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Ear and Hearing

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https://www.readbyqxmd.com/read/29337763/the-effect-of-simulated-interaural-frequency-mismatch-on-speech-understanding-and-spatial-release-from-masking
#1
Matthew J Goupell, Corey A Stoelb, Alan Kan, Ruth Y Litovsky
OBJECTIVE: The binaural-hearing system interaurally compares inputs, which underlies the ability to localize sound sources and to better understand speech in complex acoustic environments. Cochlear implants (CIs) are provided in both ears to increase binaural-hearing benefits; however, bilateral CI users continue to struggle with understanding speech in the presence of interfering sounds and do not achieve the same level of spatial release from masking (SRM) as normal-hearing listeners...
January 15, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29337762/tinnitus-and-auditory-perception-after-a-history-of-noise-exposure-relationship-to-auditory-brainstem-response-measures
#2
Naomi F Bramhall, Dawn Konrad-Martin, Garnett P McMillan
OBJECTIVES: To determine whether auditory brainstem response (ABR) wave I amplitude is associated with measures of auditory perception in young people with normal distortion product otoacoustic emissions (DPOAEs) and varying levels of noise exposure history. DESIGN: Tinnitus, loudness tolerance, and speech perception ability were measured in 31 young military Veterans and 43 non-Veterans (19 to 35 years of age) with normal pure-tone thresholds and DPOAEs. Speech perception was evaluated in quiet using Northwestern University Auditory Test (NU-6) word lists and in background noise using the words in noise (WIN) test...
January 15, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29337761/children-s-recognition-of-emotional-prosody-in-spectrally-degraded-speech-is-predicted-by-their-age-and-cognitive-status
#3
Anna R Tinnemore, Danielle J Zion, Aditya M Kulkarni, Monita Chatterjee
OBJECTIVES: It is known that school-aged children with cochlear implants show deficits in voice emotion recognition relative to normal-hearing peers. Little, however, is known about normal-hearing children's processing of emotional cues in cochlear implant-simulated, spectrally degraded speech. The objective of this study was to investigate school-aged, normal-hearing children's recognition of voice emotion, and the degree to which their performance could be predicted by their age, vocabulary, and cognitive factors such as nonverbal intelligence and executive function...
January 15, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29337760/using-thresholds-in-noise-to-identify-hidden-hearing-loss-in-humans
#4
Courtney L Ridley, Judy G Kopun, Stephen T Neely, Michael P Gorga, Daniel M Rasetshwane
OBJECTIVES: Recent animal studies suggest that noise-induced synaptopathy may underlie a phenomenon that has been labeled hidden hearing loss (HHL). Noise exposure preferentially damages low spontaneous-rate auditory nerve fibers, which are involved in the processing of moderate- to high-level sounds and are more resistant to masking by background noise. Therefore, the effect of synaptopathy may be more evident in suprathreshold measures of auditory function, especially in the presence of background noise...
January 15, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29309398/hearing-difficulty-is-associated-with-injuries-requiring-medical-care
#5
Paul Mick, Danielle Foley, Frank Lin, M Kathleen Pichora-Fuller
OBJECTIVE: Injuries are responsible for 11% of global disability-adjusted life years. Hearing difficulty may be a modifiable risk factor for injury. The primary aim was to determine whether subjective hearing difficulty is associated with increased incidence of injuries (all-type, workplace, and nonworkplace) serious enough to require health care among Americans aged 18 years and older. The secondary aim was to determine whether hearing difficulty is associated with increased use of health care for injuries...
January 5, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29298165/letter-to-the-editor-johnson-j-a-xu-j-cox-r-m-2017-impact-of-hearing-aid-technology-on-outcomes-in-daily-life-iii-localization-ear-hear-38-746-759
#6
Anna C Diedesch, Frederick J Gallun
No abstract text is available yet for this article.
January 2, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29298164/neural-activity-during-mental-rotation-in-deaf-signers-the-influence-of-long-term-sign-language-experience
#7
Hong-Bo Le, Hui-Hong Zhang, Qiu-Lin Wu, Jiong Zhang, Jing-Jing Yin, Shu-Hua Ma
OBJECTIVES: Mental rotation is the brain's visuospatial understanding of what objects are and where they belong. Previous research indicated that deaf signers showed behavioral enhancement for nonlinguistic visual tasks, including mental rotation. In this study, we investigated the neural difference of mental rotation processing between deaf signers and hearing nonsigners using blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI). DESIGN: The participants performed a block-designed experiment, consisting of alternating blocks of comparison and rotation periods, separated by a baseline or fixation period...
January 2, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29298163/response-to-letter-to-the-editor-re-johnson-j-xu-j-cox-r-2017-impact-of-hearing-aid-technology-on-outcomes-in-daily-life-iii-localization-ear-hear-38-746-759
#8
Jani A Johnson, Jingjing Xu, Robyn M Cox
No abstract text is available yet for this article.
January 2, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29287039/effect-of-blast-injury-on-auditory-localization-in-military-service-members
#9
Lina R Kubli, Douglas Brungart, Jerry Northern
OBJECTIVES: Among the many advantages of binaural hearing are the abilities to localize sounds in space and to attend to one sound in the presence of many sounds. Binaural hearing provides benefits for all listeners, but it may be especially critical for military personnel who must maintain situational awareness in complex tactical environments with multiple speech and noise sources. There is concern that Military Service Members who have been exposed to one or more high-intensity blasts during their tour of duty may have difficulty with binaural and spatial ability due to degradation in auditory and cognitive processes...
December 27, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29287038/effects-of-amplification-on-neural-phase-locking-amplitude-and-latency-to-a-speech-syllable
#10
Kimberly A Jenkins, Calli Fodor, Alessandro Presacco, Samira Anderson
OBJECTIVE: Older adults often have trouble adjusting to hearing aids when they start wearing them for the first time. Probe microphone measurements verify appropriate levels of amplification up to the tympanic membrane. Little is known, however, about the effects of amplification on auditory-evoked responses to speech stimuli during initial hearing aid use. The present study assesses the effects of amplification on neural encoding of a speech signal in older adults using hearing aids for the first time...
December 27, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29280917/long-term-variability-of-distortion-product-otoacoustic-emissions-in-infants-and-children-and-its-relation-to-pediatric-ototoxicity-monitoring
#11
Dawn Konrad-Martin, Kristin Knight, Garnett P McMillan, Laura E Dreisbach, Elsa Nelson, Marilyn Dille
OBJECTIVE: Distortion-product otoacoustic emissions (DPOAEs) provide a rapid, noninvasive measure of outer hair cell damage associated with chemotherapy and are a key component of pediatric ototoxicity monitoring. Serial monitoring of DPOAE levels in reference to baseline measures is one method for detecting ototoxic damage. Interpreting DPOAE findings in this context requires that test-retest differences be considered in relation to normal variability, data which are lacking in children...
December 26, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29271831/verbal-learning-and-memory-after-cochlear-implantation-in-postlingually-deaf-adults-some-new-findings-with-the-cvlt-ii
#12
David B Pisoni, Arthur Broadstock, Taylor Wucinich, Natalie Safdar, Kelly Miller, Luis R Hernandez, Kara Vasil, Lauren Boyce, Alexandra Davies, Michael S Harris, Irina Castellanos, Huiping Xu, William G Kronenberger, Aaron C Moberly
OBJECTIVES: Despite the importance of verbal learning and memory in speech and language processing, this domain of cognitive functioning has been virtually ignored in clinical studies of hearing loss and cochlear implants in both adults and children. In this article, we report the results of two studies that used a newly developed visually based version of the California Verbal Learning Test-Second Edition (CVLT-II), a well-known normed neuropsychological measure of verbal learning and memory...
December 21, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29256920/visual-acuity-and-cognition-in-older-adults-with-and-without-hearing-loss-evidence-for-late-life-sensory-compensation
#13
Markus Wettstein, Hans-Werner Wahl, Vera Heyl
OBJECTIVES: Relationships between cognitive and sensory functioning become stronger with advancing age, and the debate on underlying mechanisms continues. Interestingly, the potential mechanism of compensation by the unaffected sensory modality has so far been investigated in younger age groups with congenital sensory impairment but not in older adults with late-life sensory loss. We compared associations between visual acuity and cognitive functioning in hearing-impaired older adults (HI), and sensory-unimpaired controls (UI)...
December 16, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29252979/looking-behavior-and-audiovisual-speech-understanding-in-children-with-normal-hearing-and-children-with-mild-bilateral-or-unilateral-hearing-loss
#14
Dawna E Lewis, Nicholas A Smith, Jody L Spalding, Daniel L Valente
OBJECTIVES: Visual information from talkers facilitates speech intelligibility for listeners when audibility is challenged by environmental noise and hearing loss. Less is known about how listeners actively process and attend to visual information from different talkers in complex multi-talker environments. This study tracked looking behavior in children with normal hearing (NH), mild bilateral hearing loss (MBHL), and unilateral hearing loss (UHL) in a complex multi-talker environment to examine the extent to which children look at talkers and whether looking patterns relate to performance on a speech-understanding task...
December 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29252978/social-development-in-children-with-early-cochlear-implants-normative-comparisons-and-predictive-factors-including-bilateral-implantation
#15
Julia Z Sarant, David C Harris, Karyn L Galvin, Lisa A Bennet, Manasi Canagasabey, Peter A Busby
OBJECTIVES: There are mixed results regarding psychosocial development in children with cochlear implants (CIs) compared with children with normal hearing (NH), and the effect of bilateral CIs has not yet been investigated. This study aimed to investigate whether social development differed between NH children and those with early CIs, and to identify new predictors of psychosocial development in children with early CIs. DESIGN: The psychosocial development, cognitive and language abilities of 159 children were measured as part of a longitudinal outcomes study of children with CIs...
December 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29252977/evaluating-the-performance-of-a-visually-guided-hearing-aid-using-a-dynamic-auditory-visual-word-congruence-task
#16
Elin Roverud, Virginia Best, Christine R Mason, Timothy Streeter, Gerald Kidd
OBJECTIVES: The "visually guided hearing aid" (VGHA), consisting of a beamforming microphone array steered by eye gaze, is an experimental device being tested for effectiveness in laboratory settings. Previous studies have found that beamforming without visual steering can provide significant benefits (relative to natural binaural listening) for speech identification in spatialized speech or noise maskers when sound sources are fixed in location. The aim of the present study was to evaluate the performance of the VGHA in listening conditions in which target speech could switch locations unpredictably, requiring visual steering of the beamforming...
December 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29251690/cost-effective-hearing-conservation-regulatory-and-research-priorities
#17
Robert A Dobie
Hearing conservation programs (HCPs) mandated by the US Occupational Safety and Health Administration (OSHA) cost about $350/worker/year. Are they cost-effective? A cross-sectional model of the US adult population with and without HCPs incorporates (1) the American Medical Association's method for estimating binaural hearing impairment and whole-person impairment; (2) the model of the International Organization for Standardization (ISO) for estimating both age-related and noise-induced hearing loss; and (3) an acceptable cost of $50,000 per quality-adjusted life year...
December 14, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29251689/the-summating-potential-is-a-reliable-marker-of-electrode-position-in-electrocochleography-cochlear-implant-as-a-theragnostic-probe
#18
Victor Helmstaedter, Thomas Lenarz, Peter Erfurt, Andrej Kral, Peter Baumhoff
OBJECTIVE: For the increasing number of cochlear implantations in subjects with residual hearing, hearing preservation, and thus the prevention of implantation trauma, is crucial. A method for monitoring the intracochlear position of a cochlear implant (CI) and early indication of imminent cochlear trauma would help to assist the surgeon to achieve this goal. The aim of this study was to evaluate the reliability of the different electric components recorded by an intracochlear electrocochleography (ECochG) as markers for the cochleotopic position of a CI...
December 14, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29240567/theoretical-evaluation-and-experimental-validation-of-localized-therapeutic-hypothermia-application-to-preserve-residual-hearing-after-cochlear-implantation
#19
Ilmar Tamames, Curtis King, Chin-Yuh Huang, Fred F Telischi, Michael E Hoffer, Suhrud M Rajguru
OBJECTIVES: Cochlear implantation surgery has been shown to result in trauma to inner ear sensory structures, resulting in loss of residual hearing. Localized therapeutic hypothermia has been shown in clinical care to be a neuroprotective intervention. Previously, we have shown in an experimental model that localized hypothermia protects cochlear hair cells and residual hearing function against surgical and cochlear implantation trauma. Using experimental temperature measurements carried out in human cadaver temporal bones and a finite element model of the inner ear, the present study examined the temperature distribution of a custom-designed hypothermia delivery system in the human inner ear organs...
December 13, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29219858/the-precision-of-ecap-thresholds-derived-from-amplitude-growth-functions
#20
Jan Dirk Biesheuvel, Jeroen J Briaire, Johan H M Frijns
OBJECTIVE: An amplitude growth function (AGF) shows the amplitude of an electrically evoked compound action potential (eCAP) as a function of the stimulation current. AGFs can be used to derive the eCAP threshold, which represents the minimum amount of current needed to elicit a measurable eCAP. eCAP thresholds have been widely used clinically to, for example, assist with sound processor programming. However, no eCAP precision has been included to date. The aim of this study was to investigate the precision of eCAP thresholds and determine whether they are precise enough for clinical use...
December 6, 2017: Ear and Hearing
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