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Trends in Hearing

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https://www.readbyqxmd.com/read/28150534/evaluating-multipulse-integration-as-a-neural-health-correlate-in-human-cochlear-implant-users-relationship-to-psychometric-functions-for-detection
#1
Ning Zhou, Lixue Dong
In electrical hearing, multipulse integration (MPI) describes the rate at which detection threshold decreases with increasing stimulation rate in a fixed-duration pulse train. In human subjects, MPI has been shown to be dependent on the psychophysically estimated spread of neural excitation at a high stimulation rate, with broader spread predicting greater integration. The first aim of the present study was to replicate this finding using alternative methods for measuring MPI and spread of neural excitation...
2017: Trends in Hearing
https://www.readbyqxmd.com/read/28105890/multitasking-during-degraded-speech-recognition-in-school-age-children
#2
Tina M Grieco-Calub, Kristina M Ward, Laurel Brehm
Multitasking requires individuals to allocate their cognitive resources across different tasks. The purpose of the current study was to assess school-age children's multitasking abilities during degraded speech recognition. Children (8 to 12 years old) completed a dual-task paradigm including a sentence recognition (primary) task containing speech that was either unprocessed or noise-band vocoded with 8, 6, or 4 spectral channels and a visual monitoring (secondary) task. Children's accuracy and reaction time on the visual monitoring task was quantified during the dual-task paradigm in each condition of the primary task and compared with single-task performance...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/28091178/behavioral-assessment-of-listening-effort-using-a-dual-task-paradigm
#3
Jean-Pierre Gagné, Jana Besser, Ulrike Lemke
Published investigations ( n = 29) in which a dual-task experimental paradigm was employed to measure listening effort during speech understanding in younger and older adults were reviewed. A summary of the main findings reported in the articles is provided with respect to the participants' age-group and hearing status. Effects of different signal characteristics, such as the test modality, on dual-task outcomes are evaluated, and associations with cognitive abilities and self-report measures of listening effort are described...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/27927982/evidence-for-a-right-ear-advantage-in-newborn-hearing-screening-results
#4
Daphne Ari-Even Roth, Minka Hildesheimer, Ilan Roziner, Yael Henkin
The aim of the present study was to investigate the effect of ear asymmetry, order of testing, and gender on transient-evoked otoacoustic emission (TEOAE) pass rates and response levels in newborn hearing screening. The screening results of 879 newborns, of whom 387 (study group) passed screening successfully in only one ear in the first TEOAE screening, but passed screening successfully in both ears thereafter, and 492 (control group) who passed screening successfully in both ears in the first TEOAE, were retrospectively examined for pass rates and TEOAE characteristics...
December 6, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27888257/a-flexible-question-and-answer-task-for-measuring-speech-understanding
#5
Virginia Best, Timothy Streeter, Elin Roverud, Christine R Mason, Gerald Kidd
This report introduces a new speech task based on simple questions and answers. The task differs from a traditional sentence recall task in that it involves an element of comprehension and can be implemented in an ongoing fashion. It also contains two target items (the question and the answer) that may be associated with different voices and locations to create dynamic listening scenarios. A set of 227 questions was created, covering six broad categories (days of the week, months of the year, numbers, colors, opposites, and sizes)...
November 24, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27837052/individual-differences-in-auditory-brainstem-response-wave-characteristics-relations-to-different-aspects-of-peripheral-hearing-loss
#6
Sarah Verhulst, Anoop Jagadeesh, Manfred Mauermann, Frauke Ernst
Little is known about how outer hair cell loss interacts with noise-induced and age-related auditory nerve degradation (i.e., cochlear synaptopathy) to affect auditory brainstem response (ABR) wave characteristics. Given that listeners with impaired audiograms likely suffer from mixtures of these hearing deficits and that ABR amplitudes have successfully been used to isolate synaptopathy in listeners with normal audiograms, an improved understanding of how different hearing pathologies affect the ABR source generators will improve their sensitivity in hearing diagnostics...
November 11, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27837051/perception-of-sung-speech-in-bimodal-cochlear-implant-users
#7
Joseph D Crew, John J Galvin, Qian-Jie Fu
Combined use of a hearing aid (HA) and cochlear implant (CI) has been shown to improve CI users' speech and music performance. However, different hearing devices, test stimuli, and listening tasks may interact and obscure bimodal benefits. In this study, speech and music perception were measured in bimodal listeners for CI-only, HA-only, and CI + HA conditions, using the Sung Speech Corpus, a database of monosyllabic words produced at different fundamental frequencies. Sentence recognition was measured using sung speech in which pitch was held constant or varied across words, as well as for spoken speech...
November 11, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27815547/a-profiling-system-for-the-assessment-of-individual-needs-for-rehabilitation-with-hearing-aids
#8
Wouter A Dreschler, I de Ronde-Brons
This study focuses on the development of a profiling system to specify the needs of hearing-aid candidates. As a basis for the profile of compensation needs, we used a slightly modified version of the Amsterdam Inventory of Disability and Handicap, combined with the well-known Client-Oriented Scale of Improvement (COSI). The first questionnaire results in scores for six audiological dimensions: detection, speech in quiet, speech in noise, localization, focus or discrimination, and noise tolerance. The goal of this study was to determine whether the six dimensions derived from the disability questionnaire are appropriate to also categorize individual COSI targets...
November 4, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27815546/spectrotemporal-modulation-sensitivity-as-a-predictor-of-speech-reception-performance-in-noise-with-hearing-aids
#9
Joshua G W Bernstein, Henrik Danielsson, Mathias Hällgren, Stefan Stenfelt, Jerker Rönnberg, Thomas Lunner
The audiogram predicts <30% of the variance in speech-reception thresholds (SRTs) for hearing-impaired (HI) listeners fitted with individualized frequency-dependent gain. The remaining variance could reflect suprathreshold distortion in the auditory pathways or nonauditory factors such as cognitive processing. The relationship between a measure of suprathreshold auditory function-spectrotemporal modulation (STM) sensitivity-and SRTs in noise was examined for 154 HI listeners fitted with individualized frequency-specific gain...
November 4, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27742880/aging-and-spectro-temporal-integration-of-speech
#10
John H Grose, Heather L Porter, Emily Buss
The purpose of this study was to determine the effects of age on the spectro-temporal integration of speech. The hypothesis was that the integration of speech fragments distributed over frequency, time, and ear of presentation is reduced in older listeners-even for those with good audiometric hearing. Younger, middle-aged, and older listeners (10 per group) with good audiometric hearing participated. They were each tested under seven conditions that encompassed combinations of spectral, temporal, and binaural integration...
October 14, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27733672/social-context-and-hearing-aid-adoption
#11
Gurjit Singh, Stefan Launer
Hearing rehabilitation tends to focus on the influence of intraindividual factors and concepts such as readiness for change and health beliefs. In contrast, less is known about the role of social context and the potential role of significant others on hearing aid adoption. This explorative retrospective study investigated whether hearing aid adoption is associated with significant other attendance at audiology appointments. The study sample consisted of 33,933 and 27,031 individuals who attended appointments either alone or with a significant other, respectively (n = 60,964)...
October 12, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27698261/a-binaural-grouping-model-for-predicting-speech-intelligibility-in-multitalker-environments
#12
Jing Mi, H Steven Colburn
Spatially separating speech maskers from target speech often leads to a large intelligibility improvement. Modeling this phenomenon has long been of interest to binaural-hearing researchers for uncovering brain mechanisms and for improving signal-processing algorithms in hearing-assistive devices. Much of the previous binaural modeling work focused on the unmasking enabled by binaural cues at the periphery, and little quantitative modeling has been directed toward the grouping or source-separation benefits of binaural processing...
October 3, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27698260/rapid-release-from-listening-effort-resulting-from-semantic-context-and-effects-of-spectral-degradation-and-cochlear-implants
#13
Matthew Winn
People with hearing impairment are thought to rely heavily on context to compensate for reduced audibility. Here, we explore the resulting cost of this compensatory behavior, in terms of effort and the efficiency of ongoing predictive language processing. The listening task featured predictable or unpredictable sentences, and participants included people with cochlear implants as well as people with normal hearing who heard full-spectrum/unprocessed or vocoded speech. The crucial metric was the growth of the pupillary response and the reduction of this response for predictable versus unpredictable sentences, which would suggest reduced cognitive load resulting from predictive processing...
October 3, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27698259/the-prediction-of-speech-recognition-in-noise-with-a-semi-implantable-bone-conduction-hearing-system-by-external-bone-conduction-stimulation-with-headband-a-prospective-study
#14
Friedrich Ihler, Jenny Blum, Max-Ulrich Berger, Bernhard G Weiss, Christian Welz, Martin Canis
Semi-implantable transcutaneous bone conduction devices are treatment options for conductive and mixed hearing loss (CHL/MHL). For counseling of patients, realistic simulation of the functional result is desirable. This study compared speech recognition in noise with a semi-implantable transcutaneous bone conduction device to external stimulation with a bone conduction device fixed by a headband. Eight German-language adult patients were enrolled after a semi-implantable transcutaneous bone conduction device (Bonebridge, Med-El) was implanted and fitted...
October 3, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27698258/time-varying-distortions-of-binaural-information-by-bilateral-hearing-aids-effects-of-nonlinear-frequency-compression
#15
Andrew D Brown, Francisco A Rodriguez, Cory D F Portnuff, Matthew J Goupell, Daniel J Tollin
In patients with bilateral hearing loss, the use of two hearing aids (HAs) offers the potential to restore the benefits of binaural hearing, including sound source localization and segregation. However, existing evidence suggests that bilateral HA users' access to binaural information, namely interaural time and level differences (ITDs and ILDs), can be compromised by device processing. Our objective was to characterize the nature and magnitude of binaural distortions caused by modern digital behind-the-ear HAs using a variety of stimuli and HA program settings...
October 3, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27698257/subjective-listening-effort-and-electrodermal-activity-in-listening-situations-with-reverberation-and-noise
#16
Inga Holube, Kristina Haeder, Christina Imbery, Reinhard Weber
Disturbing factors like reverberation or ambient noise can impair speech recognition and raise the listening effort needed for successful communication in daily life. Situations with high listening effort are thought to result in increased stress for the listener. The aim of this study was to explore possible measures to determine listening effort in situations with varying background noise and reverberation. For this purpose, subjective ratings of listening effort, speech recognition, and stress level, together with the electrodermal activity as a measure of the autonomic stress reaction, were investigated...
October 3, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27659487/perception-of-interaural-phase-differences-with-envelope-and-fine-structure-coding-strategies-in-bilateral-cochlear-implant-users
#17
Stefan Zirn, Susan Arndt, Antje Aschendorff, Roland Laszig, Thomas Wesarg
The ability to detect a target signal masked by noise is improved in normal-hearing listeners when interaural phase differences (IPDs) between the ear signals exist either in the masker or in the signal. To improve binaural hearing in bilaterally implanted cochlear implant (BiCI) users, a coding strategy providing the best possible access to IPD is highly desirable. In this study, we compared two coding strategies in BiCI users provided with CI systems from MED-EL (Innsbruck, Austria). The CI systems were bilaterally programmed either with the fine structure processing strategy FS4 or with the constant rate strategy high definition continuous interleaved sampling (HDCIS)...
September 22, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27641682/clinically-paired-electrodes-are-often-not-perceived-as-pitch-matched
#18
Justin M Aronoff, Monica Padilla, Julia Stelmach, David M Landsberger
For bilateral cochlear implant (CI) patients, electrodes that receive the same frequency allocation often stimulate locations in the left and right ear that do not yield the same perceived pitch, resulting in a pitch mismatch. This pitch mismatch may be related to degraded binaural abilities. Pitch mismatches have been found for some bilateral CI users and the goal of this study was to determine whether pitch mismatches are prevalent in bilateral CI patients, including those with extensive experience with bilateral CIs...
September 18, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27641681/a-detection-theoretic-analysis-of-auditory-streaming-and-its-relation-to-auditory-masking
#19
An-Chieh Chang, Robert Lutfi, Jungmee Lee, Inseok Heo
Research on hearing has long been challenged with understanding our exceptional ability to hear out individual sounds in a mixture (the so-called cocktail party problem). Two general approaches to the problem have been taken using sequences of tones as stimuli. The first has focused on our tendency to hear sequences, sufficiently separated in frequency, split into separate cohesive streams (auditory streaming). The second has focused on our ability to detect a change in one sequence, ignoring all others (auditory masking)...
September 18, 2016: Trends in Hearing
https://www.readbyqxmd.com/read/27604783/toward-a-diagnostic-test-for-hidden-hearing-loss
#20
Christopher J Plack, Agnès Léger, Garreth Prendergast, Karolina Kluk, Hannah Guest, Kevin J Munro
Cochlear synaptopathy (or hidden hearing loss), due to noise exposure or aging, has been demonstrated in animal models using histological techniques. However, diagnosis of the condition in individual humans is problematic because of (a) test reliability and (b) lack of a gold standard validation measure. Wave I of the transient-evoked auditory brainstem response is a noninvasive electrophysiological measure of auditory nerve function and has been validated in the animal models. However, in humans, Wave I amplitude shows high variability both between and within individuals...
September 7, 2016: Trends in Hearing
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