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Environmental sound perception of cochlear implant usersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The purposes of this study were (1) to develop a new test of environmental sound perception, the Environmental Sounds Perception Test (EST), (2) to compare the performance of experienced cochlear implant (CI) recipients with that of age-equivalent normally hearing (NH) listeners using this new test, and (3) to pilot test its clinical use as a pre-to-post assessment tool. The closed-set EST consisted of 45 different sounds classified into nine categories, with each sound being represented by two different tokens. The results showed that the NH participants scored significantly higher than the experienced CI users (p < 0.001...
Source: Cochlear Implants International - October 30, 2009 Category: Audiology Authors: VALERIE LOOI, JANNA ARNEPHY Source Type: journals

Cochlear implantation in a profoundly deaf patient who also suffers from multiple sclerosis - a case studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a case study of cochlear implantation in a post-lingual adult having bilateral profound hearing loss for over 30 years in addition to multiple sclerosis unrelated to his deafness. Assessment of benefit in terms of speech-perception ability and quality of life reveal that long-term auditory deprivation and co-incidental multiple sclerosis are not a contraindication for cochlear implantation. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - October 26, 2009 Category: Audiology Authors: Jyoti Shanbhag, Neelam Vaid Source Type: journals

Acoustic analysis of voice in cochlear implant recipients with post-meningitic hearing lossEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to evaluate the critical time period between the onset of sensorineural hearing loss and cochlear implantation with respect to normal voice production in children with post-meningitic hearing loss. Acoustic measures of voice production were obtained from ten paediatric cochlear implant recipients with post-meningitic hearing loss. Acoustic measures were obtained utilising the Multi-Dimensional Voice Program and Computerized Speech Laboratory (Kay Elemetrics Corp.). Measures were based on sustained phonation of the vowel /a/. Acoustic parameters included fundamental frequency, short- and long...
Source: Cochlear Implants International - October 5, 2009 Category: Audiology Authors: J Allegro, BC Papsin, RV Harrison, P Campisi Source Type: journals

Associations between auditory capacity, speech and language, level of communication and parental assessment of children with cochlear implantEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
168 children with cochlear implants were assessed as regards to auditory capacity, level of speech and language and communicative skills. The assessments were made by speech and language pathologists and parents. The purpose of the study was to analyse the associations between the four areas and furthermore to analyse associations between professional and parental assessments. The children were assessed with the Tait Video Analysis, the receptive part of the Reynell Test, a phonological test and a vocabulary test. The four objective tests were analysed for potential associations between results. In addition, potential asso...
Source: Cochlear Implants International - August 19, 2009 Category: Audiology Authors: Lone Percy-Smith Source Type: journals

Estimation of risks associated with paediatric cochlear implantationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objectives of this study were to estimate the rates of complications associated with paediatric cochlear implantation use: a) at one Canadian cochlear implant (CI) centre, and b) in the published literature. It comprised a retrospective hospital-based chart review and a concurrent review of complications in the published literature. There were 224 children who had undergone surgery from 1994 to June 2007. Results indicate that the rates of complications at the local Canadian paediatric CI centre are not significantly different from the literature rates for all examined complication types. This hospital-based retrospect...
Source: Cochlear Implants International - August 3, 2009 Category: Audiology Authors: J. Cyne Johnston, Andrée Durieux Smith, Elizabeth Fitzpatrick, Karen Benzies, Annette O'connor, Douglas Angus, David Schramm Source Type: journals

The use of Lean Thinking techniques in implementing the Department of Health, UK, 18-week waiting time directive for cochlear implantationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In October 2007, Primary Care Trusts throughout the East of England agreed to fund assessment and implantation for all patients referred to Cambridge University Hospitals' Cochlear Implant Unit ('the Unit') providing they met locally agreed criteria.Subsequently, the Unit has employed Lean Thinking techniques to maximize departmental efficiency in order to comply with the Department of Health's 18-week guideline. Analysis of the patient's pathway, from referral to implantation surgery, highlighted areas of 'waste' that were causing delays in downstream processes. Through a number of streamlining measures a large waiting li...
Source: Cochlear Implants International - August 3, 2009 Category: Audiology Authors: Peter Kullar, Frances Harris, Simon KW Lloyd, John Briggs, Zebunnisa H Vanat, John Willis, Patrick R Axon Source Type: journals

Conversion of scores between Bamford, Kowal and Bench (BKB) sentences and Arthur Boothroyd (AB) words in quiet for cochlear implant patientsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper describes the relationship between the scores obtained in the Bamford, Kowal and Bench (BKB) sentence test and the Arthur Boothroyd (AB) word test in quiet for a group of 71 cochlear implant users. Each subject was tested at the same appointment and in the same environment during routine clinical appointments at the South of England Cochlear Implant Centre.Using rationalised arcsine transformation and a linear regression calculation, conversion tables were produced from BKB to AB and from AB to BKB scores. The relationship between scores obtained from the two tests was highly significant.These conversion tables ...
Source: Cochlear Implants International - July 14, 2009 Category: Audiology Authors: Debi Vickers, Julie Eyles, Julie Brinton, Brian Glasberg, John Graham Source Type: journals

Bilateral sequential cochlear implantation in the congenitally deaf child: evidence to support the concept of a 'critical age' after which the second ear is less likely to provide an adequate level of speech perception on its ownEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study attempts to answer the question of whether there is a 'critical age' after which a second contralateral cochlear implant is less likely to provide enough speech perception to be of practical use. The study was not designed to predict factors that determine successful binaural implant use, but to see if there was evidence to help determine the latest age at which the second ear can usefully be implanted, should the first side fail and become unusable.Outcome data, in the form of speech perception test results, were collected from 11 cochlear implant programmes in the UK and one centre in Australia. Forty-seven co...
Source: Cochlear Implants International - July 9, 2009 Category: Audiology Authors: John Graham, Debi Vickers, Julie Eyles, Julie Brinton, Ghada Al Malky, Wanda Aleksy, Jane Martin, Lise Henderson, Deborah Mawman, Philip Robinson, Elizabeth Midgley, Kate Hanvey, Tracey Twomey, Susan Johnson, Zebunnisa Vanat, Cath Broxholme, Cecilia Mcana Source Type: journals

The influence of the coupling of actuation drivers of implantable hearing systems on the mechanics of the middle earEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We used multifrequency tympanometry to provide middle ear mechanics after implantation of different implantable hearing aids. A total of 34 patients were included in the investigation; 19 of them were fitted with the Otologics system and 15 with the MED-EL Vibrant Soundbridge system. With the Otologics recipients, measurements were made preoperatively and both two months and at least 12 months postoperatively. Measurements involving the MED-EL patients were taken at least 12 months postoperatively. For all measurements, the non-implanted contralateral side was used as a control. Preoperatively, the resonance frequency of t...
Source: Cochlear Implants International - April 24, 2009 Category: Audiology Authors: M Stieve, M Winter, RD Battmer, M Lenarz, TH Lenarz Source Type: journals

The transmeatal approach: a new technique in cochlear and middle ear implantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We report on the use of this approach in 131 patients (115 consecutive paediatric and 16 adult) between May 2004 and December 2007. During 2 to 46 months of follow-up there was no electrode extrusion. Copyright © 2009, John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - April 17, 2009 Category: Audiology Authors: Khalid Taibah Source Type: journals

Cochlear implantation in inner ear malformationsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Inner ear malformations constitute about 20% of congenital sensorineural hearing loss. In this review article an updated classification of cochlear malformations is provided. Incomplete partition and cochlear hypoplasia cases are each divided further into three groups. There are two main difficulties in the surgery of inner ear malformations; gusher and facial nerve abnormalities. Radiological features of malformations necessary to identify these problems preoperatively are discussed. Facial nerve abnormalities that may occur are described. Two different types of cerebrospinal fluid leakage are defined and necessary measur...
Source: Cochlear Implants International - April 8, 2009 Category: Audiology Authors: Levent Sennaroglu Source Type: journals

Cochlear implantation in inner ear malformations - a review articleEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Inner ear malformations constitute about 20% of congenital sensorineural hearing loss. In this review article an updated classification of cochlear malformations is provided. Incomplete partition and cochlear hypoplasia cases are each divided further into three groups. There are two main difficulties in the surgery of inner ear malformations; gusher and facial nerve abnormalities. Radiological features of malformations necessary to identify these problems preoperatively are discussed. Facial nerve abnormalities that may occur are described. Two different types of cerebrospinal fluid leakage are defined and necessary measur...
Source: Cochlear Implants International - April 7, 2009 Category: Audiology Authors: Levent Sennaroglu Source Type: journals

Comparison of loudness adjustments by MCL and maplaw in users of the MED-EL COMBI 40/40+ cochlear implant systemEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The programming of a CI speech processor involves measurement of electrical threshold and 'most comfortable loudness' (MCL) levels on each electrode. However, when the derived 'map' is activated the resultant percept is often too loud or too soft. In this situation, adjustments of MCL settings are usually made in order to achieve a comfortable percept.The present study examined the range of volume control adjustments in 24 users of the MED-EL C40/40+ device. Volume control settings varied from 36% to 126% with a mean of 84.3% (SD = 20.4%). Additionally, the output compression function ('maplaw') was adjusted to test whethe...
Source: Cochlear Implants International - March 19, 2009 Category: Audiology Authors: Paul Boyd, Alexia Euthymiades Source Type: journals

Case report of a child with otoacoustic emissions and profound hearing loss in whom otoacoustic emissions were preserved after cochlear implantationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The management of patients characterised by the presence of otoacoustic emissions and/or cochlear microphonics suggesting normal outer hair cell function in conjunction with absent or grossly abnormal auditory brainstem responses is often associated with particularly poor response to amplification. Cochlear implantation has been shown to be an option in affected patients. Here, we report a case of successful cochlear implantation and preserved otoacoustic emissions in a child suffering from this hearing disorder. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - March 14, 2009 Category: Audiology Authors: Dirk Beutner, Ruth Lang-Roth, Astrid Foerst, Alexander E Volk, Martin Walger Source Type: journals

A framework for good practice: managing failures in a cochlear implant serviceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Cochlear implants can provide the recipient and their family with wonderful outcomes in terms of their improved access to sound and to speech. However the experience of a cochlear implant failing is distressing for all concerned. Clinicians endeavour to ensure that the process of confirming the failure, re-implantation and subsequent rehabilitation is as smooth as possible. In order to benefit from each others experience, a working party of cochlear implant centre coordinators and representatives from the Ear Foundation met on a number of occasions to draw up a protocol which could be used widely throughout the British Coc...
Source: Cochlear Implants International - March 2, 2009 Category: Audiology Authors: Julie Brinton Source Type: journals

Independent component analysis for robust assessment of auditory system maturation in children with cochlear implantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The long latency auditory evoked potential (LLAEP) has been used for tracking changes in latency and morphology of the P1 peak in order to evaluate the maturation of the auditory system in children with cochlear implants (CIs). Cochlear implants can induce an artefact in the recordings when sounds are presented, which makes the analysis of LLAEPs much harder. Independent component analysis (ICA) has been used to remove this artefact. In this paper we apply a procedure based on ICA to reduce the CI artefact, to detect the LLAEPs and to use the changes in the spatial projections of their independent components (ICs) for a ro...
Source: Cochlear Implants International - February 28, 2009 Category: Audiology Authors: Norma Castañeda-Villa, Juan Manuel Cornejo-Cruz, Christopher J. James Source Type: journals

Simultaneous bilateral cochlear implantation: prospective study in adultsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Normal-hearing listeners gain important everyday benefits from having two ears, particularly for determining where sounds come from and for understanding speech in noisy environments. Users of two cochlear implants may have the opportunity to experience some of these bilateral advantages. The primary aim of this study was to document bilateral versus unilateral listening benefit in 15 postlinguistically deafened adults implanted simultaneously with two Harmony® (HiRes 90K®) cochlear implants. Speech perception (in quiet and in noise) and localization accuracy were assessed for each ear alone and both ears together. Subje...
Source: Cochlear Implants International - February 26, 2009 Category: Audiology Authors: Dawn Burton Koch, Sigfrid D Soli, Mark Downing, Mary Joe Osberger Source Type: journals

The importance of intra-operative imaging during cochlear implant surgeryEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, intra-operative monitoring tests during CI surgery play different roles: measurement of impedances and NRI can evaluate the integrity of implant electrodes and the status of the electrode cochlea interface, but they cannot be the only way to confirm correct positioning of the array. In our opinion the intra-operative radiological check is helpful during CI surgery, especially when there is any doubt about correct electrode insertion. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - February 6, 2009 Category: Audiology Authors: M Viccaro, E Covelli, E De Seta, G Balsamo, R Filipo Source Type: journals

Cochlear implant and delayed facial palsyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objectives of this study were: to report a case of delayed facial palsy following cochlear implant surgery in a patient who had positive viral antibody markers pre operatively; and to review the literature on delayed onset facial paralysis following viral reactivation and its relation to cochlear implant surgery. An extensive literature review was done using internet and medical search engines and library facilities. Important articles on the topic were identified and summarised. Data on delayed facial palsy following cochlear implant surgery were collected, constructed in a coherent way and details discussed. Postulat...
Source: Cochlear Implants International - February 5, 2009 Category: Audiology Authors: Shawn Thadathil Joseph, Rajesh Vishwakarma, Mukesh Kumar Ramani, Rupa Aurora Source Type: journals

Development of the computerized Mandarin Pediatric Lexical Tone and Disyllabic-word Picture Identification Test in Noise (MAPPID-N)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
MAPPID-N was developed to assess the speech-recognition abilities in noise of Mandarin-speaking children on disyllabic words, and lexical tones in monosyllabic words, in a picture-identification test format. Twenty-six normal-hearing children aged four to nine years listened repeatedly to the test materials where noise was spatially mixed with or separated from speech, in different signal-to-noise (SNR) ratios, to obtain performance-SNR functions and SNR for 50% correct scores (SNR-50%). SNR-50% improved with age only when noise was spatially separated from speech but not when noise was mixed with speech, suggesting the im...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Kevin C P YUEN, Lan Luan, Huan Li, Cao-Gang Wei, Ke-Li Cao, Meng Yuan, Tan Lee Source Type: journals

Development of the computerized Cantonese Disyllabic Lexical Tone Identification Test in Noise (CANDILET-N)Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
CANDILET-N is a closed-set speech-recognition test to assess lexical tone recognition in noise for Cantonese speakers. The test consists of 60 test items in a four-alternative forced-choice test paradigm, with male and female speaker versions. Each test plate consists of two disyllabic-word lexical tone minimal pair test items and their respective phonemic distracters. Psychometric performance SNR (signal-to-noise ratio) functions from 26 normal hearing adult subjects were fitted to a logistic regression model to obtain the SNR for 50% correct score (SNR-50%) for individual test items. The mean SNR-50% of the 60 test items...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Kevin C P Yuen, Ka Wai Pang, Michael C F Tong, Charles A Van Hasselt, Meng Yuan, Tan Lee, Sigfrid D Soli Source Type: journals

Lexical tone and word recognition in noise of Mandarin-speaking children who use cochlear implants and hearing aids in opposite earsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The benefits of bimodal hearing (cochlear implant and hearing aid in opposite ears) in children are well documented in English-speaking populations (Ching et al., 2000; Holt et al., 2005) but not much evidence has been reported from populations using tonal languages. The lexical tones in tonal languages are heavily loaded with semantic and grammatical information, which are essentially represented by the fundamental frequency (F0) and low-order harmonics of the speech signal. This unique linguistic feature means that tonal language-speaking CI recipients may achieve more bimodal benefits than their non-tonal language peers...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Kevin C P Yuen, Ke-Li Cao, Chao-Gang Wei, Lan Luan, Huan Li, Zhi-Yong Zhang Source Type: journals

Baha solutions for patients with severe mixed hearing lossEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Patients with a mixed hearing loss present special challenges. The amplification demands of mixed hearing loss can drive powerful digital hearing aids to their limits and introduce distortion through saturation. Conversely, the Baha® System effectively bypasses the conductive component and focuses on compensating for the sensorineural component of the hearing loss. Ten patients with a mixed hearing loss participated in the present study. Results indicate that Baha provided significant benefits (p < 0.01) over conventional air conduction hearing instruments across the dimensions of audibility, speech understanding and soun...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Mark C. Flynn, Andre Sadeghi, Glenn Halvarsson Source Type: journals

Cantonese lexical tone recognition from frequency-specific temporal envelope and periodicity components in the same versus different noise band carriersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Temporal envelope and periodicity components (TEPCs) in the speech signal offer important cues for speech recognition. A recent study revealed that TEPCs extracted from the high-frequency regions contribute significantly to Cantonese lexical tone recognition at the monosyllabic word level (Yuen et al., 2006). The aim of the current study was to compare the contributions of TEPCs from different frequency regions for Cantonese lexical tone recognition in connected speech, using the same or different noise band carriers and a very limited number of frequency bands. Test stimuli were Cantonese disyllabic word minimal pairs dif...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Kevin C P Yuen, Michael C F Tong, Charles A. Van Hasselt, Meng Yuan, Tan Lee, Sigfrid D Soli Source Type: journals

Neural adaptation and the ECAP response threshold: A pilot studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The electrically evoked compound action potential (ECAP) amplitude resulting from a train of pulses of finite duration (100 ms or 200 ms) was found to vary inversely to the stimulation rate (pulse rate), corroborating well with neural adaptation results from a previous study (Dillier et al., 2005). Amplitude growth functions based on these adapted responses yield thresholds (TNRT) that increase with increasing pulse rate, contrary to behavioural thresholds, which are known to vary inversely with the stimulation rate. Adaptation effects are therefore a confounding factor that must be accounted for when attempting to compare...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Waikong Lai, Norbert Dillier Source Type: journals

Are cortical auditory evoked potentials useful in the clinical assessment of adults with cochlear implants?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Cochlear implant (CI) trends are changing as more recipients are receiving bilateral implantation. Also more pre-lingually deafened adults are choosing to be implanted. Clinical assessment after cochlear implantation is usually based on speech perception tests. Such tests, however, may not be a realistic outcome measure for some of these cases, creating a need for more objective measures of CI performance. Cortical auditory evoked potentials (CAEPs) recorded in the sound field may be a fast and reliable procedure for the clinical audiologist to determine CI outcomes. This paper presents two case studies illustrating CAEP f...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Celene Mcneill, Mridula Sharma, Suzanne C. Purdy Source Type: journals

High precision cochleostomy by use of a pulsed CO2 laser - an experimental approachEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A precise cochleostomy is a crucial step in cochlear implantation, particularly if residual hearing is to be preserved. A contactless ablation of the promontory bone by a pulsed CO2 laser system seems to be a promising approach. The bone is removed by a scan head controlled laser beam in sequential scan cycles with a pulse rate of 50-100 [mgr]s. Digital picture analysis and pattern detection are used to identify the membranous lining of the cochlea. We achieved a bone ablation in a micrometer range per scan cycle with the laser. A perforation of the promontory bone could be detected by automatic pattern detection. The enha...
Source: Cochlear Implants International - February 4, 2009 Category: Audiology Authors: Thomas Klenzner, Felix B Knapp, Joerg Schipper, Joerg Raczkowsky, Heinz Woern, Lueder A Kahrs, Martin Werner, Peter Hering Source Type: journals

Psychometric validity of the Cochlear Implant Function Index (CIFI): a quality of life assessment tool for adult cochlear implant usersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Conclusion The psychometric properties of this user friendly survey demonstrate consistently good scalability. Based on these findings, the CIFI provides a validated tool that can be used for systematic comparisons between groups of patients or for follow-up outcomes in patients who use cochlear implants. Further study is indicated to correlate CIFI scores with sound and speech perception scores. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - January 24, 2009 Category: Audiology Authors: Daniel H. Coelho, Paul E. Hammerschlag, Yael Bat-Chava, Darius Kohan Source Type: journals

Tone perception results with Harmony and HiRes 120 in Cantonese-speaking subjectsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The goal of this study was to examine tonal language perception in adults with cochlear implants who are native speakers of Cantonese. Ten adult subjects were implanted with HiRes 90K devices and participated in the study. Baseline data were obtained with standard HiRes and compared with HiRes 120. Subjects were evaluated using a tone identification test and a questionnaire. While objective outcome measures with the tone identification test did not show significant differences between standard HiRes and HiRes 120, subjective evaluation with the questionnaire showed significant differences in the overall satisfaction percei...
Source: Cochlear Implants International - January 22, 2009 Category: Audiology Authors: Kathy YS Lee, Betty PK Luk, Terence KC Wong, Michael CF Tong, Charles Andrew Van Hasselt Source Type: journals

Investigating cochlear implant place-pitch perception with the Modified Melodies testEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
There has been speculation that cochlear implant place-of-excitation cues could be more akin to the brightness attribute of timbre (the spectral profile) than to melodic pitch. As brightness can be ordered on a low-to-high scale, it would allow high scores on pitch-ranking tests. In contrast, the Modified Melodies test measures pitch perception in a melodic context. In each trial, a familiar melody was presented twice. In one presentation, randomly selected, the pitch was deliberately modified. The subject's task was to select the un-modified melody. Six Nucleus implant recipients were tested with melodies presented as pur...
Source: Cochlear Implants International - January 16, 2009 Category: Audiology Authors: Brett Swanson, Pam Dawson, Hugh Mcdermott Source Type: journals

Effects of cochlear implants: a qualitative studyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This qualitative study aimed to gain a deeper insight into the effects of cochlear implants on recipients' lives, as perceived by the recipients themselves. To obtain this insight, we used four open-ended questions. We invited 107 adult patients from two Norwegian implant centres. Of these, 74 returned completed questionnaires (69%). Recipients perceived that they had got 'A new life' with the implant. Contributing to this global category of effects were four other categories. These concerned subjects' interactions with the world around them, experience of themselves, ability to hear the world around them and finally certa...
Source: Cochlear Implants International - January 15, 2009 Category: Audiology Authors: Silje Rembar, Ola Lind, Haakon Arnesen, Anne-Sofie Helvik Source Type: journals

Radiologically assisted navigation in cochlear implantation for X-linked deafness malformationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The X-linked deafness syndrome is characterised by a complex labyrinth malformation with a shortened cochlea with missing bony separation between the cochlea and internal auditory canal and a deviant route of the facial nerve. Cochlear implant surgery in this malformation may be complicated by an unintended electrode insertion into the internal auditory canal. The authors report a new surgical approach: intraoperative three dimensional-volume tomography (3D-VT)-based navigation and direct intraoperative control by 3D-VT. The navigation dataset was based on intraoperative 3D-VT after performing the mastoidectomy and posteri...
Source: Cochlear Implants International - January 14, 2009 Category: Audiology Authors: Antje Aschendorff, Wolfgang Maier, Katrin Jaekel, Thomas Wesarg, Susan Arndt, Roland Laszig, Pit Voss, Marc Metzger, Dirk Schulze Source Type: journals

Micro-focus fluoroscopy - A great tool for electrode developmentEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The aim of this study was to utilise micro-focus X-ray fluoroscopy for viewing electrode movement in the cochlea. Various prototypes of newly designed cochlear implant electrodes were evaluated during insertion studies on human cadaver temporal bones. The magnified fluoroscopic images were observed in real-time and recorded for retrospective studies. In 30 insertions of hearing preservation (Hybrid-L) arrays, fluoroscopy provided crucial information on the tip design, length of array and stiffening stylet. In 44 insertions of Contour Advance enhanced (CAe) arrays, the length, curvature, depth of insertion and degree of sti...
Source: Cochlear Implants International - January 13, 2009 Category: Audiology Authors: Jin Xu, Rob Briggs, Michael Tykocinski, Carrie Newbold, Frank Risi, Robert Cowan Source Type: journals

Neonatal hearing screening - the Indian experienceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A neonatal hearing screening programme has been established in Pune, India. A total of 2621 babies were screened from August 2005 to August 2007 using otoacoustic emissions (OAE) followed by brainstem evoked response audiometry (BERA) for those who referred on the second OAE testing. Two hundred and forty nine babies were referred on the second OAE testing and of these only 52 came back and were further evaluated using BERA. Fifteen of these 52 babies were found to have a significant hearing loss. The significance of these results is discussed. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - January 13, 2009 Category: Audiology Authors: Neelam Vaid, Jyoti Shanbhag, Rajesh Nikam, Anjali Biswas Source Type: journals

The use of intra-operative electrical auditory brainstem responses to predict the speech perception outcome after cochlear implantationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Electrically evoked auditory brainstem responses (EABR) were obtained intra-operatively from children receiving full insertion of Cochlear CI24 implant. The EABR waveform was quantified according to the presence or absence of waves (eII-eV). Each trace was scored from 0-3 providing a maximum score for all 22 electrodes of 66 in the monopolar mode. Speech perception scores were measured after one year in 245 children and after two years of cochlear implant use in 148 children. Significant differences in the EABR waveforms were found between those recipients who achieved scores of 4 or greater on the Melbourne scale and thos...
Source: Cochlear Implants International - January 13, 2009 Category: Audiology Authors: William P R Gibson, Halit Sanli, Colleen Psarros Source Type: journals

Auditory performance and central auditory processing after cochlear implantation in patients deafened by meningitisEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objective of this study was to describe the auditory performance of patients deafened by meningitis in closed-set, open-set and language tests (Luria's test). Ten paediatric subjects deafened by meningitis were compared with a peer group of ten paediatric congenitally deaf subjects. All the subjects had a full insertion of a Nucleus device. Three of the subjects in each group had a longer follow-up period and were selected to perform the Luria test. The closed-set tests did not show statistically significant differences between the two groups (p < 0.21) but comparative results of open-set bisyllabic tests did show stat...
Source: Cochlear Implants International - January 13, 2009 Category: Audiology Authors: Juan Manuel García, Maria Leonor Aparicio, Augusto Peñaranda, Clemencia Barón, Pilar Cutha Source Type: journals

Classification of cochlear implant failures and explantation: the Melbourne experience, 1982-2006Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The definition and categorization of reasons for cochlear implant (CI) failure have recently been standardized following the publication of the European Consensus Statement on Cochlear Implant Failures and Explantation (ECSCIFE) (2005). The aim of this study was to review the Melbourne experience with cochlear implant failure and reimplantation, applying ECSCIFE guidelines for categorization and assessing hearing outcomes. A retrospective review was carried out of Melbourne CI clinic's records to identify all cases of implant failure and categorize them using ECSCIFE guidelines. Comparison was made of pre- and post-reimpla...
Source: Cochlear Implants International - January 10, 2009 Category: Audiology Authors: M I Trotter, S Backhouse, S Wagstaff, R Hollow, R J S Briggs Source Type: journals

Keyhole cochlear implantation surgeryEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A limited access 'keyhole' cochlear implantation (CI) surgical technique is presented. The surgery employs a 15-18 mm diameter C-incision on the rear of the auricle. The implant is retained in a snug pericranial pocket. A bony retention well is avoided. Minimal mastoid cell clearance is used. The surgery is brief, atraumatic and well suited to small infant cases. Used in 315 sequential routine CI cases from 1997-2007, the complication rates compare favourably with past reports. The outcomes of the series question the use of larger incisions and implant retention wells. Current implant designs should be modified for better ...
Source: Cochlear Implants International - January 7, 2009 Category: Audiology Authors: Bruce Black Source Type: journals

The multi-channel cochlear implant: Past, present and future perspectivesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Initial research demonstrated that only low frequencies could be mimicked with rate of electrical stimulation, and thus multi-channel rather than single-channel stimulation was required for the place coding of the mid-high speech frequencies.Place coding of mid-high frequencies was best achieved with electrodes inside the cochlea. Furthermore, correct biomechanical properties of a multiple electrode bundle were required for it to pass around the cochlear spiral to the speech frequency region.Biological studies showed too that intra-cochlear electrodes could be used with minimal trauma, safe electrical stimulus parameters, ...
Source: Cochlear Implants International - January 6, 2009 Category: Audiology Authors: Graeme Clark Source Type: journals

HiRes with Fidelity 120 benefit in native speakers of KoreanEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In HiRes 120 sound processing, the spectral bands are created by precisely varying the proportion of current delivered simultaneously to adjacent electrodes through active current steering. The purpose of this study was to examine performance of native Korean speakers with HiRes 120. Eleven adults with postlinguial hearing loss participated in the study. The difference between baseline and three-month HiRes 120 performance was significant for all tests (p < 0.05). For monosyllabic words, eight subjects obtained higher scores with HiRes 120. For the Hearing in Noise Test (HINT), ten subjects obtained higher scores with stan...
Source: Cochlear Implants International - January 6, 2009 Category: Audiology Authors: Hong-Joon Park, Seung-Chul Lee, Young-Myoung Chun, Jee-Yeon Lee Source Type: journals

Comparing auditory perception and speech production outcomes: Non-language specific assessment of auditory perception and speech production in children with cochlear implantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Language-independent assessment tools evaluate the progress of children who receive a cochlear implant, allowing large pooling of data for better access to insurers and other health care professionals. One hundred and seventeen children from centres in the United Kingdom, Iran and Turkey were assessed on two measures over a five-year test interval. There is a significant improvement over time for the Categories of Auditory Performance (CAP) and Speech Intelligibility Rating (SIR) measures. There was a significant difference between scores for different language groups: accounted for by the differences in age at implantatio...
Source: Cochlear Implants International - January 6, 2009 Category: Audiology Authors: Lucy Phillips, Saeid Hassanzadeh, Julie Kosaner, Jane Martin, Martina Deibl, Ilona Anderson Source Type: journals

Bimodal fitting or bilateral implantation?Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper summarises findings from studies that evaluated the benefits of bimodal fitting (combining a hearing aid and a cochlear implant in opposite ears) or bilateral cochlear implantation, relative to unilateral implantation, for children (Ching et al., 2007). On average, the size of binaural speech intelligibility advantages due to redundancy and head shadow was similar for the two bilateral conditions. An added advantage of bimodal fitting was that the low-frequency cues provided by acoustic hearing complemented the high-frequency cues conveyed by electric hearing in perception of voice and music. Some children with ...
Source: Cochlear Implants International - December 11, 2008 Category: Audiology Authors: Teresa YC Ching, Robyn Massie, Emma Van Wanrooy, Emma Rushbrooke, Colleen Psarros Source Type: journals

Early language outcomes of children with cochlear implants: Interim findings of the NAL study on longitudinal outcomes of children with hearing impairmentEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper reports interim findings of a prospective study that examines longitudinal outcomes of early- and later-identified children with hearing impairment in Australia. Eighty-seven children with cochlear implants were assessed using the Preschool Language Scale at one or more intervals. Results demonstrated that children who received a cochlear implant before 12 months of age developed normal language skills and at a rate that is comparable to normal-hearing children. Children who received later implantation performed at two standard deviations below the normative mean. These results are preliminary, as there are curr...
Source: Cochlear Implants International - December 9, 2008 Category: Audiology Authors: Teresa YC Ching, Harvey Dillon, Julia Day, Kathryn Crowe, Lynda Close, Kylie Chisholm, Tracy Hopkins Source Type: journals

Jacobson's nerve clues to the round window nicheEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The objectives of this study were to depict the distance from Jacobson's nerve to the lip of the round window niche, and how this distance may relate to orientation of the manubrium as viewed through the external ear canal. Also, are these distances related to mastoid pneumatisation size? The study involved post-mortem anatomic dissection of 41 bequeathed adult crania (82 temporal bones). Viewing with an operative microscope, distances were measured with a fenestrometer-type instrument. Mastoid sizes were determined radiographically. Jacobson's nerve was identifiable in 81 of 82 temporal bones. Distances from Jacobson's ne...
Source: Cochlear Implants International - December 3, 2008 Category: Audiology Authors: N Wendell Todd Source Type: journals

Children with cochlear implants: The communication journeyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This study, following on from two earlier studies, looked in depth at the experiences of 12 families. It finds that parents choose the most effective way of communicating with their child but retain as their goal, the development of oral communication skills. For many this is a journey in which different approaches are utilised at various stages in the child's development. Copyright © 2008 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - November 25, 2008 Category: Audiology Authors: Alexandra Wheeler, Sue M Archbold, Tim Hardie, Linda M Watson Source Type: journals

Correlation between intra-operative high rate neural response telemetry measurements and behaviourally obtained threshold and comfort levels in patients using Nucleus 24 cochlear implantsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The correlation between high rate 250 Hz intra-operative threshold neural response telemetry (t-NRT) with behaviourally obtained psychophysical threshold (T) and comfort (C) levels of the most recent and stable maps of 90 consecutive cochlear implantees using Cochlear Implant 24 Mini (CI 24 M) (M: F - 26:19), aged between two and 60 years with a mean age of 9.61 ±?12.07, was studied. The intra-operative t-NRT levels were seen to fall between the T and C levels and a good correlation was found between t-NRT and T and C levels (r = 0.327 at p < 0.005 for the T level and r = 0.648 at p < 0.001 for C level vs intra-operative ...
Source: Cochlear Implants International - November 24, 2008 Category: Audiology Authors: R Mittal, SS Panwar Source Type: journals

Cochlear implantation in children with keratitis-ichthyosis-deafness (KID) syndrome: outcomes in three casesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Three children with keratitis-ichthyosis-deafness (KID) syndrome received cochlear implants at the Royal Victorian Eye and Ear Hospital. KID syndrome is a rare genodermatosis associated with mutation of the connexin-26 gene with characteristics affecting skin, hair, vision and hearing. Ichthyotic involvement of the ear canal epithelium and associated non-erosive keratosis obturans complicate hearing assessment and aid fitting. The tendency to eczematous dermatitis and otitis media is an additional problem with cochlear implantation. All cases have required additional medical management, however the outcomes show that the c...
Source: Cochlear Implants International - November 21, 2008 Category: Audiology Authors: Elizabeth J Barker, Robert JS Briggs Source Type: journals

Extradural haematoma presenting as a contralateral sixth nerve palsy after cochlear implantationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Intracranial complications after cochlear implantation are rare. The authors present the case of a 13 month old boy with a contralateral abducens nerve palsy following cochlear implantation that led to the diagnosis of an extradural haematoma on computerised tomography scanning. The abducens palsy resolved after evacuation of the haematoma and the patient made an excellent recovery. The literature is reviewed and the mechanism of injury discussed. Copyright © 2008 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)
Source: Cochlear Implants International - November 19, 2008 Category: Audiology Authors: JP Barraclough, K Pearman, G Solanki Source Type: journals

Long-term use of cochlear implant systems in paediatric recipients and factors contributing to non-useEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In conclusion, this study of 138 children showed very high levels of full-time use seven years after implantation. Factors linked with full-time use seven years after implantation were early implantation, oral mode of communication and mainstream educational placement. Additional difficulties were not significant. Psycho-social issues such as family and educational support appeared to be important in facilitating continued use of the implant system. Non-use may occur after several years of use and in this group non-use followed a fluctuating pattern of use over time. The regular monitoring of device use may enable cochlear...
Source: Cochlear Implants International - October 31, 2008 Category: Audiology Authors: Sue M. Archbold, Thomas P. Nikolopoulos, Hazel Lloyd-Richmond Source Type: journals

How we do it: Clinical management of the child receiving a second, bilateral cochlear implantEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This article describes how the situation of the family considering a second implant is different, and how the decision to be made differs from that for a first implant. The information specific to sequential implants that should be provided so families can make an informed decision is reviewed. Programming issues unique to sequential bilateral cochlear implants are discussed. Finally, information is provided on how children may respond post-operatively, and what can be done to promote bilateral device use and the development of listening skills with the new implant. Copyright © 2008 John Wiley & Sons, Ltd. (Source: Cochle...
Source: Cochlear Implants International - October 24, 2008 Category: Audiology Authors: Karyn Louise Galvin, Jaime Roanne Leigh, Kathryn Clare Hughes Source Type: journals