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Speech-in-noise

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https://www.readbyqxmd.com/read/28334187/individual-differences-in-human-auditory-processing-insights-from-single-trial-auditory-midbrain-activity-in-an-animal-model
#1
Travis White-Schwoch, Trent Nicol, Catherine M Warrier, Daniel A Abrams, Nina Kraus
Auditory-evoked potentials are classically defined as the summations of synchronous firing along the auditory neuraxis. Converging evidence supports a model whereby timing jitter in neural coding compromises listening and causes variable scalp-recorded potentials. Yet the intrinsic noise of human scalp recordings precludes a full understanding of the biological origins of individual differences in listening skills. To delineate the mechanisms contributing to these phenomena, in vivo extracellular activity was recorded from inferior colliculus in guinea pigs to speech in quiet and noise...
October 5, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/28286635/maturational-changes-in-ear-advantage-for-monaural-word-recognition-in-noise-among-listeners-with-central-auditory-processing-disorders
#2
Mohsin Ahmed Shaikh, Lisa Fox-Thomas, Denise Tucker
This study aimed to investigate differences between ears in performance on a monaural word recognition in noise test among individuals across a broad range of ages assessed for (C)APD. Word recognition scores in quiet and in speech noise were collected retrospectively from the medical files of 107 individuals between the ages of 7 and 30 years who were diagnosed with (C)APD. No ear advantage was found on the word recognition in noise task in groups less than ten years. Performance in both ears was equally poor...
February 1, 2017: Audiology Research
https://www.readbyqxmd.com/read/28286478/cortical-alpha-oscillations-predict-speech-intelligibility
#3
Andrew Dimitrijevic, Michael L Smith, Darren S Kadis, David R Moore
Understanding speech in noise (SiN) is a complex task involving sensory encoding and cognitive resources including working memory and attention. Previous work has shown that brain oscillations, particularly alpha rhythms (8-12 Hz) play important roles in sensory processes involving working memory and attention. However, no previous study has examined brain oscillations during performance of a continuous speech perception test. The aim of this study was to measure cortical alpha during attentive listening in a commonly used SiN task (digits-in-noise, DiN) to better understand the neural processes associated with "top-down" cognitive processing in adverse listening environments...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28270784/auditory-and-non-auditory-contributions-for-unaided-speech-recognition-in-noise-as-a-function-of-hearing-aid-use
#4
Anja Gieseler, Maike A S Tahden, Christiane M Thiel, Kirsten C Wagener, Markus Meis, Hans Colonius
Differences in understanding speech in noise among hearing-impaired individuals cannot be explained entirely by hearing thresholds alone, suggesting the contribution of other factors beyond standard auditory ones as derived from the audiogram. This paper reports two analyses addressing individual differences in the explanation of unaided speech-in-noise performance among n = 438 elderly hearing-impaired listeners (mean = 71.1 ± 5.8 years). The main analysis was designed to identify clinically relevant auditory and non-auditory measures for speech-in-noise prediction using auditory (audiogram, categorical loudness scaling) and cognitive tests (verbal-intelligence test, screening test of dementia), as well as questionnaires assessing various self-reported measures (health status, socio-economic status, and subjective hearing problems)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28268288/difficulty-understanding-speech-in-noise-by-the-hearing-impaired-underlying-causes-and-technological-solutions
#5
Eric W Healy, Sarah E Yoho
A primary complaint of hearing-impaired individuals involves poor speech understanding when background noise is present. Hearing aids and cochlear implants often allow good speech understanding in quiet backgrounds. But hearing-impaired individuals are highly noise intolerant, and existing devices are not very effective at combating background noise. As a result, speech understanding in noise is often quite poor. In accord with the significance of the problem, considerable effort has been expended toward understanding and remedying this issue...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264422/application-of-linear-mixed-effects-models-in-human-neuroscience-research-a-comparison-with-pearson-correlation-in-two-auditory-electrophysiology-studies
#6
Tess K Koerner, Yang Zhang
Neurophysiological studies are often designed to examine relationships between measures from different testing conditions, time points, or analysis techniques within the same group of participants. Appropriate statistical techniques that can take into account repeated measures and multivariate predictor variables are integral and essential to successful data analysis and interpretation. This work implements and compares conventional Pearson correlations and linear mixed-effects (LME) regression models using data from two recently published auditory electrophysiology studies...
February 27, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28256107/peripheral-and-central-contribution-to-the-difficulty-of-speech-in-noise-perception-in-dyslexic-children
#7
Axelle Calcus, Paul Deltenre, Cécile Colin, Régine Kolinsky
Noise typically induces both peripheral and central masking of an auditory target. Whereas the idea that a deficit of speech in noise perception is inherent to dyslexia is still debated, most studies have actually focused on the peripheral contribution to the dyslexics' difficulties of perceiving speech in noise. Here, we investigated the respective contribution of both peripheral and central noise in three groups of children: dyslexic, chronological age matched controls (CA), and reading-level matched controls (RL)...
March 2, 2017: Developmental Science
https://www.readbyqxmd.com/read/28253695/characterizing-the-binaural-contribution-to-speech-in-noise-reception-in-elderly-hearing-impaired-listeners
#8
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/28253672/contribution-of-formant-frequency-information-to-vowel-perception-in-steady-state-noise-by-cochlear-implant-users
#9
Elad Sagi, Mario A Svirsky
Cochlear implant (CI) recipients have difficulty understanding speech in noise even at moderate signal-to-noise ratios. Knowing the mechanisms they use to understand speech in noise may facilitate the search for better speech processing algorithms. In the present study, a computational model is used to assess whether CI users' vowel identification in noise can be explained by formant frequency cues (F1 and F2). Vowel identification was tested with 12 unilateral CI users in quiet and in noise. Formant cues were measured from vowels in each condition, specific to each subject's speech processor...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28226445/difficulty-understanding-speech-in-noise-by-the-hearing-impaired-underlying-causes-and-technological-solutions
#10
Eric W Healy, Sarah E Yoho, Eric W Healy, Sarah E Yoho, Sarah E Yoho, Eric W Healy
A primary complaint of hearing-impaired individuals involves poor speech understanding when background noise is present. Hearing aids and cochlear implants often allow good speech understanding in quiet backgrounds. But hearing-impaired individuals are highly noise intolerant, and existing devices are not very effective at combating background noise. As a result, speech understanding in noise is often quite poor. In accord with the significance of the problem, considerable effort has been expended toward understanding and remedying this issue...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28213134/speech-in-noise-perception-in-musicians-a-review
#11
REVIEW
Emily B J Coffey, Nicolette Mogilever, Robert J Zatorre
The ability to understand speech in the presence of competing sound sources is an important neuroscience question in terms of how the nervous system solves this computational problem. It is also a critical clinical problem that disproportionally affects the elderly, children with language-related learning disorders, and those with hearing loss. Recent evidence that musicians have an advantage on this multifaceted skill has led to the suggestion that musical training might be used to improve or delay the decline of speech-in-noise (SIN) function...
February 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/28177334/development-of-a-novel-italian-speech-in-noise-test-using-a-roving-level-adaptive-method-adult-population-based-normative-data
#12
P Canzi, M Manfrin, G Locatelli, P Nopp, M Perotti, M Benazzo
In recent years the increasing development of hearing devices has led to a critical analysis of the standard methods employed to evaluate hearing function. Being too far from reality, conventional investigation of hearing loss based on pure-tone threshold audiometry and on mono/disyllabic word lists, presented in quiet conditions, has been shown to be inadequate. A speech-in-noise test using a roving-level adaptive method employs target and competing signals varying in level in order to reproduce everyday life speaking conditions and explore a more complete sound range...
December 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28125445/self-adjustment-of-upper-electrical-stimulation-levels-in-ci-programming-and-the-effect-on-auditory-functioning
#13
Jantien L Vroegop, J Gertjan Dingemanse, Marc P van der Schroeff, R Mick Metselaar, André Goedegebure
OBJECTIVES: With current cochlear implants (CIs), CI recipients achieve good speech perception in quiet surroundings. However, in acoustically complex, real-life environments, speech comprehension remains difficult and sound quality often remains poor. It is, therefore, a challenge to program CIs for such environments in a clinic. The CI manufacturer Cochlear Ltd. recently introduced a remote control that enables CI recipients to alter the upper stimulation levels of their user programs themselves...
January 17, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28111321/development-and-validation-of-the-speech-reception-in-noise-sprint-test
#14
Douglas S Brungart, Brian Walden, Mary Cord, Sandeep Phatak, Sarah M Theodoroff, Susan Griest, Ken W Grant
Since 1992, the Speech Recognition in Noise Test, or SPRINT, has been the standard speech-in-noise test for assessing auditory fitness-for-duty of US Army Soldiers with hearing loss. The original SPRINT test consisted of 200 monosyllabic words presented at a Signal-to-Noise Ratio (SNR) of +9 dB in the presence of a six-talker babble noise. Normative data for the test was collected on 319 hearing impaired Soldiers, and a procedure for making recommendations about the disposition of military personnel on the basis of their SPRINT score and their years of experience was developed and implemented as part of US Army policy...
January 19, 2017: Hearing Research
https://www.readbyqxmd.com/read/28097918/the-hearing-benefit-of-cochlear-implantation-for-individuals-with-unilateral-hearing-loss-but-no-tinnitus
#15
Henryk Skarzynski, Artur Lorens, Marika Kruszynska, Anita Obrycka, Dorota Pastuszak, Piotr Henryk Skarzynski
CONCLUSION: Cochlear implants improve the hearing abilities of individuals with unilateral hearing loss and no tinnitus. The benefit is no different from that seen in patients with unilateral hearing loss and incapacitating tinnitus. OBJECTIVE: To evaluate hearing outcomes after cochlear implantation in individuals with unilateral hearing loss and no tinnitus and compare them to those obtained in a similar group who had incapacitating tinnitus. METHODS: Six cases who did not experience tinnitus before operation and 15 subjects with pre-operative tinnitus were evaluated with a structured interview, a monosyllabic word test under difficult listening situations, a sound localization test, and an APHAB (abbreviated profile of hearing aid benefit) questionnaire...
January 18, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28087419/cochlear-synaptopathy-in-acquired-sensorineural-hearing-loss-manifestations-and-mechanisms
#16
REVIEW
M Charles Liberman, Sharon G Kujawa
Common causes of hearing loss in humans - exposure to loud noise or ototoxic drugs and aging - often damage sensory hair cells, reflected as elevated thresholds on the clinical audiogram. Recent studies in animal models suggest, however, that well before this overt hearing loss can be seen, a more insidious, but likely more common, process is taking place that permanently interrupts synaptic communication between sensory inner hair cells and subsets of cochlear nerve fibers. The silencing of affected neurons alters auditory information processing, whether accompanied by threshold elevations or not, and is a likely contributor to a variety of perceptual abnormalities, including speech-in-noise difficulties, tinnitus and hyperacusis...
January 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28067750/unilateral-hearing-loss-understanding-speech-recognition-and-localization-variability-implications-for-cochlear-implant-candidacy
#17
Jill B Firszt, Ruth M Reeder, Laura K Holden
OBJECTIVES: At a minimum, unilateral hearing loss (UHL) impairs sound localization ability and understanding speech in noisy environments, particularly if the loss is severe to profound. Accompanying the numerous negative consequences of UHL is considerable unexplained individual variability in the magnitude of its effects. Identification of covariables that affect outcome and contribute to variability in UHLs could augment counseling, treatment options, and rehabilitation. Cochlear implantation as a treatment for UHL is on the rise yet little is known about factors that could impact performance or whether there is a group at risk for poor cochlear implant outcomes when hearing is near-normal in one ear...
March 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28007526/noise-induced-cochlear-synaptopathy-past-findings-and-future-studies
#18
REVIEW
Megan Kobel, Colleen G Le Prell, Jennifer Liu, John W Hawks, Jianxin Bao
For decades, we have presumed the death of hair cells and spiral ganglion neurons are the main cause of hearing loss and difficulties understanding speech in noise, but new findings suggest synapse loss may be the key contributor. Specifically, recent preclinical studies suggest that the synapses between inner hair cells and spiral ganglion neurons with low spontaneous rates and high thresholds are the most vulnerable subcellular structures, with respect to insults during aging and noise exposure. This cochlear synaptopathy can be "hidden" because this synaptic loss can occur without permanent hearing threshold shifts...
December 19, 2016: Hearing Research
https://www.readbyqxmd.com/read/28005723/light-driven-contact-hearing-aid-for-broad-spectrum-amplification-safety-and-effectiveness-pivotal-study
#19
Bruce J Gantz, Rodney Perkins, Michael Murray, Suzanne Carr Levy, Sunil Puria
OBJECTIVE: Demonstrate safety and effectiveness of the light-driven contact hearing aid to support FDA clearance. STUDY DESIGN: A single-arm, open-label investigational-device clinical trial. SETTING: Two private-practice and one hospital-based ENT clinics. PATIENTS: Forty-three subjects (86 ears) with mild-to-severe bilateral sensorineural hearing impairment. INTERVENTION: Bilateral amplification delivered via a light-driven contact hearing aid comprising a Tympanic Lens (Lens) with a customized platform to directly drive the umbo and a behind-the-ear sound processor (Processor) that encodes sound into light pulses to wirelessly deliver signal and power to the Lens...
March 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28005070/auditory-biological-marker-of-concussion-in-children
#20
Nina Kraus, Elaine C Thompson, Jennifer Krizman, Katherine Cook, Travis White-Schwoch, Cynthia R LaBella
Concussions carry devastating potential for cognitive, neurologic, and socio-emotional disease, but no objective test reliably identifies a concussion and its severity. A variety of neurological insults compromise sound processing, particularly in complex listening environments that place high demands on brain processing. The frequency-following response captures the high computational demands of sound processing with extreme granularity and reliably reveals individual differences. We hypothesize that concussions disrupt these auditory processes, and that the frequency-following response indicates concussion occurrence and severity...
December 22, 2016: Scientific Reports
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