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Ear and Hearing

Nathaniel J Spencer, Kate Helms Tillery, Christopher A Brown
OBJECTIVES: "Channel-linked" and "multi-band" front-end automatic gain control (AGC) were examined as alternatives to single-band, channel-unlinked AGC in simulated bilateral cochlear implant (CI) processing. In channel-linked AGC, the same gain control signal was applied to the input signals to both of the two CIs ("channels"). In multi-band AGC, gain control acted independently on each of a number of narrow frequency regions per channel. DESIGN: Speech intelligibility performance was measured with a single target (to the left, at -15 or -30º) and a single, symmetrically-opposed masker (to the right) at a signal-to-noise ratio (SNR) of -2 decibels...
September 10, 2018: Ear and Hearing
Renee M Banakis Hartl, James R Easter, Mohamed A Alhussaini, Daniel J Tollin, Herman A Jenkins
OBJECTIVES: Active middle ear implants (AMEI) have been used to treat hearing loss in patients for whom conventional hearing aids are unsuccessful for varied biologic or personal reasons. Several studies have discussed feedback as a potential complication of AMEI usage, though the feedback pathway is not well understood. While reverse propagation of an acoustic signal through the ossicular chain and tympanic membrane constitutes an air-conducted source of feedback, the implanted nature of the device microphone near the mastoid cortex suggests that bone conduction pathways may potentially be another significant factor...
September 7, 2018: Ear and Hearing
Seong Min Robyn Choi, Joseph Kei, Wayne J Wilson
OBJECTIVES: This study aimed to investigate hearing and auditory processing ability in primary school children with learning difficulties (LD). DESIGN: A nonrandomized, cross-sectional single measure research design was used. A total of 486 children, aged 7.7 to 10.8 years and attending years 3 and 4 in six primary schools, were classified as having an LD (n = 67) or being typically developing (TD, n = 419). This classification was based on a Learning Score generated from their school report results and National Assessment Program - Literacy and Numeracy scores...
September 5, 2018: Ear and Hearing
Tatyana Elizabeth Fontenot, Christopher Kenneth Giardina, Megan T Dillon, Meredith A Rooth, Holly F Teagle, Lisa R Park, Kevin David Brown, Oliver F Adunka, Craig A Buchman, Harold C Pillsbury, Douglas C Fitzpatrick
OBJECTIVES: Variability in speech perception outcomes with cochlear implants remains largely unexplained. Recently, electrocochleography, or measurements of cochlear potentials in response to sound, has been used to assess residual cochlear function at the time of implantation. Our objective was to characterize the potentials recorded preimplantation in subjects of all ages, and evaluate the relationship between the responses, including a subjective estimate of neural activity, and speech perception outcomes...
August 30, 2018: Ear and Hearing
Stephanie K Sayler, Peter M Rabinowitz, Deron Galusha, Kan Sun, Richard L Neitzel
OBJECTIVES: This study utilized personal noise measurements and fit-testing to evaluate the association between noise exposures and personal attenuation rating (PAR) values among participating workers, and second, to compare the attenuated exposure levels received by the workers and the British Standards Institute's recommended noise exposure range of 70 to 80 dBA. DESIGN: We measured hearing protection device (HPD) attenuation among a sample of 91 workers at 2 US metal manufacturing facilities, through performance of personal noise dosimetry measurements and HPD fit-testing over multiple work shifts...
August 28, 2018: Ear and Hearing
Niraj Kumar Singh, Nainitha Kizhake Keloth, Sachchidanand Sinha
OBJECTIVE: There is a growing concern among the scientific community about the possible detrimental effects of signal levels used for eliciting vestibular evoked myogenic potentials (VEMPs) on hearing. A few recent studies showed temporary reduction in amplitude of otoacoustic emissions (OAE) after VEMP administration. Nonetheless, these studies used higher stimulus levels (133 and 130 dB peak equivalent sound pressure level [pe SPL]) than the ones often used (120 to 125 dB pe SPL) for clinical recording of VEMP...
August 24, 2018: Ear and Hearing
Yanxia Zhao, Jingsong Li, Meibian Zhang, Yao Lu, Hongwei Xie, Yu Tian, Wei Qiu
OBJECTIVES: To demonstrate the feasibility of developing machine learning models for the prediction of hearing impairment in humans exposed to complex non-Gaussian industrial noise. DESIGN: Audiometric and noise exposure data were collected on a population of screened workers (N = 1,113) from 17 factories located in Zhejiang province, China. All the subjects were exposed to complex noise. Each subject was given an otologic examination to determine their pure-tone hearing threshold levels and had their personal full-shift noise recorded...
August 23, 2018: Ear and Hearing
Kimberley Novis, Steven Bell
OBJECTIVES: Auditory brainstem responses (ABRs) are commonly generated using simple, transient stimuli (e.g., clicks or tone bursts). While resulting waveforms are undeniably valuable clinical tools, they are unlikely to be representative of responses to more complex, behaviorally relevant sounds such as speech. There has been interest in the use of more complex stimuli to elicit the ABR, with considerable work focusing on the use of synthetically generated consonant-vowel (CV) stimuli...
August 23, 2018: Ear and Hearing
Sandeep A Phatak, Douglas S Brungart, Danielle J Zion, Ken W Grant
OBJECTIVE: The clinical evaluation of hearing loss, using a pure-tone audiogram, is not adequate to assess the functional hearing capabilities (or handicap) of a patient, especially the speech-in-noise communication difficulties. The primary objective of this study was to measure the effect of elevated hearing thresholds on the recognition performance in various functional speech-in-noise tests that cover acoustic scenes of different complexities and to identify the subset of tests that (a) were sensitive to individual differences in hearing thresholds and (b) provide complementary information to the audiogram...
August 21, 2018: Ear and Hearing
Ursula M Findlen, Gina M Hounam, Emily Alexy, Oliver F Adunka
OBJECTIVE: A quality improvement study was completed to assess the impact of three clinical practice changes on the timing of diagnosis and intervention for congenital hearing loss. DESIGN: A retrospective chart review was conducted for 800 infants evaluated for congenital hearing loss before and after implementing three clinical practice changes: the use of Kalman-weighted signal averaging for auditory brainstem response testing, a tone burst-prioritized testing protocol, and expediting scheduling of initial assessment...
August 21, 2018: Ear and Hearing
Benjamin J Kirby, Meredith Spratford, Kelsey E Klein, Ryan W McCreery
OBJECTIVES: Spectral ripple discrimination tasks have received considerable interest as potential clinical tools for use with adults and children with hearing loss. Previous results have indicated that performance on ripple tasks is affected by differences in aided audibility [quantified using the Speech Intelligibility Index, or Speech Intelligibility Index (SII)] in children who wear hearing aids and that ripple thresholds tend to improve over time in children with and without hearing loss...
August 20, 2018: Ear and Hearing
Elizabeth M Fitzpatrick, Doug Coyle, Isabelle Gaboury, Andrée Durieux-Smith, JoAnne Whittingham, Viviane Grandpierre, Eunjung Na, Mina Salamatmanesh
OBJECTIVE: Universal newborn hearing screening results in substantially more children with mild bilateral and unilateral hearing loss identified in the early years of life. While intervention services for children with moderate loss and greater are generally well-established, considerable uncertainty and variation surrounds the need for intervention services for children with milder losses. This study was undertaken with parents of young children with permanent mild bilateral and unilateral hearing loss to examine their preferences for characteristics associated with intervention services...
August 20, 2018: Ear and Hearing
Ghada BinKhamis, Agnès Léger, Steven L Bell, Garreth Prendergast, Martin O'Driscoll, Karolina Kluk
OBJECTIVES: The aims of this study were to systematically explore the effects of stimulus duration, background (quiet versus noise), and three consonant-vowels on speech-auditory brainstem responses (ABRs). Additionally, the minimum number of epochs required to record speech-ABRs with clearly identifiable waveform components was assessed. The purpose was to evaluate whether shorter duration stimuli could be reliably used to record speech-ABRs both in quiet and in background noise to the three consonant-vowels, as opposed to longer duration stimuli that are commonly used in the literature...
August 17, 2018: Ear and Hearing
Vasiliki Vivian Iliadou, Gail D Chermak, Doris-Eva Bamiou, Vishakha Waman Rawool, Martin Ptok, Suzanne Purdy, Benoît Jutras, Deborah Moncrieff, Tone Stokkereit Mattsson, Jeanane M Ferre, Cydney Fox, Helen Grech, Donna Geffner, Mladen Hedjever, Teri James Bellis, Ioannis Nimatoudis, Nikos Eleftheriadis, Ellen Raben Pedersen, Jeffrey Weihing, Lisa Guillory, Jane R Madell, Annette Hurley, Gail M Whitelaw, Eliane Schochat, Chrysa Spyridakou, Christos Sidiras, Hung Thai-Van, Anastasia Kostopoulou, Evelyne Veuillet, Bill Keith, Alyson Mountjoy, Nehzat Koohi, Tony Sirimanna, Carol Lau, Barbara Cone, Christiane Kiese-Himme, Maria Abramson, Rangasayee Raghunathrao, Frank E Musiek
No abstract text is available yet for this article.
August 13, 2018: Ear and Hearing
Brenda M Ryals
No abstract text is available yet for this article.
August 13, 2018: Ear and Hearing
William J Keith, Robert W Keith, Suzanne C Purdy
No abstract text is available yet for this article.
August 13, 2018: Ear and Hearing
Valerie Looi, Kate Rutledge, Tania Prvan
OBJECTIVES: The main aim of this study was to collect information on music listening and music appreciation from postlingually deafened adults who use hearing aids (HAs). It also sought to investigate whether there were any differences in music ratings from HA users with different levels of hearing loss (HL; mild, versus moderate to moderately-severe, versus severe or worse. DESIGN: An existing published questionnaire developed for cochlear implant recipients was modified for this study...
August 9, 2018: Ear and Hearing
Annie N Simpson, Lois J Matthews, Christy Cassarly, Judy R Dubno
OBJECTIVES: Although many individuals with hearing loss could benefit from intervention with hearing aids, many do not seek or delay seeking timely treatment after the onset of hearing loss. There is limited data-based evidence estimating the delay in adoption of hearing aids with anecdotal estimates ranging from 5 to 20 years. The present longitudinal study is the first to assess time from hearing aid candidacy to adoption in a 28-year ongoing prospective cohort of older adults, with the additional goal of determining factors influencing delays in hearing aid adoption, and self-reported successful use of hearing aids...
August 6, 2018: Ear and Hearing
Tina M Grieco-Calub, Maya-Simone Collins, Hillary E Snyder, Kristina M Ward
OBJECTIVES: The present study tested the effects of background speech and nonspeech noise on 5-year-old children's working memory span. DESIGN: Five-year-old typically developing children (range = 58.6 to 67.6 months; n = 94) completed a modified version of the Missing Scan Task, a missing-item working memory task, in quiet and in the presence of two types of background noise: male two-talker speech and speech-shaped noise. The two types of background noise had similar spectral composition and overall intensity characteristics but differed in whether they contained verbal content...
August 1, 2018: Ear and Hearing
Shauntelle A Cannon, Monita Chatterjee
OBJECTIVES: Emotional communication is important in children's social development. Previous studies have shown deficits in voice emotion recognition by children with moderate-to-severe hearing loss or with cochlear implants. Little, however, is known about emotion recognition in children with mild-to-moderate hearing loss. The objective of this study was to compare voice emotion recognition by children with mild-to-moderate hearing loss relative to their peers with normal hearing, under conditions in which the emotional prosody was either more or less exaggerated (child-directed or adult-directed speech, respectively)...
August 1, 2018: Ear and Hearing
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