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https://www.readbyqxmd.com/read/28286635/maturational-changes-in-ear-advantage-for-monaural-word-recognition-in-noise-among-listeners-with-central-auditory-processing-disorders
#1
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/28269101/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#2
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/28263629/auditory-spectral-versus-spatial-temporal-order-judgment-threshold-distribution-analysis
#3
Leah Fostick, Harvey Babkoff
Some researchers suggested that one central mechanism is responsible for temporal order judgments (TOJ), within and across sensory channels. This suggestion is supported by findings of similar TOJ thresholds in same modality and cross-modality TOJ tasks. In the present study, we challenge this idea by analyzing and comparing the threshold distributions of the spectral and spatial TOJ tasks. In spectral TOJ, the tones differ in their frequency ("high" and "low") and are delivered either binaurally or monaurally...
March 6, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28253695/characterizing-the-binaural-contribution-to-speech-in-noise-reception-in-elderly-hearing-impaired-listeners
#4
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/28241225/laryngeal-aerodynamics-in-healthy-older-adults-and-adults-with-parkinson-s-disease
#5
Deborah Matheron, Elaine T Stathopoulos, Jessica E Huber, Joan E Sussman
Purpose: The present study compared laryngeal aerodynamic function of healthy older adults (HOA) to adults with Parkinson's disease (PD) while speaking at a comfortable and increased vocal intensity. Method: Laryngeal aerodynamic measures (subglottal pressure, peak-to-peak flow, minimum flow, and open quotient [OQ]) were compared between HOAs and individuals with PD who had a diagnosis of hypophonia. Increased vocal intensity was elicited via monaurally presented multitalker background noise...
March 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
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
#6
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/28237547/the-auditory-evoked-gamma-response-and-its-relation-with-the-n1m
#7
Caroline Witton, Mark A Eckert, Ian M Stanford, Lauren E Gascoyne, Paul L Furlong, Siân F Worthen, Arjan Hillebrand
This study explored the patterns of oscillatory activity that underpin the N1m auditory evoked response. Evoked gamma activity is a small and relatively rarely-reported component of the auditory evoked response, and the objective of this work was to determine how this component relates to the larger and more prolonged changes in lower frequency bands. An event-related beamformer analysis of MEG data from monaural click stimulation was used to reconstruct volumetric images and virtual electrode time series. Group analysis of localisations showed that activity in the gamma band originated from a source that was more medial than those for activity in the theta-to-beta band, and virtual-electrode analysis showed that the source of the gamma activity could be statistically dissociated from the lower-frequency response...
February 22, 2017: Hearing Research
https://www.readbyqxmd.com/read/28227326/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#8
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/28188428/cochlear-implant-treatment-of-patients-with-single-sided-deafness-or-asymmetric-hearing-loss
#9
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/28166088/directional-microphone-contralateral-routing-of-signals-in-cochlear-implant-users-a-within-subjects-comparison
#10
Wilhelm Wimmer, Martin Kompis, Christof Stieger, Marco Caversaccio, Stefan Weder
OBJECTIVES: For medical or financial reasons, bilateral cochlear implantation is not always possible in bilaterally deafened patients. In such cases, a contralateral routing of signals (CROS) device could complement the monaural implant. The goal of our study was to compare the benefit of three different conditions: (1) unilateral cochlear implant (CI) alone, (2) unilateral CI complemented with a directional CROS microphone, and (3) bilateral CIs. DESIGN: Twelve bilateral experienced CI users were tested...
February 2, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28147600/sequential-stream-segregation-in-normally-hearing-and-cochlear-implant-listeners
#11
Viral D Tejani, Kara C Schvartz-Leyzac, Monita Chatterjee
Sequential stream segregation by normal hearing (NH) and cochlear implant (CI) listeners was investigated using an irregular rhythm detection (IRD) task. Pure tones and narrowband noises of different bandwidths were presented monaurally to older and younger NH listeners via headphones. For CI users, stimuli were delivered as pure tones via soundfield and via direct electrical stimulation. Results confirmed that tonal pitch is not essential for stream segregation by NH listeners and that aging does not reduce NH listeners' stream segregation...
January 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28102912/different-spatio-temporal-electroencephalography-features-drive-the-successful-decoding-of-binaural-and-monaural-cues-for-sound-localization
#12
Adam Bednar, Francis M Boland, Edmund C Lalor
The human ability to localize sound is essential for monitoring our environment and helps us to analyse complex auditory scenes. Although the acoustic cues mediating sound localization have been established, it remains unknown how these cues are represented in human cortex. In particular, it is still a point of contention whether binaural and monaural cues are processed by the same or distinct cortical networks. In this study, participants listened to a sequence of auditory stimuli from different spatial locations while we recorded their neural activity using electroencephalography (EEG)...
January 19, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28045838/effect-of-context-and-hearing-loss-on-time-gated-word-recognition-in-children
#13
Dawna Lewis, Judy Kopun, Ryan McCreery, Marc Brennan, Kanae Nishi, Evan Cordrey, Pat Stelmachowicz, Mary Pat Moeller
OBJECTIVES: The purpose of this study was to examine word recognition in children who are hard of hearing (CHH) and children with normal hearing (CNH) in response to time-gated words presented in high- versus low-predictability sentences (HP, LP), where semantic cues were manipulated. Findings inform our understanding of how CHH combine cognitive-linguistic and acoustic-phonetic cues to support spoken word recognition. It was hypothesized that both groups of children would be able to make use of linguistic cues provided by HP sentences to support word recognition...
December 30, 2016: Ear and Hearing
https://www.readbyqxmd.com/read/28043881/simultaneously-evoked-auditory-potentials-seap-a-new-method-for-concurrent-measurement-of-cortical-and-subcortical-auditory-evoked-activity
#14
Christopher Slugocki, Daniel Bosnyak, Laurel J Trainor
Recent electrophysiological work has evinced a capacity for plasticity in subcortical auditory nuclei in human listeners. Similar plastic effects have been measured in cortically-generated auditory potentials but it is unclear how the two interact. Here we present Simultaneously-Evoked Auditory Potentials (SEAP), a method designed to concurrently elicit electrophysiological brain potentials from inferior colliculus, thalamus, and primary and secondary auditory cortices. Twenty-six normal-hearing adult subjects (mean 19...
December 31, 2016: Hearing Research
https://www.readbyqxmd.com/read/28036411/the-acceptable-noise-level-and-the-pure-tone-audiogram
#15
K Jonas Brännström, Steen Østergaard Olsen
Purpose: The vast majority of previous studies suggest that there is no relationship between the acceptable noise level (ANL) and pure-tone hearing thresholds reported as the average pure-tone hearing thresholds (pure-tone average). This study aims to explore (a) the relationship between hearing thresholds at individual frequencies and the ANL and (b) a measure of the slope of the audiogram and ANL. Method: Sixty-three Danish adult hearing aid users participated...
March 1, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28002083/the-effect-of-interaural-mismatches-on-contralateral-unmasking-with-single-sided-vocoders
#16
Jessica M Wess, Douglas S Brungart, Joshua G W Bernstein
OBJECTIVES: Cochlear-implant (CI) users with single-sided deafness (SSD)-that is, one normal-hearing (NH) ear and one CI ear-can obtain some unmasking benefits when a mixture of target and masking voices is presented to the NH ear and a copy of just the masking voices is presented to the CI ear. NH listeners show similar benefits in a simulation of SSD-CI listening, whereby a mixture of target and masking voices is presented to one ear and a vocoded copy of the masking voices is presented to the opposite ear...
December 19, 2016: Ear and Hearing
https://www.readbyqxmd.com/read/27995277/-cochlear-implant-treatment-of-patients-with-single-sided-deafness-or-asymmetric-hearing-loss-german-version
#17
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 (bilateral) contralateral routing of signals ((Bi)CROS) hearing aids ((Bi)CROS-HA, (Bi)CROS), bone-anchored hearing systems (BAHS) or cochlear implants (CI). To date, only small case series have been published on 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 BAHS and (Bi)CROS treatment options in a large number of patients...
December 19, 2016: HNO
https://www.readbyqxmd.com/read/27973669/pure-tone-spondee-threshold-relationships-in-functional-hearing-loss-a-test-of-loudness-contribution
#18
Robert S Schlauch, Heekyung J Han, Tzu-Ling J Yu, Edward Carney
Purpose: The purpose of this article is to examine explanations for pure-tone average-spondee threshold differences in functional hearing loss. Method: Loudness magnitude estimation functions were obtained from 24 participants for pure tones (0.5 and 1.0 kHz), vowels, spondees, and speech-shaped noise as a function of level (20-90 dB SPL). Participants listened monaurally through earphones. Loudness predictions were obtained for the same stimuli by using a computational, dynamic loudness model...
January 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27917394/a-deep-ensemble-learning-method-for-monaural-speech-separation
#19
Xiao-Lei Zhang, DeLiang Wang
Monaural speech separation is a fundamental problem in robust speech processing. Recently, deep neural network (DNN)-based speech separation methods, which predict either clean speech or an ideal time-frequency mask, have demonstrated remarkable performance improvement. However, a single DNN with a given window length does not leverage contextual information sufficiently, and the differences between the two optimization objectives are not well understood. In this paper, we propose a deep ensemble method, named multicontext networks, to address monaural speech separation...
March 2016: IEEE/ACM Transactions on Audio, Speech, and Language Processing
https://www.readbyqxmd.com/read/27914414/spatial-attention-in-bilateral-cochlear-implant-users
#20
Matthew J Goupell, Alan Kan, Ruth Y Litovsky
Cochlear-implant (CI) users have difficulty understanding speech in the presence of interfering sounds. This study was designed to determine if binaural unmasking of speech is limited by peripheral or central encoding. Speech was presented to bilateral CI listeners using their clinical processors; unprocessed or vocoded speech was presented to normal-hearing (NH) listeners. Performance was worst for all listener groups in conditions where both the target and interferer were presented monaurally or diotically (i...
September 2016: Journal of the Acoustical Society of America
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