochlea’s vibration patterns caused by audio signals. Gammatone filters (GTFs), with two unique characteristics: (a) an appropriate “pseudo resonant” frequency transfer function, mimicking the human cochlea, and (b) realizing efficient hardware implementation, could demonstrate them as

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Toulemonde, Philippine, Michaël Risoud, Pierre Emmanuel Lemesre, et al. "Evaluation of the Efficacy of Dexamethasone-Eluting Electrode Array on the Post-Implant Cochlear Fibrotic Reaction by Three-Dimensional Immunofluorescence Analysis in Mongolian Gerbil Cochlea." Journal of Clinical Medicine 10, no. 15 (2021): 3315. http://dx.doi.org/10.3390/jcm10153315.

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Cochlear implant is the method of choice for the rehabilitation of severe to profound sensorineural hearing loss. The study of the tissue response to cochlear implantation and the prevention of post-cochlear-implant damages are areas of interest in hearing protection research. The objective was to assess the efficacy of dexamethasone-eluting electrode array on endo canal fibrosis formation by three-dimensional immunofluorescence analysis in implanted Mongolian gerbil cochlea. Two trials were conducted after surgery using Mongolian gerbil implanted with dexamethasone-eluting or non-eluting intr

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Ajieren, Hans, Radu Reit, Roxanne Lee, et al. "Robotic Insertion Aid for Self-Coiling Cochlear Implants." MRS Advances 1, no. 1 (2016): 51–56. http://dx.doi.org/10.1557/adv.2016.71.

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ABSTRACTThis study investigates the use of shape memory polymers (SMPs) as a substrate for a self-coiling cochlear implant electrode array and investigates the self-coiling ability of a sham probe micromachined atop such a substrate. Through the use of a self-coiling cochlear implant, the capability to avoid contact with the tissue of the cochlear duct is investigated via the insertion of a dummy device into a model cochlea heated to an ambient 34 °C. Finally, a prototype straightening and insertion tool is developed for automated retraction and locking of the coiled shape into a bar geometry.

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Pamuk, G., A. E. Pamuk, A. Akgöz, E. Öztürk, M. D. Bajin, and L. Sennaroğlu. "A study on modelling cochlear duct mid-scalar length based on high-resolution computed tomography, and its effect on peri-modiolar and mid-scalar implant selection." Journal of Laryngology & Otology 133, no. 09 (2019): 764–69. http://dx.doi.org/10.1017/s0022215119001671.

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AbstractObjectiveTo determine cochlear duct mid-scalar length in normal cochleae and its role in selecting the correct peri-modiolar and mid-scalar implant length.MethodsThe study included 40 patients with chronic otitis media who underwent high-resolution computed tomography of the temporal bone. The length and height of the basal turn, mid-modiolar height of the cochlea, mid-scalar and lateral wall length of the cochlear duct, and the ‘X’ line (the largest distance from mid-point of the round window to the mid-scalar point of the cochlear canal) were measured.ResultsCochlear duct lateral wal

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Jackler, Robert K., Patricia A. Leake, and William S. McKerrow. "Cochlear Implant Revision: Effects of Reimplantation on the Cochlea." Annals of Otology, Rhinology & Laryngology 98, no. 10 (1989): 813–20. http://dx.doi.org/10.1177/000348948909801012.

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The removal of an indwelling cochlear implant electrode followed by reinsertion of a new device has been a maneuver of uncertain cosequences to the cochlea and its surviving neural population. The present study was conducted in an attempt to elucidate the factors at determine whether a reimplantation procedure will be successful. Cochlear implantation followed by explanation and subsequent implantation was performed in eight adult cats. Evaluation of cochlear histopathology suggested a significant increase in electrode insertion trauma when there was proliferation of granulation tissue in the

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Todt, I., R. Guerkov, H. B. Gehl, and H. Sudhoff. "Comparison of Cochlear Implant Magnets and Their MRI Artifact Size." BioMed Research International 2020 (January 10, 2020): 1–8. http://dx.doi.org/10.1155/2020/5086291.

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Introduction. Recent developments regarding cochlear implant magnets (e.g., a bipolar diametral magnet) and refined surgical techniques (e.g., implant positioning) have had a significant impact on the relation between cochlear implants and MRIs, making the reproducible visibility of cochlea and IAC possible. MRI scanning has changed from a contraindication to a diagnostic tool. Magnet artifact size plays a central role in the visual assessment of the cochlea and IAC. Objective. The aim of this study is to compare the CI magnet-related maximum artifact sizes of various cochlea implant systems.

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Swain, Santosh Kumar. "Cochlear deformities and its implication in cochlear implantation: a review." International Journal of Research in Medical Sciences 10, no. 10 (2022): 2339. http://dx.doi.org/10.18203/2320-6012.ijrms20222547.

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Hearing loss is one of the world’s leading causes of chronic health conditions. Cochlea plays a vital role in the hearing mechanisms and it converts sound energy into electrical stimuli which are transmitted to the brain through the neural pathway. The human cochlea is difficult to explore because of its vulnerability and bordering bony capsule. Congenital malformation of the inner ear or cochlea is an important cause of congenital sensorineural hearing loss. The deformity of the cochlea may result from arrested development of cochlea at different stages of fetal life or from abnormal developm

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AKKAPLAN, Selvet, Merve ÖZBAL BATUK, Hilal DİNÇER D’ALESSANDRO, and Gonca SENNAROĞLU. "İnkomplet partisyon tip II bulunan unilateral ve bimodal koklear implant kullanıcılarının konuşma, uzaysal algı ve işitme kalitesinin değerlendirilmesi." Turkish Journal of Audiology And Hearing Research 4, no. 3 (2021): 63–68. http://dx.doi.org/10.34034/tjahr.977893.

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Evaluation of the speech, spatial and qualities of hearing in unilateral and bimodal cochlear implant users with incomplete partition type II Objective: The aim of this study was to perform a scale-based assessment of the hearing abilities of cochlear implant users with IP type II malformation and normal cochlea, including discrimination, orientation, and positioning of speech and environmental sounds in their environment. Material and Methods: A total of 30 cochlear implant users, 15 participants with IP-II inner ear anomalies and 15 participants with normal cochlea, aged 18-55 years were inc

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Swain, Santosh Kumar. "Intracochlear electrode insertion of cochlear implant: a scoping review." International Journal of Otorhinolaryngology and Head and Neck Surgery 11, no. 3 (2025): 335–41. https://doi.org/10.18203/issn.2454-5929.ijohns20251527.

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Cochlear implant currently shows remarkable speech understanding performance despite use of non-optimized coding strategies for transmission of tonal information. Certain features of cochlear implant electrode arrays enable the preservation of intracochlear structures when the devices are inserted into the scala tympani. The standard location for insertion of electrode of cochlear implant is into the scala tympani. The failure of insertion of the electrode into scala tympani has been seen in clinical practice. Minimal or no insertion trauma, deep insertion to the apex of the scala tympani is p

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Langman, Alan W., and Suzanne M. Quigley. "Accuracy of High-Resolution Computed Tomography in Cochlear Implantation." Otolaryngology–Head and Neck Surgery 114, no. 1 (1996): 38–43. http://dx.doi.org/10.1016/s0194-59989670281-4.

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Multichannel cochlear implants are a proven method for the auditory rehabilitation of individuals who have severe-to-profound sensorineural hearing loss. These devices typically require insertion into the scala tympani of the cochlea to provide auditory stimulations. A patent scala provides the best chance for an adequate insertion of the electrode array. Preoperative high-resolution computed tomography imaging has traditionally been used to determine the patency of the scala tympani. Its ability to accurately predict the patency of the cochlea has been questioned in several retrospective stud

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Zahara, Devira, Rima Diana Dewi, Askaroellah Aboet, Fikri Mirza Putranto, Netty Delvrita Lubis, and Taufik Ashar. "Variations in Cochlear Size of Cochlear Implant Candidates." International Archives of Otorhinolaryngology 23, no. 02 (2018): 184–90. http://dx.doi.org/10.1055/s-0038-1661360.

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Introduction The cochlear anatomy varies in each individual, and that has an impact on decisions regarding the insertion of electrodes. The measurement of the cochlear size is the routine examination required to choose the proper cochlear implant (CI) electrodes. Objective To acquire normative data on the size of the cochlea (length, width, height, scala timpani [ST] height, cochlear duct length [CDL]) of CI candidates in Medan, Indonesia. Methods This descriptive study was conducted based on high-resolution computed tomography (HRCT) temporal bone data and on HRCT temporal data manipulated to

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Swain, Santosh Kumar. "Vertigo following cochlear implantation: a review." International Journal of Research in Medical Sciences 10, no. 2 (2022): 572. http://dx.doi.org/10.18203/2320-6012.ijrms20220310.

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Cochlear implantation may cause a detrimental effect on vestibular function and residual hearing. A significant number of patients with a cochlear implant present with vertigo. There are several mechanisms for dizziness following cochlear implantations. The causes may be surgical trauma, disruption of normal cochlear physiology, or ensuing endolymphatic hydrops. Vibratory trauma affecting the cochlea during cochleostomy plays a vital role in causing paroxysmal vertigo in patients with a cochlear implant. In addition, the vibrations affecting the cochlea are enough to dislodge otoconia particle

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Graham, John M., Peter D. Phelps, and Leslie Michaels. "Congenital malformations of the ear and cochlear implantation in children: review and temporal bone report of common cavity." Journal of Laryngology & Otology 114, S25 (2000): 1–14. http://dx.doi.org/10.1258/0022215001904842.

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The objective of this review is to analyze aspects of congenital malformation of the ear in relation to cochlear implantation in children. Having briefly described the in utero development of the ear and the classification of types of external, middle and inner ear malformation, five practical aspects of these malformations are discussed. It seems likely that the combination of bilateral profound sensorineural deafness with bilateral microtia severe enough to make a surgical approach to the cochlea difficult will be extremely uncommon. No such cases have been reported, although Klippel-Feil de

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Deep, Nicholas, Baishakhi Choudhury, and J. Roland. "Auditory Brainstem Implantation: An Overview." Journal of Neurological Surgery Part B: Skull Base 80, no. 02 (2019): 203–8. http://dx.doi.org/10.1055/s-0039-1679891.

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AbstractAn auditory brainstem implant (ABI) is a surgically implanted central neural auditory prosthesis for the treatment of profound sensorineural hearing loss in children and adults who are not cochlear implant candidates due to a lack of anatomically intact cochlear nerves or implantable cochleae. The device consists of a multielectrode surface array which is placed within the lateral recess of the fourth ventricle along the brainstem and directly stimulates the cochlear nucleus, thereby bypassing the peripheral auditory system. In the United States, candidacy criteria for ABI include deaf

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Swain, Santosh Kumar. "Current criteria for selecting cochlear implant in deaf patients: a review." International Journal of Advances in Medicine 9, no. 1 (2021): 50. http://dx.doi.org/10.18203/2349-3933.ijam20214881.

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Cochlear implantation is indicated in patients with severe to profound hearing loss that cannot be adequately treated by other auditory rehabilitation measures. The definitive indication of cochlear implantation is made on the basis of an extensive interdisciplinary clinical, audiological, radiological, and psychological diagnostic work-up. There are numerous changes are happening in cochlear implant candidacy. These have been associated with concomitant changes in surgical techniques, which enhanced the utility and safety of cochlear implantation. Currently, cochlear implants are approved for

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Graham, J., C. Lynch, B. Weber, L. Stollwerck, J. Wei, and G. Brookes. "The magnetless Clarion® cochlear implant in a patient with neurofibromatosis 2." Journal of Laryngology & Otology 113, no. 5 (1999): 458–63. http://dx.doi.org/10.1017/s0022215100144214.

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AbstractWe present our experience using the Clarion® magnetless multichannel cochlear implant with a woman profoundly deafened following bilateral acoustic neuromata as a consequence of neurofibromatosis 2 (NF2). The right neuroma had been previously removed without an attempt at neural preservation. On the left, however, a posterior fossa approach had been taken with the aim of preserving hearing. Although the left cochlear nerve appeared to be undamaged at the end of the operation, no hearing thresholds could be elicited on post-operative audiometry, because of damage either to the cochlear

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Neria, Christy M. "Where Are the Voices of Adolescents? An Examination of Adolescent Cochlear Implant Users' Socio-Emotional Development." Perspectives on School-Based Issues 10, no. 4 (2009): 123–26. http://dx.doi.org/10.1044/sbi10.4.123.

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Abstract The advancement of cochlear implant technology has led researchers to focus on its functionality, rather than the socio-emotional effects cochlear implants may have on young recipients. This paper will examine recent research on social-emotional development of cochlear implant recipients while discussing the importance of exploring the social emotional responses of adolescents with cochlear implants.

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Sampaio, André L. L., Mercêdes F. S. Araújo, and Carlos A. C. P. Oliveira. "New Criteria of Indication and Selection of Patients to Cochlear Implant." International Journal of Otolaryngology 2011 (2011): 1–13. http://dx.doi.org/10.1155/2011/573968.

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Numerous changes continue to occur in cochlear implant candidacy. In general, these have been accompanied by concomitant and satisfactory changes in surgical techniques. Together, this has advanced the utility and safety of cochlear implantation. Most devices are now approved for use in patients with severe to profound unilateral hearing loss rather then the prior requirement of a bilateral profound loss. Furthermore, studies have begun utilizing short electrode arrays for shallow insertion in patients with considerable low-frequency residual hearing. This technique will allow the recipient to

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Noda, T., Y. Kakazu, and S. Komune. "Cochlear implants for mumps deafness: two paediatric cases." Journal of Laryngology & Otology 129, S2 (2015): S38—S41. http://dx.doi.org/10.1017/s0022215114002369.

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AbstractBackground:Good outcomes have been reported regarding the use of cochlear implants for mumps deafness. The mumps virus induces meningitis and/or encephalitis, which can cause central nervous system damage resulting in retrolabyrinthine hearing loss, for which a cochlear implant would be less effective.Cases:We installed a cochlear implant in two patients with bilateral mumps deafness; one achieved a good result with the cochlear implant, but the other did not. We discuss two possible reasons for the different outcomes. Case 1 was a three-year-old girl with bilateral parotid swelling, v

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Khan, Aayesha M., Ophir Handzel, Donald K. Eddington, Doris Damian, and Joseph B. Nadol. "Effect of Cochlear Implantation on Residual Spiral Ganglion Cell Count as Determined by Comparison with the Contralateral Nonimplanted Inner Ear in Humans." Annals of Otology, Rhinology & Laryngology 114, no. 5 (2005): 381–85. http://dx.doi.org/10.1177/000348940511400508.

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It is generally assumed that at least a minimal number of spiral ganglion cells is essential for successful speech perception with a cochlear implant. Although the insertion of a multichannel cochlear implant frequently results in loss of residual hearing in the implanted ear, this outcome does not imply that significant damage to residual populations of spiral ganglion cells has occurred. The purpose of the current study was to compare spiral ganglion cell counts in implanted and nonimplanted cochleas in 11 patients for whom both temporal bones were available and in whom a multichannel cochle

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Tyler, Richard S., and Mary W. Lowder. "Audiological Management and Performance of Adult Cochlear-Implant Patients." Ear, Nose & Throat Journal 71, no. 3 (1992): 117–28. http://dx.doi.org/10.1177/014556139207100302.

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We review the signal-processing strategies of three of the most common cochlear implants in use today, the single-channel House, the multichannel Nucleus, and the Ineraid devices. The results of 65 postlinguistically-deafened patients tested at The University of Iowa are reviewed. The tests include everyday sound, accent, word and sentence recognition, as well as noise/voice differentiation. For all tests, patients with the Nucleus and Ineraid cochlear implants outperformed those with the House implant. In general, selection criteria should focus on comparing the performance of Patients who ha

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Melo, Juliana Jandre, Paula Carolina Dias Gibrin, and Luciana Lozza de Moraes Marchiori. "Vestibular dysfunction and postural balance in cochlear implant users: a narrative literature review." Revista CEFAC 20, no. 1 (2018): 101–9. http://dx.doi.org/10.1590/1982-021620182019016.

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ABSTRACT Cochlear implants directly stimulate nerve fibers and ganglion cells of the auditory nerve, which transform sound energy into low levels of electrical current, stimulating the remaining fibers of the auditory nerve in patients with severe to profound hearing loss, in order to provide the significant range of auditory sensation and speech comprehension. Due to the close relationship between cochlea and vestibular receptors, some patients may present vestibular and postural balance changes concomitantly after surgery. This study aimed to perform a narrative review of the main studies th

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Summers, K. F., N. R. Harn, L. N. Ledbetter, J. D. Leever, and J. R. Bertsch. "Imaging of Auditory Brain Stem Implants." Neurographics 10, no. 4 (2020): 202–10. http://dx.doi.org/10.3174/ng.1900050.

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Auditory brain stem implants are infrequently encountered neuroprosthetic devices used for auditory rehabilitation in deaf patients with pathology between the cochlea and cochlear nuclei who would not benefit from cochlear implantation. This article reviews the device, the relevant anatomy, audiologic performance, operative approaches, and conditions in which auditory brain stem implants are indicated. The imaging appearance of auditory brain stem implants, including optimal lead positioning, and imaging safety considerations of the device are also discussed. Knowledge of the device can assist

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Balkany, Thomas, Bruce Gantz, and Joseph B. Nadol. "Multichannel Cochlear Implants in Partially Ossified Cochleas." Annals of Otology, Rhinology & Laryngology 97, no. 5_suppl2 (1988): 3–7. http://dx.doi.org/10.1177/00034894880975s201.

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Deposition of bone within the fluid spaces of the cochlea is encountered commonly in cochlear implant candidates and previously has been considered a relative contraindication to the use of multichannel intracochlear electrodes. This contraindication has been based on possible mechanical difficulty with electrode insertion as well as uncertainty about the potential benefit of the multichannel device in the patient. Fifteen profoundly deaf patients with partial ossification of the basal turn of the cochlea received implants with long intracochlear electrodes (11, Nucleus; 1, University of Calif

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Mawman, D. J., J. D. Edwards, E. C. Giles, et al. "An audit of the cochlear implant service in Manchester." Journal of Laryngology & Otology 110, no. 11 (1996): 1046–54. http://dx.doi.org/10.1017/s0022215100135728.

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AbstractThe adult cochlear implant programme in Manchester was established in 1988 and the evaluation of the cochlear implant service involved the first 58 implants users (mean age = 51.65 years, range 19–75 years). Questionnaires were sent to implant users and their partners to evaluate the service with regard to provision of information, clinical care during in-patient assessments, waiting times, operation for cochlear implant and postoperative rehabilitation. The results show that the majority of patients (78 per cent) felt that the implant gave them as much or more benefit than expected. A

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Swain, Santosh Kumar. "Hybrid cochlear implant:a scoping review." International Journal of Otorhinolaryngology and Head and Neck Surgery 11, no. 1 (2025): 95–100. https://doi.org/10.18203/issn.2454-5929.ijohns20250127.

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Cochlear implants (CIs) restore the perception of sound for individuals with severe to profound hearing loss by employing electrical stimulation to directly activate the remaining auditory neurons. Post-implantation ipsilateral hearing loss has been observed in every patient series involving hearing preservation cochlear implantation. Patients with residual hearing in the low-pitched area of the cochlea but severe to profound hearing loss in the middle and high-frequency range can be inserted with a shorter electrode array which preserves the residual hearing. The Hybrid CI, also referred to a

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Sudianto Utama, Muhammad Arif, and Artono Artono. "TIGA KASUS IMPLAN KOKLEA PADA DISPLASIA MONDINI." Jurnal Ilmiah Kedokteran Wijaya Kusuma 8, no. 2 (2019): 59–74. http://dx.doi.org/10.30742/jikw.v8i2.573.

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Mondini dysplasia is a kind of cochlear malformation caused by a failure growth of cochlea in the seventh week of pregnancy, results in cochlear turn which only reaches 1,5 turn until less than 2,5 turn. There is sensorineural hearing loss in Mondini dysplasia caused by anatomical malformation. The diagnosis of Mondini dysplasia is made by accurate anamnesis, audiology assessments and imaging results. This case study explains the importance of the holistic process of diagnosis and treatment of Mondini's dysplasia. Purpose: To explain that Mondini dysplasia should be diagnosed immediately and g

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Levin, S. V., A. S. Lilenko, E. A. Levina, et al. "Tonotopic fitting of the sound processor cochlear implant in normal cochlea anatomy." Meditsinskiy sovet = Medical Council, no. 7 (May 8, 2023): 124–31. http://dx.doi.org/10.21518/ms2023-125.

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Introduction. Cochlear implantation is very effective due to the known tonotopic organization of the cochlea. These data are used in the distribution of signals along the channels of the cochlear implant electrode. The more accurate and natural the stimulation of the auditory nerve fibers, the better the perception of speech, sounds and speech intelligibility.The aim of the study was to compare the clinical and anatomical settings of the cochlear implant processor.Materials and methods. The study included 63 patients aged 2 to 60 years using cochlear implantation system, implants with a standa

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Sismono, Fergio, Lucia Mancini, Marc Leblans, et al. "Synchrotron radiation X-ray microtomography for the visualization of intra-cochlear anatomy in human temporal bones implanted with a perimodiolar cochlear implant electrode array." Journal of Synchrotron Radiation 28, no. 1 (2021): 327–32. http://dx.doi.org/10.1107/s1600577520014952.

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Recently, synchrotron radiation computed microtomography (SRµCT) has emerged as a promising tool for non-destructive, in situ visualization of cochlear implant electrode arrays inserted into a human cochlea. Histological techniques have been the `gold standard' technique for accurate localization of cochlear implant electrodes but are suboptimal for precise three-dimensional measurements. Here, an SRµCT experimental setup is proposed that offers the benefit of a high spatial and contrast resolution (isotropic voxel size = 4.95 µm and propagation-based phase-contrast imaging), while visualizing

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Swain, Santosh Kumar. "Cochlear implant and tinnitus: a review." International Journal of Otorhinolaryngology and Head and Neck Surgery 7, no. 12 (2021): 1960. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20214698.

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<p>Tinnitus is the perception of a sound without any external auditory input and patient experiences as a ringing or buzzing sound in the ear or head. Tinnitus is a common and troublesome clinical entity that has existed for centuries. However, the exact etiology for tinnitus is not known. Electrical suppression of the tinnitus by cochlear implant is a secondary benefit to many cochlear implant recipients. Cochlear implants are often helpful to improve speech perception for those suffered with severe to profound hearing loss where hearing aids are no longer beneficial. There is high prev

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Phelps, P. D. "Cochlear implants for congenital deformities." Journal of Laryngology & Otology 106, no. 11 (1992): 967–70. http://dx.doi.org/10.1017/s0022215100121486.

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AbstractThere have been few accounts of multi-channel cochlear implants in patients with congenital structural deformities of the inner ear which are associated with severe and sometimes progressive deafness. These malformations can now be recognized easily on 2 plane thin section high resolution CT studies which are mandatory for the pre-implantation assessment. However, no attempt seems to have been made to describe which of these malformations would be suitable for an implant or for which would this procedure be contra-indicated. True Mondini deformity of both the cochlea and dilated vestib

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Wohlbauer, Dietmar M., Charles Hem, Caylin McCallick, Faten Awwad, and Julie G. Arenberg. "Out-of-focus: Fuzzy cochlear implant stimulation and how to avoid it." Journal of the Acoustical Society of America 156, no. 4_Supplement (2024): A73. https://doi.org/10.1121/10.0035158.

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Cochlear Implants restore hearing in severe-to-profound hearing-impaired individuals. An array of electrodes placed in the inner ear serves as the interface to elicit sound perception via electrically presented pulses. Cochlear implant performance is reduced by channel interaction, which degrades the signal accuracy at the electrode-neuron interface. We developed and optimized a focused cochlear implant stimulation strategy that counteracts the fuzzy electric representation by reducing channel interaction thereby getting the signal back into focus. The proposed strategy combines two approaches

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Venail, Frederic, Thibault Mura, Mohamed Akkari, et al. "Modeling of Auditory Neuron Response Thresholds with Cochlear Implants." BioMed Research International 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/394687.

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The quality of the prosthetic-neural interface is a critical point for cochlear implant efficiency. It depends not only on technical and anatomical factors such as electrode position into the cochlea (depth and scalar placement), electrode impedance, and distance between the electrode and the stimulated auditory neurons, but also on the number of functional auditory neurons. The efficiency of electrical stimulation can be assessed by the measurement of e-CAP in cochlear implant users. In the present study, we modeled the activation of auditory neurons in cochlear implant recipients (nucleus de

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Davidson, Lisa S. "Comparing Speech Perception of Children With Cochlear Implants or Hearing Aids." Perspectives on Hearing and Hearing Disorders in Childhood 20, no. 2 (2010): 70–75. http://dx.doi.org/10.1044/hhdc20.2.70.

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Cochlear implant (CI) candidacy guidelines continue to evolve as a result of advances in both cochlear implant and hearing aid technology. Empirical studies comparing the speech perception abilities of children using cochlear implants or hearing aids will be reviewed in the context of current device technology and CI candidacy evaluations.

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Kuzovkov, V. E., A. S. Lilenko, S. B. Sugarova, et al. "Etiological factors of facial nerve stimulation in cochlear implant users." Meditsinskiy sovet = Medical Council, no. 20 (November 20, 2022): 170–76. http://dx.doi.org/10.21518/2079-701x-2022-16-20-170-176.

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Cochlear implantation is a high-tech method of rehabilitation of persons with complete deafness. However, cochlear implantation in patients may be accompanied by a number of difficulties due to the peculiarities of the structure of the cochlea, the relative position of anatomical structures relative to it and the nature of the acquired pathology of the inner ear. The reaction of the facial nerve during stimulation of one of the electrodes of the cochlear implant system is a common complication that can lead to a deterioration in the patient’s quality of life due to significant discomfort and r

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Mitchell, T. E., and W. P. R. Gibson. "Positioning of the receiver-stimulator for the CI–24M cochlear implant in infants." Journal of Laryngology & Otology 113, no. 3 (1999): 212–16. http://dx.doi.org/10.1017/s0022215100143609.

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AbstractA new cochlear implant (CI–24M) has recently been released by Cochlear Ltd. The shape and size of the receiver-stimulator differs from that of the CI–22M. Infants as young as one year of age are now receiving cochlear implants. We have examined the likely effect of skull growth following the implantation of a CI-24M cochlear implant in an infant of this age.

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Zhu, Yun Feng, Ying Xu, Jia Ke, Fu Rong Ma, Lei Hu, and Chang Sheng Li. "Research on Computer-Assisted Minimally Invasive Cochlear Implant System." Applied Mechanics and Materials 577 (July 2014): 1241–44. http://dx.doi.org/10.4028/www.scientific.net/amm.577.1241.

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A computer-assisted minimally invasive cochlear implant system is developed to help doctors perform minimally invasive cochlear implant to avoid disadvantages of traditional complex operation like large invasive and long time to recovery et al. Virtual space visualization, space mapping and operation path plan, mechanism for drill positioning and holding are realized with multi-use of computer navigation and virtual space visualization technology and screw theory. Totally 6 cadaveric skull specimen experiments are performed. In experiments, all cochleae are opened perfectly without facial nerv

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Barker, Emma, Keith Trimble, Harley Chan, et al. "Intraoperative use of cone-beam computed tomography in a cadaveric ossified cochlea model." Otolaryngology–Head and Neck Surgery 140, no. 5 (2009): 697–702. http://dx.doi.org/10.1016/j.otohns.2008.12.046.

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Objectives: To describe a cadaveric temporal bone model of labyrinthitis ossificans and investigate the utility of intraoperative cone-beam computed tomography (CBCT) in the facilitating cochlear implantation. Design: Cadaveric temporal bone study. Methods: Five cadaveric heads had cement introduced into the 10 cochleas. CBCT and a conventional CT scan were compared to assess the extent of cochlear obliteration. The cement was drilled-out (under CBCT guidance, if required) and cochlear implant electrode arrays (from 3 different manufacturers) inserted. Results: CBCT images demonstrated tempora

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Wang, Zuo, Jianjun Li, Yongzhen Wu, Ruifeng Zhu, Binrui Wang, and Kai Zhao. "Optimal path generation in scala tympani and path planning for robotic cochlear implant of perimodiolar electrode." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 234, no. 6 (2020): 578–89. http://dx.doi.org/10.1177/0954411920908969.

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In this study, a new idea of the optimal path generation method was proposed and a path planning strategy for robotic cochlear implant of perimodiolar electrode was designed. The centerline of scala tympani channel was taken as the optimal implant path of the perimodiolar electrode, which aimed to reduce the damage of the electrode to the cochlea during implantation. First, the three-dimensional cochlear model was reconstructed based on the micro-computed tomography images of cochlea, and it was re-segmented to obtain the cross sections of the scala tympani at different angles. Then, the image

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Botoev, B. K., L. M. Ammuri, U. V. Stepanishcheva, et al. "Insertion trauma and functional recovery after cochlear implantation." Vestnik nevrologii, psihiatrii i nejrohirurgii (Bulletin of Neurology, Psychiatry and Neurosurgery), no. 6 (June 27, 2024): 723–31. http://dx.doi.org/10.33920/med-01-2406-05.

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The cochlear implant is considered one of the most successful medical devices. The efficiency and cost-effectiveness of implants making a difference in the life of a person with hearing loss is well recognized. There are approximately 750,000 implant patients worldwide. While implant technology is advancing and clinical indications continue to expand, the focus is increasingly shifting towards improving outcomes and enhancing the quality of patient care. Of particular relevance today is the preservation of delicate intracochlear structures during implant surgery, which provides the best prereq

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Wener, Emily, Lindsay Booth, Hailey Bensky, et al. "Exposure to Spoken Communication During the COVID-19 Pandemic Among Children With Cochlear Implants." JAMA Network Open 6, no. 10 (2023): e2339042. http://dx.doi.org/10.1001/jamanetworkopen.2023.39042.

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ImportanceSchool closures and other COVID-19–related restrictions could decrease children’s exposure to speech during important stages of development.ObjectiveTo assess whether significant decreases in exposure to spoken communication found during the initial phase of the COVID-19 pandemic among children using cochlear implants are confirmed for a larger cohort of children and were sustained over the first years of the COVID-19 pandemic.Design, Setting, and ParticipantsThis cohort study used datalogs collected from children with cochlear implants during clinical visits to a tertiary pediatric

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De Almeida, Amanda Naiara Barbon, Celine Garcia Dalpoz, Igor Giacometi Parreira, Fernanda da Silva Catellan, Lucas Valério Abrahim, and Julia Tirloni Ramires. "DEAFNESS AND COCHLEAR IMPLANT: A COMPREHENSIVE PERSPECTIVE." Revista Contemporânea 4, no. 2 (2024): e3326. http://dx.doi.org/10.56083/rcv4n2-035.

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Deafness is an auditory condition that can have significant impacts on the quality of life, involving psychosocial impairments and communication challenges. Early diagnosis, facilitated by neonatal auditory screening programs, is crucial for directing timely interventions. The cochlear implant technique emerges as an effective approach to restore hearing in cases of severe to profound deafness. The surgery involves the insertion of electrodes into the cochlea, allowing for direct electrical stimulation of the auditory nerve. Technological advancements in surgical techniques and devices have co

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Lobdell, Anne M., Joseph E. Dansie, and Sarah Hargus Ferguson. "Building a Cochlear Implant Practice: Five Lessons Learned." Perspectives on Aural Rehabilitation and Its Instrumentation 20, no. 1 (2013): 14–21. http://dx.doi.org/10.1044/arii20.1.14.

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Cochlear implants are becoming available to an increasing proportion of the deaf and hard-of-hearing population. As interest in and success with cochlear implants has grown, more and more private practice clinics are incorporating them into their scopes of practice. Over the past 2 years, the first 2 authors of this article have been heavily involved in developing cochlear implant programs in separate otolaryngology private practices. A recent conversation about this process revealed several common experiences and lessons learned. During these same 2 years, the third author began teaching the

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Pamuk, G., A. E. Pamuk, A. Akgöz, M. D. Bajin, B. Özgen, and L. Sennaroğlu. "Radiological measurement of cochlear dimensions in cochlear hypoplasia and its effect on cochlear implant selection." Journal of Laryngology & Otology 135, no. 6 (2021): 501–7. http://dx.doi.org/10.1017/s0022215121000979.

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AbstractObjectiveTo determine the effect of cochlear dimensions on cochlear implant selection in cochlear hypoplasia patients.MethodsTemporal bone computed tomography images of 36 patients diagnosed with cochlear hypoplasia between 2010 and 2016 were retrospectively reviewed and compared with those of 40 controls without sensorineural hearing loss.ResultsBasal turn length and mid-modiolar height were significantly lower in the cochlear hypoplasia patients with subtypes I, II and III than in the control group (p < 0.001). Mid-scalar length was significantly shorter in subtype I–III patients

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King, Jack. "Objective Measures and Programming Cochlear Implants." Perspectives on Hearing and Hearing Disorders in Childhood 19, no. 2 (2009): 54–62. http://dx.doi.org/10.1044/hhdc19.2.54.

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Abstract Advances in cochlear implant technology have allowed for amazing outcomes for children with severe to profound hearing loss. As result, cochlear implants are now provided for some children prior to their first birthday and are also provided to children with multiple disabilities. Frequently, it is difficult to use conventional behavioral measures to set cochlear implant MAPs for these patients, so clinicians have often relied on objective measures as a guide to determining appropriate MAP levels. The following discussion reviews the advantages and limitations of using objective measur

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Key, Alexandra P. F., Heather L. Porter, and Tamala Bradham. "Auditory Processing following Sequential Bilateral Cochlear Implantation: A Pediatric Case Study Using Event-Related Potentials." Journal of the American Academy of Audiology 21, no. 04 (2010): 225–38. http://dx.doi.org/10.3766/jaaa.21.4.2.

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Background: Past studies using event-related potentials (ERPs) elicited to single syllable stimuli in unilateral and bilateral cochlear implant users have suggested reorganization of the auditory cortex within the first 6–8 mo postimplantation (Sharma et al, 2002a, 2002b, 2006; Bauer et al, 2006). Better behavioral performance with bilateral implants is expected when bilateral cochlear implantation is performed simultaneously or when a second implant is provided after a short interval of auditory deprivation at a younger age (Murphy and O'Donoghue, 2007; Wolfe et al, 2007; Steffens et al, 2008

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Keppeler, Daniel, Christoph A. Kampshoff, Anupriya Thirumalai, et al. "Multiscale photonic imaging of the native and implanted cochlea." Proceedings of the National Academy of Sciences 118, no. 18 (2021): e2014472118. http://dx.doi.org/10.1073/pnas.2014472118.

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The cochlea of our auditory system is an intricate structure deeply embedded in the temporal bone. Compared with other sensory organs such as the eye, the cochlea has remained poorly accessible for investigation, for example, by imaging. This limitation also concerns the further development of technology for restoring hearing in the case of cochlear dysfunction, which requires quantitative information on spatial dimensions and the sensorineural status of the cochlea. Here, we employed X-ray phase-contrast tomography and light-sheet fluorescence microscopy and their combination for multiscale a

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Silva, Liliane Aparecida Fagundes, Maria Inês Vieira Couto, Carla Gentile Matas, and Ana Claudia Martinho de Carvalho. "Long latency auditory evoked potentials in children with cochlear implants: systematic review." CoDAS 25, no. 6 (2013): 595–600. http://dx.doi.org/10.1590/s2317-17822013.05000009.

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The aim of this study was to analyze the findings on Cortical Auditory Evoked Potentials in children with cochlear implant through a systematic literature review. After formulation of research question and search of studies in four data bases with the following descriptors: electrophysiology (eletrofisiologia), cochlear implantation (implante coclear), child (criança), neuronal plasticity (plasticidade neuronal) and audiology (audiologia), were selected articles (original and complete) published between 2002 and 2013 in Brazilian Portuguese or English. A total of 208 studies were found; howeve

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