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https://www.readbyqxmd.com/read/28301390/pre-and-postoperative-binaural-unmasking-for-bimodal-cochlear-implant-listeners
#1
Benjamin M Sheffield, Gerald Schuchman, Joshua G W Bernstein
OBJECTIVES: Cochlear implants (CIs) are increasingly recommended to individuals with residual bilateral acoustic hearing. Although new hearing-preserving electrode designs and surgical approaches show great promise, CI recipients are still at risk to lose acoustic hearing in the implanted ear, which could prevent the ability to take advantage of binaural unmasking to aid speech recognition in noise. This study examined the tradeoff between the benefits of a CI for speech understanding in noise and the potential loss of binaural unmasking for CI recipients with some bilateral preoperative acoustic hearing...
March 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28301272/speech-recognition-in-bilaterally-cochlear-implanted-adults-in-tokyo-japan
#2
Yoko Ohta, Atsushi Kawano, Sachie Kawaguchi, Kyoko Shirai, Kiyoaki Tsukahara
INTRODUCTION: The clinical effects of bilateral cochlear implantation (BCI) include binaural summation and better hearing under noise conditions. This study retrospectively examined the utility of BCI compared to unilateral cochlear implantation (CI) in adults. PATIENTS AND METHODS: We investigated 34 adults who underwent BCI, comparing speech recognition between BCI and first CI under silent and noise conditions. We assessed correlations between speech recognition after first and second CIs, and between the interval from first to second CI surgery and speech recognition of second CI...
March 16, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28290068/eeg-based-alpha-neurofeedback-training-for-mood-enhancement
#3
Swee Wu Phneah, Humaira Nisar
The aim of this paper is to develop a preliminary neurofeedback system to improve the mood of the subjects using audio signals by enhancing their alpha brainwaves. Assessment of the effect of music on the human subjects is performed using three methods; subjective assessment of mood with the help of a questionnaire, the effect on brain by analysing EEG signals, and the effect on body by physiological assessment. In this study, two experiments have been designed. The first experiment was to determine the short-term effect of music on soothing human subjects, whereas the second experiment was to determine its long-term effect...
March 13, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28288475/cochlear-implantation-in-children-with-congenital-single-sided-deafness
#4
Jan Peter Thomas, Katrin Neumann, Stefan Dazert, Christiane Voelter
OBJECTIVE: To determine audiological and clinical results of cochlear implantation in children with congenital single sided deafness (SSD), with an emphasis on children implanted before and after 6 years of age. STUDY DESIGN: Retrospective study. SETTING: Tertiary referral center. SUBJECTS: Twenty one children with congenital SSD who were implanted aged 10 months to 11;3 years. INTERVENTION: Unilateral cochlear implantation...
April 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28286233/speech-intelligibility-and-subjective-benefit-in-single-sided-deaf-adults-after-cochlear-implantation
#5
Mareike Finke, Angelika Strauß-Schier, Eugen Kludt, Andreas Büchner, Angelika Illg
Treatment with cochlear implants (CIs) in single-sided deaf individuals started less than a decade ago. CIs can successfully reduce incapacitating tinnitus on the deaf ear and allow, so some extent, the restoration of binaural hearing. Until now, systematic evaluations of subjective CI benefit in post-lingually single-sided deaf individuals and analyses of speech intelligibility outcome for the CI in isolation have been lacking. For the prospective part of this study, the Bern Benefit in Single-Sided Deafness Questionnaire (BBSS) was administered to 48 single-sided deaf CI users to evaluate the subjectively perceived CI benefit across different listening situations...
March 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28269101/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#6
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/28269036/assessment-of-frequency-specific-auditory-steady-state-response-using-amplitude-modulation-with-2-order-exponential-envelope
#7
Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo
This study investigated the performance of Frequency Specific Auditory Steady-State Response (FS-ASSR) detection elicited by the amplitude modulated tone with 2-order exponential envelope (AM2), using objective response detection (ORD) techniques of Spectral F-Test (SFT) and Magnitude Squared Coherence (MSC). ASSRs from 24 normal hearing adults were obtained during binaural multi-tone stimulation of amplitude-modulation (AM) and AM2 at intensities of 60, 45 and 30 dBSPL. The carrier frequencies were 500, 1000, 2000, and 4000 Hz, modulated between 77 and 105 Hz...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268129/responses-of-middle-frequency-modulations-in-vocal-fundamental-frequency-to-different-vocal-intensities-and-auditory-feedback
#8
Shao-Hsuan Lee, Tuan-Jen Fang, Jen-Fang Yu, Guo-She Lee
OBJECTIVES AND BACKGROUND: Auditory feedback can make reflexive responses on sustained vocalizations. Among them, the middle-frequency power of F0 (MFP) may provide a sensitive index to access the subtle changes in different auditory feedback conditions. MATERIALS AND METHODS: Phonatory airflow temperature was obtained from 20 healthy adults at two vocal intensity ranges under four auditory feedback conditions: (1) natural auditory feedback (NO); (2) binaural speech noise masking (SN); (3) bone-conducted feedback of self-generated voice (BAF); and (4) SN and BAF simultaneously...
March 3, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28263629/auditory-spectral-versus-spatial-temporal-order-judgment-threshold-distribution-analysis
#9
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/28259843/point-of-care-cardiac-ultrasound-techniques-in-the-physical-examination-better-at-the-bedside
#10
REVIEW
Bruce J Kimura
The development of hand-carried, battery-powered ultrasound devices has created a new practice in ultrasound diagnostic imaging, called 'point-of-care' ultrasound (POCUS). Capitalising on device portability, POCUS is marked by brief and limited ultrasound imaging performed by the physician at the bedside to increase diagnostic accuracy and expediency. The natural evolution of POCUS techniques in general medicine, particularly with pocket-sized devices, may be in the development of a basic ultrasound examination similar to the use of the binaural stethoscope...
March 4, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28253695/characterizing-the-binaural-contribution-to-speech-in-noise-reception-in-elderly-hearing-impaired-listeners
#11
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/28253652/an-interaural-correlation-based-approach-that-accounts-for-a-wide-variety-of-binaural-detection-data
#12
Leslie R Bernstein, Constantine Trahiotis
Interaural cross-correlation-based models of binaural processing have accounted successfully for a wide variety of binaural phenomena, including binaural detection, binaural discrimination, and measures of extents of laterality based on interaural temporal disparities, interaural intensitive disparities, and their combination. This report focuses on quantitative accounts of data obtained from binaural detection experiments published over five decades. Particular emphasis is placed on stimulus contexts for which commonly used correlation-based approaches fail to provide adequate explanations of the data...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253640/head-movements-while-recognizing-speech-arriving-from-behind
#13
Yi Shen, Monica L Folkerts, Virgina M Richards
Listeners' head movements were measured during speech recognition with simultaneous maskers. Both the target and masker were behind the listener, separated by 30°. Frequent head turns during speech recognition were observed for four of the ten listeners. For those four, head turns were more frequent at lower target-to-masker ratios (TMRs) and were oriented toward the target speech source. When the masker was competing speech the ultimate head orientation angle was larger at lower TMRs. These observed head movements are not consistent with a strategy that maximizes either the target level at a single ear or binaural unmasking of speech...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28253634/assessing-localization-accuracy-in-sound-field-synthesis
#14
Hagen Wierstorf, Alexander Raake, Sascha Spors
Sound field synthesis methods like Wave Field Synthesis (WFS) and Near-Field Compensated Higher Order Ambisonics synthesize a sound field in an extended area surrounded by loudspeakers. Because of the limited number of applicable loudspeakers the synthesized sound field includes artifacts. This paper investigates the influence of these artifacts on the accuracy with which a listener can localize a synthesized source. This was performed with listening tests using dynamic binaural synthesis to simulate different sound field synthesis methods and incorporated several listening positions...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28241675/-association-between-single-nucleotide-polymorphismsin-human-heat-shock-protein-70-gene-and-susceptibility-to-noise-induced-hearing-loss
#15
Y H Li, G S Chen, J Jiao, W H Zhou, H Wu, G Z Gu, H L Zhang, Y X Zheng, S F Yu
Objective: To investigate the association between the single nucleotide polymorphisms (SNPs) at rs1043618, rs2075800, and rs2763979 in human heat shock protein 70 (HSP70) gene and susceptibility to noise-induced hearing loss (NIHL) . Methods: A case-control study was performed, and 5 934 workers exposed to noise in an iron and steel plant in Henan, China, who underwent physical examination from 2006 to 2015, were enrolled as study subjects. According to the criteria of binaural average high - frequency (3000, 4000, and 6000 Hz) hearing threshold≥40 dB (HL) and monauralaverage speech-frequency (500, 1000, 2000 Hz) hearing threshold≥26 dB (HL) on the basis of binauralhigh frequency loss measured by pure tone audiometry, as well as the exclusion of NIHL, a total of 286 workers were enrolled as hearing loss group; after the adjustment for sex, type of work, age (difference≤5 years) , and working years of noise exposure (difference ≤2 years) , 286 workers were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241674/-association-between-serum-magnesium-ion-level-and-risk-of-noise-induced-hearing-loss
#16
J Jiao, G Z Gu, G S Chen, Y X Zheng, H L Zhang, Q Geng, Y B Cheng, S F Yu
Objective: To investigate the association between serum magnesium ion level and risk of noise-induced hearing loss (NIHL) . Methods: Acohort study was performed for 7 445 workers exposed to noise in the steelmaking and steel rolling workshops of an iron and steel enterprise in Henan Province, China. The follow-up time was from January 1, 2006 to December 31, 2015. The workers with a binaural average high-frequency hearing threshold of ≥40 dB (HL) were enrolled as case group, and those with a binaural average high-frequency hearing threshold of <35 dB (HL) and a binaural average speech frequency of ≤25 dB (HL) were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
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
#17
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/28227326/detection-of-binaural-interaction-in-free-field-evoked-auditory-brainstem-responses-by-time-scale-representations
#18
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/28227250/assessment-of-frequency-specific-auditory-steady-state-response-using-amplitude-modulation-with-2-order-exponential-envelope
#19
Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo, Pablo Cevallos-Larrea, Thobias Pereira, Wagner Santos, Silvana M Frota, Antonio F Infantosi, Roberto M Ichinose, Carlos Tierra-Criollo, Pablo Cevallos-Larrea, Wagner Santos, Silvana M Frota, Carlos Tierra-Criollo, Antonio F Infantosi, Thobias Pereira, Roberto M Ichinose
This study investigated the performance of Frequency Specific Auditory Steady-State Response (FS-ASSR) detection elicited by the amplitude modulated tone with 2-order exponential envelope (AM(2)), using objective response detection (ORD) techniques of Spectral F-Test (SFT) and Magnitude Squared Coherence (MSC). ASSRs from 24 normal hearing adults were obtained during binaural multi-tone stimulation of amplitude-modulation (AM) and AM(2) at intensities of 60, 45 and 30 dBSPL. The carrier frequencies were 500, 1000, 2000, and 4000 Hz, modulated between 77 and 105 Hz...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28219180/-advances-in-effect-of-unilateral-auditory-deprivation-on-sound-localization
#20
J F Liu, J S Dai, N Y Wang
In patients with single-sided deafness (SSD), the interaural time difference and the interaural level difference signals are insufficient or missing, which result in the lack of sound localization ability and the decrease of speech comprehension in the noise environments. SSD can also cause the morphological and functional changes of the central auditory system, resulting in auditory deprivation. In early stage of the development, the auditory center is more susceptible to ambient environment and auditory inputs...
February 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
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