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https://www.readbyqxmd.com/read/28301390/pre-and-postoperative-binaural-unmasking-for-bimodal-cochlear-implant-listeners
#1
Benjamin M Sheffield, Gerald Schuchman, Joshua G W Bernstein
OBJECTIVES: Cochlear implants (CIs) are increasingly recommended to individuals with residual bilateral acoustic hearing. Although new hearing-preserving electrode designs and surgical approaches show great promise, CI recipients are still at risk to lose acoustic hearing in the implanted ear, which could prevent the ability to take advantage of binaural unmasking to aid speech recognition in noise. This study examined the tradeoff between the benefits of a CI for speech understanding in noise and the potential loss of binaural unmasking for CI recipients with some bilateral preoperative acoustic hearing...
March 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28301272/speech-recognition-in-bilaterally-cochlear-implanted-adults-in-tokyo-japan
#2
Yoko Ohta, Atsushi Kawano, Sachie Kawaguchi, Kyoko Shirai, Kiyoaki Tsukahara
INTRODUCTION: The clinical effects of bilateral cochlear implantation (BCI) include binaural summation and better hearing under noise conditions. This study retrospectively examined the utility of BCI compared to unilateral cochlear implantation (CI) in adults. PATIENTS AND METHODS: We investigated 34 adults who underwent BCI, comparing speech recognition between BCI and first CI under silent and noise conditions. We assessed correlations between speech recognition after first and second CIs, and between the interval from first to second CI surgery and speech recognition of second CI...
March 16, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28288475/cochlear-implantation-in-children-with-congenital-single-sided-deafness
#3
Jan Peter Thomas, Katrin Neumann, Stefan Dazert, Christiane Voelter
OBJECTIVE: To determine audiological and clinical results of cochlear implantation in children with congenital single sided deafness (SSD), with an emphasis on children implanted before and after 6 years of age. STUDY DESIGN: Retrospective study. SETTING: Tertiary referral center. SUBJECTS: Twenty one children with congenital SSD who were implanted aged 10 months to 11;3 years. INTERVENTION: Unilateral cochlear implantation...
April 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28286233/speech-intelligibility-and-subjective-benefit-in-single-sided-deaf-adults-after-cochlear-implantation
#4
Mareike Finke, Angelika Strauß-Schier, Eugen Kludt, Andreas Büchner, Angelika Illg
Treatment with cochlear implants (CIs) in single-sided deaf individuals started less than a decade ago. CIs can successfully reduce incapacitating tinnitus on the deaf ear and allow, so some extent, the restoration of binaural hearing. Until now, systematic evaluations of subjective CI benefit in post-lingually single-sided deaf individuals and analyses of speech intelligibility outcome for the CI in isolation have been lacking. For the prospective part of this study, the Bern Benefit in Single-Sided Deafness Questionnaire (BBSS) was administered to 48 single-sided deaf CI users to evaluate the subjectively perceived CI benefit across different listening situations...
March 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28269101/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#5
Erik Schebsdat, Horst Hessel, Harald Seidler, Daniel J Strauss
The so called β-wave of the binaural interaction component (BIC) in auditory brainstem responses (ABR) has been shown to be an objective measure for binaural interaction (BI). This component is the arithmetical difference between the sum of the monaurally evoked ABRs and the binaurally evoked ABR. Unfortunately, these neural responses are known to be very fragile and as a result the calculated BIC. An additional issue is, that the findings of this measurement are predominantly needed in people with hearing loss who may use hearing devices like hearing aids (HA) or cochlear implants (CI), thus they are not able to use headphones (like in conventional ABR measurements) during the detection of possible BI...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269036/assessment-of-frequency-specific-auditory-steady-state-response-using-amplitude-modulation-with-2-order-exponential-envelope
#6
Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo
This study investigated the performance of Frequency Specific Auditory Steady-State Response (FS-ASSR) detection elicited by the amplitude modulated tone with 2-order exponential envelope (AM2), using objective response detection (ORD) techniques of Spectral F-Test (SFT) and Magnitude Squared Coherence (MSC). ASSRs from 24 normal hearing adults were obtained during binaural multi-tone stimulation of amplitude-modulation (AM) and AM2 at intensities of 60, 45 and 30 dBSPL. The carrier frequencies were 500, 1000, 2000, and 4000 Hz, modulated between 77 and 105 Hz...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28253695/characterizing-the-binaural-contribution-to-speech-in-noise-reception-in-elderly-hearing-impaired-listeners
#7
Tobias Neher
To scrutinize the binaural contribution to speech-in-noise reception, four groups of elderly participants with or without audiometric asymmetry <2 kHz and with or without near-normal binaural intelligibility level difference (BILD) completed tests of monaural and binaural phase sensitivity as well as cognitive function. Groups did not differ in age, overall degree of hearing loss, or cognitive function. Analyses revealed an influence of BILD status but not audiometric asymmetry on monaural phase sensitivity, strong correlations between monaural and binaural detection thresholds, and monaural and binaural but not cognitive BILD contributions...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28241675/-association-between-single-nucleotide-polymorphismsin-human-heat-shock-protein-70-gene-and-susceptibility-to-noise-induced-hearing-loss
#8
Y H Li, G S Chen, J Jiao, W H Zhou, H Wu, G Z Gu, H L Zhang, Y X Zheng, S F Yu
Objective: To investigate the association between the single nucleotide polymorphisms (SNPs) at rs1043618, rs2075800, and rs2763979 in human heat shock protein 70 (HSP70) gene and susceptibility to noise-induced hearing loss (NIHL) . Methods: A case-control study was performed, and 5 934 workers exposed to noise in an iron and steel plant in Henan, China, who underwent physical examination from 2006 to 2015, were enrolled as study subjects. According to the criteria of binaural average high - frequency (3000, 4000, and 6000 Hz) hearing threshold≥40 dB (HL) and monauralaverage speech-frequency (500, 1000, 2000 Hz) hearing threshold≥26 dB (HL) on the basis of binauralhigh frequency loss measured by pure tone audiometry, as well as the exclusion of NIHL, a total of 286 workers were enrolled as hearing loss group; after the adjustment for sex, type of work, age (difference≤5 years) , and working years of noise exposure (difference ≤2 years) , 286 workers were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241674/-association-between-serum-magnesium-ion-level-and-risk-of-noise-induced-hearing-loss
#9
J Jiao, G Z Gu, G S Chen, Y X Zheng, H L Zhang, Q Geng, Y B Cheng, S F Yu
Objective: To investigate the association between serum magnesium ion level and risk of noise-induced hearing loss (NIHL) . Methods: Acohort study was performed for 7 445 workers exposed to noise in the steelmaking and steel rolling workshops of an iron and steel enterprise in Henan Province, China. The follow-up time was from January 1, 2006 to December 31, 2015. The workers with a binaural average high-frequency hearing threshold of ≥40 dB (HL) were enrolled as case group, and those with a binaural average high-frequency hearing threshold of <35 dB (HL) and a binaural average speech frequency of ≤25 dB (HL) were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28239188/a-framework-for-geometry-acquisition-3-d-printing-simulation-and-measurement-of-head-related-transfer-functions-with-a-focus-on-hearing-assistive-devices
#10
Stine Harder, Rasmus R Paulsen, Martin Larsen, Søren Laugesen, Michael Mihocic, Piotr Majdak
Individual head-related transfer functions (HRTFs) are essential in applications like fitting hearing-assistive devices (HADs) for providing accurate sound localization performance. Individual HRTFs are usually obtained through intricate acoustic measurements. This paper investigates the use of a three-dimensional (3D) head model for acquisition of individual HRTFs. Two aspects were investigated; whether a 3D-printed model can replace measurements on a human listener and whether numerical simulations can replace acoustic measurements...
June 2016: Computer Aided Design
https://www.readbyqxmd.com/read/28227326/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#11
Erik Schebsdat, Horst Hessel, Harald Seidler, Daniel J Strauss, Erik Schebsdat, Horst Hessel, Harald Seidler, Daniel J Strauss, Horst Hessel, Erik Schebsdat, Harald Seidler, Daniel J Strauss
The so called β-wave of the binaural interaction component (BIC) in auditory brainstem responses (ABR) has been shown to be an objective measure for binaural interaction (BI). This component is the arithmetical difference between the sum of the monaurally evoked ABRs and the binaurally evoked ABR. Unfortunately, these neural responses are known to be very fragile and as a result the calculated BIC. An additional issue is, that the findings of this measurement are predominantly needed in people with hearing loss who may use hearing devices like hearing aids (HA) or cochlear implants (CI), thus they are not able to use headphones (like in conventional ABR measurements) during the detection of possible BI...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227250/assessment-of-frequency-specific-auditory-steady-state-response-using-amplitude-modulation-with-2-order-exponential-envelope
#12
Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo, Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo, Pablo Cevallos-Larrea, Wagner Santos, Silvana M Frota, Carlos Tierra-Criollo, Antonio F Infantosi, Thobias Pereira, Roberto M Ichinose
This study investigated the performance of Frequency Specific Auditory Steady-State Response (FS-ASSR) detection elicited by the amplitude modulated tone with 2-order exponential envelope (AM(2)), using objective response detection (ORD) techniques of Spectral F-Test (SFT) and Magnitude Squared Coherence (MSC). ASSRs from 24 normal hearing adults were obtained during binaural multi-tone stimulation of amplitude-modulation (AM) and AM(2) at intensities of 60, 45 and 30 dBSPL. The carrier frequencies were 500, 1000, 2000, and 4000 Hz, modulated between 77 and 105 Hz...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28219180/-advances-in-effect-of-unilateral-auditory-deprivation-on-sound-localization
#13
J F Liu, J S Dai, N Y Wang
In patients with single-sided deafness (SSD), the interaural time difference and the interaural level difference signals are insufficient or missing, which result in the lack of sound localization ability and the decrease of speech comprehension in the noise environments. SSD can also cause the morphological and functional changes of the central auditory system, resulting in auditory deprivation. In early stage of the development, the auditory center is more susceptible to ambient environment and auditory inputs...
February 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28188882/intelligibility-in-speech-maskers-with-a-binaural-cochlear-implant-sound-coding-strategy-inspired-by-the-contralateral-medial-olivocochlear-reflex
#14
Enrique A Lopez-Poveda, Almudena Eustaquio-Martín, Joshua S Stohl, Robert D Wolford, Reinhold Schatzer, José M Gorospe, Santiago Santa Cruz Ruiz, Fernando Benito, Blake S Wilson
We have recently proposed a binaural cochlear implant (CI) sound processing strategy inspired by the contralateral medial olivocochlear reflex (the MOC strategy) and shown that it improves intelligibility in steady-state noise (Lopez-Poveda et al., 2016, Ear Hear 37:e138-e148). The aim here was to evaluate possible speech-reception benefits of the MOC strategy for speech maskers, a more natural type of interferer. Speech reception thresholds (SRTs) were measured in six bilateral and two single-sided deaf CI users with the MOC strategy and with a standard (STD) strategy...
February 7, 2017: Hearing Research
https://www.readbyqxmd.com/read/28188428/cochlear-implant-treatment-of-patients-with-single-sided-deafness-or-asymmetric-hearing-loss
#15
S Arndt, R Laszig, A Aschendorff, F Hassepass, R Beck, T Wesarg
BACKGROUND: The rehabilitation of patients with single-sided deafness (SSD) or asymmetric hearing loss can be achieved with conventional (Bi)CROS hearing aids ((Bi)CROS-HA, (Bi)CROS), bone conduction devices (BCI) or with cochlear implants (CI). Unfortunately, only small case series have been published on the treatment outcomes in SSD patients after CI surgery and there are only a few comparative studies evaluating rehabilitation outcomes. OBJECTIVE: The aim of this study was to provide evidence of successful treatment of SSD and asymmetric hearing loss with a CI compared to the untreated, monaural hearing condition and the therapy options of BCI and (Bi)CROS in a large number of patients...
February 10, 2017: HNO
https://www.readbyqxmd.com/read/28147587/use-of-a-glimpsing-model-to-understand-the-performance-of-listeners-with-and-without-hearing-loss-in-spatialized-speech-mixtures
#16
Virginia Best, Christine R Mason, Jayaganesh Swaminathan, Elin Roverud, Gerald Kidd
In many situations, listeners with sensorineural hearing loss demonstrate reduced spatial release from masking compared to listeners with normal hearing. This deficit is particularly evident in the "symmetric masker" paradigm in which competing talkers are located to either side of a central target talker. However, there is some evidence that reduced target audibility (rather than a spatial deficit per se) under conditions of spatial separation may contribute to the observed deficit. In this study a simple "glimpsing" model (applied separately to each ear) was used to isolate the target information that is potentially available in binaural speech mixtures...
January 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28132094/unilateral-hearing-loss-in-children-a-retrospective-study-and-a-review-of-the-current-literature
#17
Anna-Katharina Rohlfs, Johannes Friedhoff, Andrea Bohnert, Achim Breitfuss, Markus Hess, Frank Müller, Anke Strauch, Marianne Röhrs, Thomas Wiesner
Despite the introduction of universal newborn hearing screening (UNHS), unilateral hearing loss (UHL) is sometimes recognized late. This diagnostic delay has adverse repercussions, given the importance of binaural hearing for the development of normal auditory processing. It is incorrect to maintain that unilateral hearing is the minimum requirement for adequate speech development and that hearing aid provision is consequently unnecessary. In our retrospective study, hearing aid provision resulted in improved directional and selective hearing (quiet and noisy environments) and, compared with their chronically ill counterparts, the children in our study displayed superior health-related quality of life (HRQoL) scores in all areas...
January 28, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28123078/cortical-representation-of-interaural-time-difference-is-impaired-by-deafness-in-development-evidence-from-children-with-early-long-term-access-to-sound-through-bilateral-cochlear-implants-provided-simultaneously
#18
Vijayalakshmi Easwar, Hiroshi Yamazaki, Michael Deighton, Blake Papsin, Karen Gordon
Accurate use of interaural time differences (ITDs) for spatial hearing may require access to bilateral auditory input during sensitive periods in human development. Providing bilateral cochlear implants (CIs) simultaneously promotes symmetrical development of bilateral auditory pathways but does not support normal ITD sensitivity. Thus, although binaural interactions are established by bilateral CIs in the auditory brainstem, potential deficits in cortical processing of ITDs remain. Cortical ITD processing in children with simultaneous bilateral CIs and normal hearing with similar time-in-sound was explored in the present study...
January 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28109477/clinical-outcomes-following-cochlear-implantation-in-children-with-inner-ear-anomalies
#19
Amal Isaiah, Daniel Lee, Felicity Lenes-Voit, Melissa Sweeney, Walter Kutz, Brandon Isaacson, Peter Roland, Kenneth H Lee
OBJECTIVE: A significant proportion of children with congenital hearing loss who are candidates for cochlear implants (CIs) may have inner ear malformations (IEMs). Surgical and speech outcomes following CI in these children have not been widely reported. METHODS: The charts of children who were evaluated for a CI between 1/1/1986 and 12/31/2014 at a university-based tertiary level pediatric cochlear implant center were reviewed. Principal inclusion criteria included (i) age 1-18 years, (ii) history of bilateral severe to profound sensorineural hearing loss, and (iii) limited benefit from binaural amplification...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28079678/sound-localization-in-patients-with-congenital-unilateral-conductive-hearing-loss-with-a-transcutaneous-bone-conduction-implant
#20
Erich Vyskocil, Rudolfs Liepins, Alexandra Kaider, Michaela Blineder, Sasan Hamzavi
OBJECTIVE: There is no consensus regarding the benefit of implantable hearing aids in congenital unilateral conductive hearing loss (UCHL). This study aimed to measure sound source localization performance in patients with congenital UCHL and contralateral normal hearing who received a new bone conduction implant. STUDY DESIGN: Evaluation of within-subject performance differences for sound source localization in a horizontal plane. SETTING: Tertiary referral center...
March 2017: Otology & Neurotology
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