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https://www.readbyqxmd.com/read/29777327/intensity-discrimination-and-speech-recognition-of-cochlear-implant-users
#1
Colette M McKay, Natalie Rickard, Katherine Henshall
The relation between speech recognition and within-channel or across-channel (i.e., spectral tilt) intensity discrimination was measured in nine CI users (11 ears). Within-channel intensity difference limens (IDLs) were measured at four electrode locations across the electrode array. Spectral tilt difference limens were measured with (XIDL-J) and without (XIDL) level jitter. Only three subjects could perform the XIDL-J task with the amount of jitter required to limit use of within-channel cues. XIDLs (normalized to %DR) were correlated with speech recognition (r = 0...
May 17, 2018: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/29772954/electric-acoustic-stimulation-suppresses-tinnitus-in-a-subject-with-high-frequency-single-sided-deafness
#2
Griet Mertens, Vincent Van Rompaey, Paul Van de Heyning
BACKGROUND: A suggested solution to suppress tinnitus is to restore the normal sensory input. This is based on the auditory deprivation hypothesis. It is known that hearing aids can provide sufficient activation of the auditory nervous system and reduce tinnitus in subjects with mild to moderate hearing loss and that cochlear implantation can reduce tinnitus in subjects with severe to profound hearing loss. This applies to subjects with single-sided deafness (SSD) or bilateral hearing loss...
May 17, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29769169/severe-vertigo-after-cochlear-implantation-acute-pneumolabyrinth
#3
Erkan Karataş, Yüksel Toplu, Emrah Gündüz, İsmail Demir
No abstract text is available yet for this article.
May 17, 2018: Balkan Medical Journal
https://www.readbyqxmd.com/read/29768731/cochlear-implant-performance-in-children-deafened-by-congenital-cytomegalovirus-a-systematic-review
#4
V J C Kraaijenga, F Van Houwelingen, S F Van der Horst, J Visscher, J M L Huisman, E J Hollman, I Stegeman, A L Smit
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is a major cause of sensorineural hearing loss in children. OBJECTIVE OF REVIEW: The objective of this systematic review was to compare performance in pediatric cochlear implant users with SNHL caused by cCMV compared to non-cCMV implantees. TYPE OF REVIEW: Systematic review. SEARCH STRATEGY: Pubmed, EMBASE and the Cochrane databases were searched from inception up to May 15th 2017 for children, cochlear implant, performance and their synonyms...
May 16, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29766759/the-role-of-temporal-cues-in-voluntary-stream-segregation-for-cochlear-implant-users
#5
Andreu Paredes-Gallardo, Sara M K Madsen, Torsten Dau, Jeremy Marozeau
The role of temporal cues in sequential stream segregation was investigated in cochlear implant (CI) listeners using a delay detection task composed of a sequence of bursts of pulses (B) on a single electrode interleaved with a second sequence (A) presented on the same electrode with a different pulse rate. In half of the trials, a delay was added to the last burst of the otherwise regular B sequence and the listeners were asked to detect this delay. As a jitter was added to the period between consecutive A bursts, time judgments between the A and B sequences provided an unreliable cue to perform the task...
January 2018: Trends in Hearing
https://www.readbyqxmd.com/read/29764788/periosteal-flap-in-cochlear-implantation-how-i-do-it
#6
Yasser Ahmed Fouad, Thomas Roland
This clinical report describes and evaluates a novel periosteal flap design. This technique was applied in 26 patients who underwent cochlear implantation surgery at two tertiary referral centers. No complications were observed during or after the surgery. Additionally, there was no evidence of device migration, wound infection, wound hematoma, or delayed wound healing. Notably, the mastoid emissary vein was intact in all cases. In conclusion, this modified anterior-based periosteal flap is a safe procedure and is aimed at avoiding mastoid emissary vein bleeding and allowing complete repositioning of the periosteum over the implanted device...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29764777/comparison-of-social-interaction-between-cochlear-implanted-children-with-normal-intelligence-undergoing-auditory-verbal-therapy-and-normal-hearing-children-a-pilot-study
#7
Leila Monshizadeh, Roshanak Vameghi, Firoozeh Sajedi, Fariba Yadegari, Seyed Basir Hashemi, Petra Kirchem, Fatemeh Kasbi
OBJECTIVE: A cochlear implant is a device that helps hearing-impaired children by transmitting sound signals to the brain and helping them improve their speech, language, and social interaction. Although various studies have investigated the different aspects of speech perception and language acquisition in cochlear-implanted children, little is known about their social skills, particularly Persian-speaking cochlear-implanted children. Considering the growing number of cochlear implants being performed in Iran and the increasing importance of developing near-normal social skills as one of the ultimate goals of cochlear implantation, this study was performed to compare the social interaction between Iranian cochlear-implanted children who have undergone rehabilitation (auditory verbal therapy) after surgery and normal-hearing children...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29764776/vestibulo-cochlear-function-after-cochlear-implantation-in-patients-with-meniere-s-disease
#8
Raquel Manrique-Huarte, Diego Calavia, Laura Alvarez-Gomez, Alicia Huarte, Nicolás Perez-Fernández, Manuel Manrique
OBJECTIVES: To measure the auditory (pure tone audiometry and word recognition scores) and vestibular (video head impulse test and vestibular myogenic potentials) outcomes in patients diagnosed with Meniere's disease (MD) who underwent cochlear implantation. MATERIAL AND METHODS: This prospective study included 23 cochlear implant users with MD and 29 patients diagnosed with far-advanced otosclerosis (the control group). RESULTS: The preoperative mean pure tone average thresholds were 99 and 122...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29764775/predicting-round-window-visibility-during-cochlear-implantation-using-high-resolution-ct-scan
#9
Saad Elzayat, Mahmoud Mandour, Rasha Lotfy, Ali Mahrous
OBJECTIVES: To predict round window niche (RWN) visibility using high-resolution computed tomography (HRCT). MATERIALS AND METHODS: We retrospectively reviewed the pre-surgical axial HRCT scan of 110 patients who underwent cochlear implantation and compared the CT visibility of RWN with the intraoperative findings by reviewing the operative notes and replaying the surgical video recording. The shape of RWN was determined using the HRCT slice with maximum RWN visibility...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29764773/cochlear-implant-electrode-array-from-partial-to-full-insertion-in-non-human-primate-model
#10
Raquel Manrique-Huarte, Diego Calavia, Maria Antonia Gallego, Manuel Manrique
OBJECTIVES: To determine the feasibility of progressive insertion (two sequential surgeries: partial to full insertion) of an electrode array and to compare functional outcomes. MATERIAL AND METHODS: 8 normal-hearing animals (Macaca fascicularis (MF)) were included. A 14 contact electrode array, which is suitably sized for the MF cochlea was partially inserted (PI) in 16 ears. After 3 months of follow-up revision surgery the electrode was advanced to a full insertion (FI) in 8 ears...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29763442/platinum-corrosion-products-from-electrode-contacts-of-human-cochlear-implants-induce-cell-death-in-cell-culture-models
#11
Kirsten Wissel, Gudrun Brandes, Nils Pütz, Gian Luigi Angrisani, Jan Thieleke, Thomas Lenarz, Martin Durisin
Despite the technological progress made with cochlear implants (CI), impedances and their diagnosis remain a focus of interest. Increases in impedance have been related to technical defects of the electrode as well as inflammatory and/or fibrosis along the electrode. Recent studies have demonstrated highly increased impedances as the result of corroded platinum (Pt) electrode contacts. This in vitro study examined the effects of Pt ions and compounds generated by corrosion of the electrode contacts of a human CI on cell metabolism...
2018: PloS One
https://www.readbyqxmd.com/read/29761963/-research-on-spectrum-feature-of-speech-processing-strategy-for-cochlear-implant
#12
Yousheng Chen, Jian Wang, Weifang Chen, Mingxiang Guan
Cochlear implant (CI) in present Chinese environment will lose pitch information and result in low speech recognition. In order to research Chinese feature-based speech processing strategy for cochlear implant contrapuntally and to improve the speech recognition for CI recipients, we improve the CI front-end signal acquisition platform and research the signal features. Our search includes the waveform, spectrogram, energy intensity, pitch and formant parameters for different speech processing strategies of cochlear implant...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29761951/-research-on-cortical-cross-modal-reorganization-of-children-with-congenital-severe-deafness-after-cochlear-implant
#13
Xianjun Wang, Maojin Liang, Junpeng Zhang, Hua Huang, Yiqing Zheng
Cochlear implant (CI) is the only method for efficacious treatment of congenital severe deafness at present. However, for children with congenital severe deafness after CI, the mechanism of the structural and functional changes of their cerebral cortex is not clear. This study was based on the cross-modal reorganization of deaf patients. Event related potential (ERP) and source localization technique were used to visualize the change of cortical activity in children with congenital severe deafness during 1-year period (0, 1, 3, 6, 9 and 12 months after CI)...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29761835/attention-to-speech-and-spoken-language-development-in-deaf-children-with-cochlear-implants-a-10-year-longitudinal-study
#14
Yuanyuan Wang, Carissa L Shafto, Derek M Houston
Early auditory/language experience plays an important role in language development. In this study, we examined the effects of severe-to-profound hearing loss and subsequent cochlear implantation on the development of attention to speech in children with cochlear implants (CIs). In addition, we investigated the extent to which attention to speech may predict spoken language development in children with CIs. We tested children with CIs and compared them to chronologically age-matched peers with normal hearing (NH) on their attention to speech at four time points post implantation; specifically, less than 1 month, 3 to 6 months, 12 months, and 18 months post implantation...
May 15, 2018: Developmental Science
https://www.readbyqxmd.com/read/29761735/spatial-release-from-masking-in-2-year-olds-with-normal-hearing-and-with-bilateral-cochlear-implants
#15
Christi L Hess, Sara M Misurelli, Ruth Y Litovsky
This study evaluated spatial release from masking (SRM) in 2- to 3-year-old children who are deaf and were implanted with bilateral cochlear implants (BiCIs), and in age-matched normal-hearing (NH) toddlers. Here, we examined whether early activation of bilateral hearing has the potential to promote SRM that is similar to age-matched NH children. Listeners were 13 NH toddlers and 13 toddlers with BiCIs, ages 27 to 36 months. Speech reception thresholds (SRTs) were measured for target speech in front (0°) and for competitors that were either Colocated in front (0°) or Separated toward the right (+90°)...
January 2018: Trends in Hearing
https://www.readbyqxmd.com/read/29761349/intracochlear-administration-of-steroids-with-a-catheter-during-human-cochlear-implantation-a-safety-and-feasibility-study
#16
Nils K Prenzler, Rolf Salcher, Max Timm, Lutz Gaertner, Thomas Lenarz, Athanasia Warnecke
Suppression of foreign body reaction, improvement of electrode-nerve interaction, and preservation of residual hearing are essential research topics in cochlear implantation. Intracochlear pharmaco- or cell-based therapies can open new horizons in this field. Local drug delivery strategies are desirable as higher local concentrations of agents can be realized and side effects can be minimized compared to systemic administrations. When administered locally at accessible, basal parts of the cochlea, drugs reach apical regions later and in much lower concentrations due to poor diffusion patterns in cochlear fluids...
May 14, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29761033/diagnosis-and-treatment-of-congenital-sensorineural-hearing-loss
#17
Divya A Chari, Dylan K Chan
Purpose of Review: The aim of this report is to review current literature regarding the work-up and management of congenital sensorineural hearing loss. Recent Findings: Diagnostic evaluation of a newborn with sensorineural hearing loss begins with a complete audiologic evaluation and comprehensive history and physical exam. This review presents a diagnostic algorithm for the work-up of congenital hearing loss, focusing on the three following modalities: cytomegalovirus testing, genetic evaluation, and imaging...
December 2017: Current Otorhinolaryngology Reports
https://www.readbyqxmd.com/read/29759935/applied-anatomy-of-round-window-and-adjacent-structures-of-tympanum-related-to-cochlear-implantation
#18
Shraddha Jain, Sagar Gaurkar, Prasad T Deshmukh, Mohnish Khatri, Sanika Kalambe, Pooja Lakhotia, Deepshikha Chandravanshi, Ashish Disawal
INTRODUCTION: Various aspects of the round window anatomy and anatomy of posterior tympanum have relevant implications for designing cochlear implant electrodes and visualizing the round window through facial recess. Preoperative information about possible anatomical variations of the round window and its relationships to the adjacent neurovascular structures can help reduce complications in cochlear implant surgery. OBJECTIVE: The present study was undertaken to assess the common variations in round window anatomy and the relationships to structures of the tympanum that may be relevant for cochlear implant surgery...
April 19, 2018: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29757801/effects-of-additional-low-pass-filtered-speech-on-listening-effort-for-noise-band-vocoded-speech-in-quiet-and-in-noise
#19
Carina Pals, Anastasios Sarampalis, Mart van Dijk, Deniz Başkent
OBJECTIVES: Residual acoustic hearing in electric-acoustic stimulation (EAS) can benefit cochlear implant (CI) users in increased sound quality, speech intelligibility, and improved tolerance to noise. The goal of this study was to investigate whether the low-pass-filtered acoustic speech in simulated EAS can provide the additional benefit of reducing listening effort for the spectrotemporally degraded signal of noise-band-vocoded speech. DESIGN: Listening effort was investigated using a dual-task paradigm as a behavioral measure, and the NASA Task Load indeX as a subjective self-report measure...
May 11, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29757550/-assessment-of-the-horizontal-semicircular-canal-function-after-cochlear-implantation-by-video-head-impulse-test-and-caloric-test
#20
Jie Zeng, Hong Ming Huang, Xiao Qian Wang, Kai Bang Zhong, Pei Na Wu
Objective: To analyze the functional change of horizontal semicircular canals after cochlear implantation. Method: Eighteen patients were enrolled in this study.Their vestibular function was evaluated by using the caloric test and video head impulse test before and one week,one month after CI surgery,respectively.The unilateral weakness(UW),slow phase velocity(SPV)in caloric test and gain in video head impulse test(vHIT-G)were observed.Caloric test was abnormal when UW>25% or SPV mean<6°/s,while vHIT was abnormal when vHIT-G<0...
January 20, 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
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