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https://www.readbyqxmd.com/read/29325392/horizontal-localization-in-simulated-unilateral-hearing-loss
#1
Anvarsamarein Parisa, Nazeri Ahmad Reza, Sameni Seyyed Jalal, Kamali Mohammad, Zarrin Koob Homa
BACKGROUND AND OBJECTIVES: The ability to localize a sound source is one of the binaural hearing benefits in a horizontal plane based on interaural time difference and interaural intensity difference. Unilateral or bilateral asymmetric hearing loss will affect binaural hearing and lead to sound locating errors. In this cross sectional analytical descriptive study, the localization error was investigated when participants turned their heads to the sound source with closed eyes and after simulating unilateral hearing loss by placing earplugs inside the right ear canal...
December 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/29316819/hearing-aid-noise-suppression-and-working-memory-function
#2
Tobias Neher, Kirsten C Wagener, Rosa-Linde Fischer
OBJECTIVE: Research findings concerning the relation between benefit from hearing aid (HA) noise suppression and working memory function are inconsistent. The current study thus investigated the effects of three noise suppression algorithms on auditory working memory and the relation with reading span. DESIGN: Using a computer simulation of bilaterally fitted HAs, four settings were tested: (1) unprocessed, (2) directional microphones, (3) single-channel noise reduction, and (4) binaural coherence-based noise reduction...
January 9, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29310976/combination-of-binaural-and-harmonic-masking-release-effects-in-the-detection-of-a-single-component-in-complex-tones
#3
Martin Klein-Hennig, Mathias Dietz, Volker Hohmann
Both harmonic and binaural signal properties are relevant for auditory processing. To investigate how these cues combine in the auditory system, detection thresholds for an 800-Hz tone masked by a diotic (i.e., identical between the ears) harmonic complex tone were measured in six normal-hearing subjects. The target tone was presented either diotically or with an interaural phase difference (IPD) of 180° and in either harmonic or "mistuned" relationship to the diotic masker. Three different maskers were used, a resolved and an unresolved complex tone (fundamental frequency: 160 and 40 Hz) with four components below and above the target frequency and a broadband unresolved complex tone with 12 additional components...
December 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/29305038/intentional-switching-in-auditory-selective-attention-exploring-attention-shifts-with-different-reverberation-times
#4
Josefa Oberem, Julia Seibold, Iring Koch, Janina Fels
Using a well-established binaural-listening paradigm the ability to intentionally switch auditory selective attention was examined under anechoic, low reverberation (0.8 s) and high reverberation (1.75 s) conditions. Twenty-three young, normal-hearing subjects were tested in a within-subject design to analyze influences of the reverberation times. Spoken word pairs by two speakers were presented simultaneously to subjects from two of eight azimuth positions. The stimuli consisted of a single number word, (i...
December 22, 2017: Hearing Research
https://www.readbyqxmd.com/read/29297265/short-term-effects-of-binaural-beats-on-eeg-power-functional-connectivity-cognition-gait-and-anxiety-in-parkinson-s-disease
#5
Gerardo Gálvez, Manuel Recuero, Leonides Canuet, Francisco Del-Pozo
We applied rhythmic binaural sound to Parkinson's Disease (PD) patients to investigate its influence on several symptoms of this disease and on Electrophysiology (Electrocardiography and Electroencephalography (EEG)). We conducted a double-blind, randomized controlled study in which rhythmic binaural beats and control were administered over two randomized and counterbalanced sessions (within-subjects repeated-measures design). Patients ([Formula: see text], age [Formula: see text], stage I-III Hoehn & Yahr scale) participated in two sessions of sound stimulation for 10[Formula: see text]min separated by a minimum of 7 days...
November 13, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/29289075/masking-release-by-combined-spatial-and-masker-fluctuation-effects-in-the-open-sound-field
#6
John C Middlebrooks
In a complex auditory scene, signals of interest can be distinguished from masking sounds by differences in source location [spatial release from masking (SRM)] and by differences between masker-alone and masker-plus-signal envelopes. This study investigated interactions between those factors in release of masking of 700-Hz tones in an open sound field. Signal and masker sources were colocated in front of the listener, or the signal source was shifted 90° to the side. In Experiment 1, the masker contained a 25-Hz-wide on-signal band plus flanking bands having envelopes that were either mutually uncorrelated or were comodulated...
December 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29287849/a-novel-variant-in-the-cdh23-gene-is-associated-with-non-syndromic-hearing-loss-in-a-chinese-family
#7
Yuan Liang, Kangwei Wang, Qi Peng, Pengyuan Zhu, Chunqiu Wu, Chunbao Rao, Jiang Chang, Siping Li, Xiaomei Lu
OBJECTIVES: To explore the pathogenic causes of a proband who was diagnosed with non-syndromic hearing loss. METHODS: We performed targeted capture of 159 known deafness-related genes and next-generation sequencing in the proband who was tested negative for the twenty hotspot variants in four common deafness-related genes(GJB2, GJB3, SLC26A4 and MTRNR1); Clinical reassessments, including detailed audiological and ocular examinations were performed in the proband and his normal parents...
January 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29287039/effect-of-blast-injury-on-auditory-localization-in-military-service-members
#8
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/29287037/correlations-between-the-degree-of-endolymphatic-hydrops-and-symptoms-and-audiological-test-results-in-patients-with-meni%C3%A3-re-s-disease-a-reevaluation
#9
Shiyin Yang, Huaming Zhu, Bijun Zhu, Hui Wang, Zhengnong Chen, Yaqin Wu, Bin Chen, Haibo Shi, Yuehua Li, Jing Zou, Shankai Yin
OBJECTIVE: This study was performed to reevaluate the diagnostic significance of clinically well-accepted audiological tests in indicating endolymphatic hydrops (EH) in Menière's disease (MD). STUDY DESIGN: Retrospective case review. SETTINGS: Hospital. PATIENTS: Fifty patients (52 affected ears) diagnosed with MD were enrolled. INTERVENTION: Diagnostic. MAIN OUTCOME MEASURE: To analyze the correlations between endolymphatic hydrops and results of audiological test including the pure-tone audiometry threshold, suprathreshold function tests, electrocochleogram, and glycerol test...
December 28, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29281618/physiological-models-of-the-lateral-superior-olive
#10
Go Ashida, Daniel J Tollin, Jutta Kretzberg
In computational biology, modeling is a fundamental tool for formulating, analyzing and predicting complex phenomena. Most neuron models, however, are designed to reproduce certain small sets of empirical data. Hence their outcome is usually not compatible or comparable with other models or datasets, making it unclear how widely applicable such models are. In this study, we investigate these aspects of modeling, namely credibility and generalizability, with a specific focus on auditory neurons involved in the localization of sound sources...
December 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29279894/binaural-speech-understanding-with-bilateral-cochlear-implants-in-reverberation
#11
Kostas Kokkinakis
Purpose: The purpose of this study was to investigate whether bilateral cochlear implant (CI) listeners who are fitted with clinical processors are able to benefit from binaural advantages under reverberant conditions. Another aim of this contribution was to determine whether the magnitude of each binaural advantage observed inside a highly reverberant environment differs significantly from the magnitude measured in a near-anechoic environment. Method: Ten adults with postlingual deafness who are bilateral CI users fitted with either Nucleus 5 or Nucleus 6 clinical sound processors (Cochlear Corporation) participated in this study...
December 26, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/29251690/cost-effective-hearing-conservation-regulatory-and-research-priorities
#12
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/29238390/modulatory-effect-of-association-of-brain-stimulation-by-light-and-binaural-beats-in-specific-brain-waves
#13
Mauricio Rocha Calomeni, Vernon Furtado da Silva, Bruna Brandão Velasques, Olavo Guimarães Feijó, Juliana Marques Bittencourt, Alair Pedro Ribeiro de Souza E Silva
Introduction: One of the positive effects of brain stimulation is interhemispheric modulation as shown in some scientific studies. This study examined if a type of noninvasive stimulation using binaural beats with led-lights and sound would show different modulatory effects upon Alfa and SMR brain waves of elderlies and children with some disease types. Subjects: The sample included 75 individuals of both genders, being, randomly, divided in 6 groups. Groups were named elderly without dementia diagnosis (EWD), n=15, 76±8 years, elderly diagnosed with Parkinson's disease (EDP), n=15, 72±7 years, elderly diagnosed with Alzheimer's disease (EDA), n=15, 81±6 years...
2017: Clinical Practice and Epidemiology in Mental Health: CP & EMH
https://www.readbyqxmd.com/read/29222722/binaural-auditory-beats-affect-long-term-memory
#14
Miguel Garcia-Argibay, Miguel A Santed, José M Reales
The presentation of two pure tones to each ear separately with a slight difference in their frequency results in the perception of a single tone that fluctuates in amplitude at a frequency that equals the difference of interaural frequencies. This perceptual phenomenon is known as binaural auditory beats, and it is thought to entrain electrocortical activity and enhance cognition functions such as attention and memory. The aim of this study was to determine the effect of binaural auditory beats on long-term memory...
December 8, 2017: Psychological Research
https://www.readbyqxmd.com/read/29216226/startling-similarity-effects-of-facial-self-resemblance-and-familiarity-on-the-processing-of-emotional-faces
#15
Johannes B Finke, Mauro F Larra, Martina U Merz, Hartmut Schächinger
Facial self-resemblance has been associated with positive emotional evaluations, but this effect may be biased by self-face familiarity. Here we report two experiments utilizing startle modulation to investigate how the processing of facial expressions of emotion is affected by subtle resemblance to the self as well as to familiar faces. Participants of the first experiment (I) (N = 39) were presented with morphed faces showing happy, neutral, and fearful expressions which were manipulated to resemble either their own or unknown faces...
2017: PloS One
https://www.readbyqxmd.com/read/29210810/restoring-perceived-loudness-for-listeners-with-hearing-loss
#16
Dirk Oetting, Volker Hohmann, Jens-E Appell, Birger Kollmeier, Stephan D Ewert
OBJECTIVES: Normalizing perceived loudness is an important rationale for gain adjustments in hearing aids. It has been demonstrated that gains required for restoring normal loudness perception for monaural narrowband signals can lead to higher-than-normal loudness in listeners with hearing loss, particularly for binaural broadband presentation. The present study presents a binaural bandwidth-adaptive dynamic compressor (BBDC) that can apply different gains for narrow- and broadband signals...
November 27, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29209382/listening-to-sentences-in-noise-revealing-binaural-hearing-challenges-in-patients-with-schizophrenia
#17
Noor Alaudin Abdul Wahab, Mohd Normani Zakaria, Abdul Hamid Abdul Rahman, Dinsuhaimi Sidek, Suzaily Wahab
Objective: The present, case-control, study investigates binaural hearing performance in schizophrenia patients towards sentences presented in quiet and noise. Methods: Participants were twenty-one healthy controls and sixteen schizophrenia patients with normal peripheral auditory functions. The binaural hearing was examined in four listening conditions by using the Malay version of hearing in noise test. The syntactically and semantically correct sentences were presented via headphones to the randomly selected subjects...
November 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/29209149/electroencephalographic-evaluation-of-acoustic-therapies-for-the-treatment-of-chronic-and-refractory-tinnitus
#18
Luz María Alonso-Valerdi, David I Ibarra-Zarate, Francisco J Tavira-Sánchez, Ricardo A Ramírez-Mendoza, Manuel Recuero
Background: To date, a large number of acoustic therapies have been applied to treat tinnitus. The effect that produces those auditory stimuli is, however, not well understood yet. Furthermore, the conventional clinical protocol is based on a trial-error procedure, and there is not a formal and adequate treatment follow-up. At present, the only way to evaluate acoustic therapies is by means of subjective methods such as analog visual scale and ad-hoc questionnaires. Methods: This protocol seeks to establish an objective methodology to treat tinnitus with acoustic therapies based on electroencephalographic (EEG) activity evaluation...
2017: BMC Ear, Nose, and Throat Disorders
https://www.readbyqxmd.com/read/29208336/a-framework-for-testing-and-comparing-binaural-models
#19
Mathias Dietz, Jean-Hugues Lestang, Piotr Majdak, Richard M Stern, Torsten Marquardt, Stephan D Ewert, William M Hartmann, Dan F M Goodman
Auditory research has a rich history of combining experimental evidence with computational simulations of auditory processing in order to deepen our theoretical understanding of how sound is processed in the ears and in the brain. Despite significant progress in the amount of detail and breadth covered by auditory models, for many components of the auditory pathway there are still different model approaches that are often not equivalent but rather in conflict with each other. Similarly, some experimental studies yield conflicting results which has led to controversies...
November 28, 2017: Hearing Research
https://www.readbyqxmd.com/read/29203800/cortical-organization-restored-by-cochlear-implantation-in-young-children-with-single-sided-deafness
#20
Melissa Jane Polonenko, Karen Ann Gordon, Sharon Lynn Cushing, Blake Croll Papsin
Early treatment of single sided deafness in children has been recommended to protect from neurodevelopmental preference for the better hearing ear and from social and educational deficits. A fairly homogeneous group of five young children (≤3.6 years of age) with normal right sided hearing who received a cochlear implant to treat deafness in their left ears were studied. Etiology of deafness was largely cytomegalovirus (n = 4); one child had an enlarged vestibular aqueduct. Multi-channel electroencephalography of cortical evoked activity was measured repeatedly over time at: 1) acute (0...
December 4, 2017: Scientific Reports
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