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Cochlear Implants International

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https://www.readbyqxmd.com/read/29032744/acoustic-simulation-of-cochlear-implant-hearing-effect-of-manipulating-various-acoustic-parameters-on-intelligibility-of-speech
#1
Saransh Jain, Vipin Ghosh P G
OBJECTIVE: Cochlear implants process the acoustic speech signal and convert it into electrical impulses. During this processing, many parameters contribute to speech perception. The available literature reviewed the effect of manipulating one or two such parameters on speech intelligibility, but multiple parameters are seldom manipulated. METHOD: Acoustic parameters, including pulse rate, number of channels, 'n of m', number of electrodes, and channel spacing, were manipulated in acoustic simulations of cochlear implant hearing and 90 different combinations were created...
October 16, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/29032725/percutaneous-pedestals-in-cochlear-implantation
#2
Alistair Mitchell-Innes, Richard Irving, Robert Briggs
Percutaneous pedestals have been integral to the development of cochlear implants since 1969. By enabling direct electrical access to implanted electrodes or other devices, they allow optimization of control of stimulation strategies. Similarly, technology not validated for implantable use can be safely tested. These advantages have facilitated the development of cochlear implants and also resulted in their inclusion in trials investigating electronic implants developed for other organs. Surgery is straightforward, but post-operative care, in particular, skin-care is crucial to ensure complications are minimized...
October 16, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28992767/sensitivity-of-expressive-linguistic-domains-to-surgery-age-and-audibility-of-speech-in-preschoolers-with-cochlear-implants
#3
Johanna G Nicholas, Ann E Geers
OBJECTIVES: To determine whether relative delays among domains exist in the conversational use of vocabulary, syntax, and morphology by children with cochlear implants (CIs) and whether these were differentially affected by age of implantation (AOI) and the audibility of speech. METHODS: Participants in this short-term longitudinal study were 126 children with AOI of 6-38 months and a matched group of 30 children without hearing loss. Language samples of the same children at ages 3...
October 10, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28992760/-cochlear-view-plain-radiograph-a-simple-reliable-positioning-method
#4
Stephanie Elyse Ambrose, Norman Wendell Todd
INTRODUCTION: The plain 'cochlear view' radiograph for checking cochlear implant electrode coiling and depth of insertion is strongly influenced by positioning. The best accuracy and inter-observer agreement are achieved with the X-ray beam passing through the axis of the modiolus, which is perpendicular to the plane of the basal turn of the cochlea. The basal turn of the cochlea generally is 45 from the head's sagittal plane. OBJECTIVE: To describe a simple reliable technique of patient positioning to maximize the accuracy of postoperative radiographs in the evaluation of cochlear electrode insertion...
October 10, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28992743/the-knowledge-and-beliefs-regarding-practical-aspects-of-cochlear-implants-a-study-of-otorhinolaryngologists-in-a-secondary-setting-in-a-multi-country-study
#5
Patrick S C D'Haese, Vincent Van Rompaey, Marc De Bodt, Paul Van de Heyning
OBJECTIVE: The main goal of this study was to determine the knowledge and beliefs of otorhinolaryngologists in a secondary setting in selected economically advanced European countries concerning severe hearing loss, hearing aids, and cochlear implants (CIs). Secondary goals of the study looked into the information sources of the otorhinolaryngologists and into key topics of importance for these professionals. In Europe, many adults, who could benefit from a CI, do not have one despite their availability via national health care systems...
October 10, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28946841/balance-in-children-following-cochlear-implantation
#6
Andrew Kelly, Zhaobo Liu, Shanna Leonard, Fearghal Toner, Mark Adams, Joseph Toner
OBJECTIVES: To assess the vestibular function of children who had unilateral and bilateral cochlear implants compared with a control group of otherwise healthy children who had not been implanted. STUDY DESIGN: Observational case-control study. METHODS: Posturography was carried out in the form of a Modified Clinical Test of Sensory Interaction on Balance using a Wii Balance Board and the Vestio App on an iPod Touch. Thirty children in total were tested, 10 children in each cohort...
September 26, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28934019/cochlear-implantation-under-conscious-sedation-with-local-anesthesia-safety-efficacy-costs-and-satisfaction
#7
Samion Shabashev, Yasser Fouad, T Kate Huncke, J Thomas Roland
OBJECTIVE: To evaluate the safety, efficiency, cost effectiveness, and satisfaction of patients undergoing cochlear implantation under conscious sedation versus general anesthesia. STUDY DESIGN: Retrospective case review of 20 patients who underwent cochlear implantation under conscious sedation which was compared to 20 age-matched patients where surgery was performed under general anesthesia. METHODS: Perioperative times, length of stay, anesthesia drug costs, postoperative complications, and patient satisfaction were compared between the two groups...
September 21, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28925814/evaluation-of-pediatric-cochlear-implant-care-throughout-europe-is-european-pediatric-cochlear-implant-care-performed-according-to-guidelines
#8
Hanneke Bruijnzeel, Aren Bezdjian, Anke Lesinski-Schiedat, Angelika Illg, Konstance Tzifa, Luisa Monteiro, Antonio Della Volpe, Wilko Grolman, Vedat Topsakal
OBJECTIVES: International guidelines indicate that children with profound hearing loss should receive a cochlear implant (CI) soon after diagnosis in order to optimize speech and language rehabilitation. Although prompt rehabilitation is encouraged by current guidelines, delays in cochlear implantation are still present. This study investigated whether European countries establish timely pediatric CI care based on epidemiological, commercial, and clinical data. METHODS: An estimation of the number of pediatric CI candidates in European countries was performed and compared to epidemiological (Euro-CIU), commercial (Cochlear(®)), and clinical (institutional) age-at-implantation data...
September 19, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28922984/cortical-auditory-evoked-potential-caep-and-behavioural-measures-of-auditory-function-in-a-child-with-a-single-sided-deafness
#9
Oscar M Cañete, Suzanne C Purdy, Michel Neeff, Colin R S Brown, Peter R Thorne
OBJECTIVES: To study the changes in behavioural and cortical responses over time in a child with single-sided deafness fitted with a cochlear implant (CI). METHODS: Cortical auditory evoked potentials (CAEPs) in noise (+5 dB signal-to-noise ratio) were recorded and auditory skills were assessed using tests of sound localization, spatial speech perception in noise, and self-ratings of auditory abilities (Listening inventory for education, LIFE and Speech, spatial and qualities of hearing questionnaire, SSQ parental version)...
September 19, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28889790/auditory-verbal-practice-family-centered-early-intervention
#10
Elizabeth Tyszkiewicz
No abstract text is available yet for this article.
September 11, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28889786/implantable-microphones-as-an-alternative-to-external-microphones-for-cochlear-implants
#11
Alistair Mitchell-Innes, Robert Morse, Richard Irving, Philip Begg
Totally implantable cochlear implants may be able to address many of the problems cochlear implant users have around cosmetic appearances, discomfort, and restriction of activities. The major technological challenges that need to be solved to develop a totally implantable device relate to implanted microphone performance. Previous attempts at implanting microphones for cochlear implants have not performed as well as conventional cochlear implant microphones, and in addition have struggled with extraneous body or surface contact noise...
September 11, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28784040/the-vibrant-soundbridge-%C3%A2-middle-ear-implant-a-historical-overview
#12
S Labassi, M Beliaeff, V Péan, P Van de Heyning
OBJECTIVE: To present a historical overview of the Vibrant Soundbridge(®) (VSB) middle ear implant (MEI), since its beginning in the 1990s to date and to describe its course and contemplate what it might become in the future. HISTORY: MEIs started to take form in researchers' mind in the 1930s with the first experiment of Wilska. In the 1970s, several devices, such as the Goode and Perkins', the Maniglia's, or the Hough and Dormer's were created but remained prototypes...
August 8, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28738739/review-of-outcomes-and-measurement-instruments-in-cochlear-implantation-studies
#13
Simone Schaefer, Lise Henderson, John Graham, Stephen Broomfield, Helen Cullington, David Schramm, Susan Waltzman, Iain Bruce
No abstract text is available yet for this article.
July 25, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28793847/effects-of-electrode-deactivation-on-speech-recognition-in-multichannel-cochlear-implant-recipients
#14
Kara C Schvartz-Leyzac, Teresa A Zwolan, Bryan E Pfingst
OBJECTIVES: The objective of the current study is to evaluate how speech recognition performance is affected by the number of active electrodes that are turned off in multichannel cochlear implants. Several recent studies have demonstrated positive effects of deactivating stimulation sites based on an objective measure in cochlear implant processing strategies. Previous studies using an analysis of variance have shown that, on average, cochlear implant listeners' performance does not improve beyond eight active electrodes...
November 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28726592/effect-of-extreme-adaptive-frequency-compression-in-bimodal-listeners-on-sound-localization-and-speech-perception
#15
Lidwien C E Veugen, Josef Chalupper, Lucas H M Mens, Ad F M Snik, A John van Opstal
OBJECTIVES: This study aimed to improve access to high-frequency interaural level differences (ILD), by applying extreme frequency compression (FC) in the hearing aid (HA) of 13 bimodal listeners, using a cochlear implant (CI) and conventional HA in opposite ears. DESIGN: An experimental signal-adaptive frequency-lowering algorithm was tested, compressing frequencies above 160 Hz into the individual audible range of residual hearing, but only for consonants (adaptive FC), thus protecting vowel formants, with the aim to preserve speech perception...
September 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28665247/the-impact-of-vestibular-status-prior-to-cochlear-implantation-on-postural-control-a-multiple-case-study
#16
Maxime Maheu, Sara Pagé, Andréanne Sharp, Audrey Delcenserie, François Champoux
OBJECTIVE: The goal of the present study was to investigate the impact of unilateral cochlear implantation on postural control in relation to the vestibular status before CI surgery. METHODS: We recruited 17 participants (four CI candidates and 13 hearing controls) and performed complete vestibular evaluation (cVEMP, oVEMP, vHIT) and postural evaluation using a force platform, prior and following unilateral cochlear implant surgery. RESULTS: Our study suggests that an increase in postural sway following cochlear implant was present only for the participants that received the implant in the ear with the better vestibular function...
September 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28728475/bill-gibson-pioneering-bionic-ear-surgeon
#17
Richard Ramsden
No abstract text is available yet for this article.
July 21, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28629258/implementation-and-preliminary-evaluation-of-c-tone-a-novel-algorithm-to-improve-lexical-tone-recognition-in-mandarin-speaking-cochlear-implant-users
#18
Lichuan Ping, Ningyuan Wang, Guofang Tang, Thomas Lu, Li Yin, Wenhe Tu, Qian-Jie Fu
OBJECTIVES: Because of limited spectral resolution, Mandarin-speaking cochlear implant (CI) users have difficulty perceiving fundamental frequency (F0) cues that are important to lexical tone recognition. To improve Mandarin tone recognition in CI users, we implemented and evaluated a novel real-time algorithm (C-tone) to enhance the amplitude contour, which is strongly correlated with the F0 contour. METHODS: The C-tone algorithm was implemented in clinical processors and evaluated in eight users of the Nurotron NSP-60 CI system...
June 20, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28602150/translabyrinthine-vestibular-schwannoma-resection-with-simultaneous-cochlear-implantation
#19
Austin N DeHart, William C Broaddus, Daniel H Coelho
OBJECTIVES: (1) Report a rare case of translabyrinthine resection of a sporadic vestibular schwannoma (VS) and concurrent cochlear implantation (CI). (2) Discuss pre-, intra-, and post-operative considerations in this unique patient population. (3) Describe surgical and audiologic outcomes reported in this population. METHODS: Case report and review of the literature. PubMed search 'Cochlear Implantation'[Mesh] AND ('Neuroma, Acoustic'[Mesh] OR 'VESTIBULAR SCHWANNOMA'[All Fields] OR 'SCHWANNOMA'[All Fields]) limited to humans and English language...
June 12, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28602134/the-effects-of-early-auditory-based-intervention-on-adult-bilateral-cochlear-implant-outcomes
#20
Stacey R Lim
OBJECTIVES: The goal of this exploratory study was to determine the types of improvement that sequentially implanted auditory-verbal and auditory-oral adults with prelingual and childhood hearing loss received in bilateral listening conditions, compared to their best unilateral listening condition. METHODS: Five auditory-verbal adults and five auditory-oral adults were recruited for this study. Participants were seated in the center of a 6-loudspeaker array. BKB-SIN sentences were presented from 0° azimuth, while multi-talker babble was presented from various loudspeakers...
June 12, 2017: Cochlear Implants International
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