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https://www.readbyqxmd.com/read/28544507/the-effect-of-binaural-beat-technology-on-the-cardiovascular-stress-response-in-military-service-members-with-postdeployment-stress
#1
MeLisa A Gantt, Stephanie Dadds, Debra S Burns, Dale Glaser, Angelo D Moore
PURPOSE: To assess the efficacy of embedded theta brainwave frequency in music using binaural beat technology (BBT) compared to music alone on the cardiovascular stress response in military service members with postdeployment stress. DESIGN: A double-blinded, randomized, pre- and postintervention trial. METHODS: Seventy-four military services members with complaint of postdeployment stress were randomized to either music with BBT or music alone...
May 23, 2017: Journal of Nursing Scholarship
https://www.readbyqxmd.com/read/28538467/dichotic-listening-deficit-associated-with-solvent-exposure
#2
Simon P Landry, Adrian Fuente
HYPOTHESIS: A significant left ear deficit can be observed in solvent-exposed individuals using the dichotic digit test. BACKGROUND: Solvents are ubiquitous in global industrial processes. Due to their lipophilic nature, solvents can adversely affect large white matter tracks such as the corpus callosum. Previous investigations reveal that long-term workplace exposure to solvents is also deleterious to various auditory processes. Investigations in exposed populations suggest a decreased performance for dichotic listening...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28531210/judging-time-to-passage-of-looming-sounds-evidence-for-the-use-of-distance-based-information
#3
Rosa Mariana Silva, João Lamas, Carlos César Silva, Yann Coello, Sandra Mouta, Jorge Almeida Santos
Perceptual judgments are an essential mechanism for our everyday interaction with other moving agents or events. For instance, estimation of the time remaining before an object contacts or passes us is essential to act upon or to avoid that object. Previous studies have demonstrated that participants use different cues to estimate the time to contact or the time to passage of approaching visual stimuli. Despite the considerable number of studies on the judgment of approaching auditory stimuli, not much is known about the cues that guide listeners' performance in an auditory Time-to-Passage (TTP) task...
2017: PloS One
https://www.readbyqxmd.com/read/28515283/anisomorphic-cortical-reorganization-in-asymmetric-sensorineural-hearing-loss
#4
Steven W Cheung, Craig Anthony Atencio, Eliott R J Levy, Robert C Froemke, Christoph E Schreiner
Acoustic trauma or inner ear disease may predominantly injure one ear, causing asymmetric sensorineural hearing loss (SNHL). While characteristic frequency (CF) map plasticity of primary auditory cortex (AI) contralateral to the injured ear has been detailed, there is no study that also evaluates ipsilateral AI to compare cortical reorganization across both hemispheres. We assess whether normal isomorphic mirror image relationship between the two hemispheres is maintained or disrupted in mild-to-moderate asymmetric SNHL of adult squirrel monkeys...
May 17, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28511103/the-detection-of-virtual-objects-using-echoes-by-humans-spectral-cues
#5
Daniel Rowan, Timos Papadopoulos, Lauren Archer, Amanda Goodhew, Hayley Cozens, Ricardo Guzman Lopez, David Edwards, Hannah Holmes, Robert Allen
Some blind people use echoes to detect discrete, silent objects to support their spatial orientation/navigation, independence, safety and wellbeing. The acoustical features that people use for this are not well understood. Listening to changes in spectral shape due to the presence of an object could be important for object detection and avoidance, especially at short range, although it is currently not known whether it is possible with echolocation-related sounds. Bands of noise were convolved with recordings of binaural impulse responses of objects in an anechoic chamber to create 'virtual objects', which were analysed and played to sighted and blind listeners inexperienced in echolocation...
April 27, 2017: Hearing Research
https://www.readbyqxmd.com/read/28508991/digital-stethoscopes-compared-to-standard-auscultation-for-detecting-abnormal-paediatric-breath-sounds
#6
Ajay C Kevat, Anaath Kalirajah, Robert Roseby
Our study aimed to objectively describe the audiological characteristics of wheeze and crackles in children by using digital stethoscope (DS) auscultation, as well as assess concordance between standard auscultation and two different DS devices in their ability to detect pathological breath sounds. Twenty children were auscultated by a paediatric consultant doctor and digitally recorded using the Littman™ 3200 Digital Electronic Stethoscope and a Clinicloud™ DS with smart device. Using spectrographic analysis, we found those with clinically described wheeze had prominent periodic waveform segments spanning expiration for a period of 0...
May 16, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28494386/effect-of-efferent-activation-on-binaural-frequency-selectivity
#7
Jesko L Verhey, Monika Kordus, Vit Drga, Ifat Yasin
Binaural notched-noise experiments indicate a reduced frequency selectivity of the binaural system compared to monaural processing. The present study investigates how auditory efferent activation (via the medial olivocochlear system) affects binaural frequency selectivity in normal-hearing listeners. Thresholds were measured for a 1-kHz signal embedded in a diotic notched-noise masker for various notch widths. The signal was either presented in phase (diotic) or in antiphase (dichotic), gated with the noise...
May 2, 2017: Hearing Research
https://www.readbyqxmd.com/read/28490003/binaural-tympanic-membrane-perforations-after-blast-injury
#8
Jeroen B van Rijswijk, Patrick Dubach
A 30-year-old man presented to the emergency department with new-onset hearing loss and tinnitus in both ears after a blast injury. While at a wedding that included celebratory fireworks, he had been standing near a sand-filled mortar when it accidentally ignited. Otoscopy revealed multiple..
May 11, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28464649/erratum-spatial-release-from-masking-based-on-binaural-processing-for-up-to-six-maskers-j-acoust-soc-am-141-2093-2106-2017
#9
William A Yost
No abstract text is available yet for this article.
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28464641/extent-of-lateralization-at-large-interaural-time-differences-in-simulated-electric-hearing-and-bilateral-cochlear-implant-users
#10
Regina M Baumgärtel, Hongmei Hu, Birger Kollmeier, Mathias Dietz
Normal-hearing (NH) listeners are able to localize sound sources with extraordinary accuracy through interaural cues, most importantly interaural time differences (ITDs) in the temporal fine structure. Bilateral cochlear implant (CI) users are also able to localize sound sources, yet generally at lower accuracy than NH listeners. The gap in performance can in part be attributed to current CI systems not faithfully transmitting interaural cues, especially ITDs. With the introduction of binaurally linked CI systems, the presentation of ITD cues for bilateral CI users is foreseeable...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28464633/predicting-the-perceived-reverberation-in-different-room-acoustic-environments-using-a-binaural-auditory-model
#11
Alejandro Osses Vecchi, Armin Kohlrausch, Winfried Lachenmayr, Eckard Mommertz
In this paper a binaural auditory model was used to compute reverberance estimates in four simulated halls. For three of the halls different absorption conditions were evaluated. The model estimates (pRev) were obtained using music excerpts of an orchestra consisting of 23 instrument sections and then compared with the room acoustic parameters of reverberation time (T30) and early decay time (EDT) at mid frequencies. Although the results showed that pRev has a higher correlation with EDT rather than with T30, this relationship depends on the properties of the instruments...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28464620/effects-of-stimulus-order-on-auditory-distance-discrimination-of-virtual-nearby-sound-sources
#12
Simone Spagnol, Rebekka Hoffmann, Árni Kristjánsson, Federico Avanzini
Stimulus order has been reported to affect perceived loudness. This letter investigates how temporal order affects distance discrimination of receding and approaching pairs of sound sources rendered binaurally in the anechoic near-field. Individual discrimination thresholds for different virtual locations were measured through an adaptive procedure. The threshold values show a bias toward approaching stimuli for closer reference distances (≤50 cm) and toward receding stimuli for farther reference distances (100 cm), but only when absolute intensity cues are available...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28458810/autoimmune-ear-disease-clinical-and-diagnostic-relevance-in-cogan-s-sydrome
#13
Luigi Maiolino, Salvatore Cocuzza, Angelo Conti, Luisa Licciardello, Agostino Serra, Salvatore Gallina
The autoimmune inner ear disease is a clinical syndrome with uncertain pathogenesis that is often associated to rapidly progressive hearing loss that, especially at the early stages of disease, may be at monoaural localization, although more often it is at binaural localization. It usually occurs as a sudden deafness, or a rapidly progressive sensorineural hearing loss. In this study a particular form of autoimmune inner ear disease is described, Cogan's syndrome. Cogan's syndrome is a chronic inflammatory disorder that most commonly affects young adults...
February 1, 2017: Audiology Research
https://www.readbyqxmd.com/read/28456098/intentional-switching-in-auditory-selective-attention-exploring-age-related-effects-in-a-spatial-setup-requiring-speech-perception
#14
Josefa Oberem, Iring Koch, Janina Fels
Using a binaural-listening paradigm, age-related differences in the ability to intentionally switch auditory selective attention between two speakers, defined by their spatial location, were examined. Therefore 40 normal-hearing participants (20 young, Ø 24.8years; 20 older Ø 67.8years) were tested. The spatial reproduction of stimuli was provided by headphones using head-related-transfer-functions of an artificial head. Spoken number words of two speakers were presented simultaneously to participants from two out of eight locations on the horizontal plane...
April 26, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28443018/the-treatment-based-on-temporal-information-processing-reduces-speech-comprehension-deficits-in-aphasic-subjects
#15
Aneta Szymaszek, Tomasz Wolak, Elzbieta Szelag
Experimental studies have reported a close association between temporal information processing (TIP) and language comprehension. Brain-injured subjects with aphasia show disturbed TIP which was evidenced in elevated temporal order threshold (TOT) as compared to control subjects. The present study is aimed at improving auditory speech comprehension in aphasic subjects using a specific temporal treatment. Fourteen patients having deficits in both speech comprehension and TIP were tested. The Token Test, phoneme discrimination tests (PDT) and Voice-Onset-Time (VOT) Test were employed to assess speech comprehension...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28441300/speech-detection-in-noise-for-young-bilaterally-implanted-children-is-there-evidence-of-binaural-benefit-over-the-shadowed-ear-alone
#16
Karyn L Galvin, Richard C Dowell, Richard J van Hoesel, Mansze Mok
OBJECTIVES: To measure binaural benefit over the shadowed ear alone for young bilateral cochlear implant (CI) users. It was hypothesized that children who received bilateral CIs at a young age (<4 years), and had significant bilateral experience, would demonstrate lower detection thresholds for speech sounds in background noise in the bilateral CI over the unilateral CI condition when the added CI was ipsilateral to the noise source. DESIGN: Children receiving bilateral CIs at the Eye and Ear Hospital Clinic in Melbourne were invited to participate in a wider research project evaluating outcomes; those participating in the wider project who were bilaterally implanted by 4 years and were approximately 2 years postoperative were included in the present study...
April 22, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28429126/assessing-the-role-of-place-and-timing-cues-in-coding-frequency-and-amplitude-modulation-as-a-function-of-age
#17
Kelly L Whiteford, Heather A Kreft, Andrew J Oxenham
Natural sounds can be characterized by their fluctuations in amplitude and frequency. Ageing may affect sensitivity to some forms of fluctuations more than others. The present study used individual differences across a wide age range (20-79 years) to test the hypothesis that slow-rate, low-carrier frequency modulation (FM) is coded by phase-locked auditory-nerve responses to temporal fine structure (TFS), whereas fast-rate FM is coded via rate-place (tonotopic) cues, based on amplitude modulation (AM) of the temporal envelope after cochlear filtering...
April 20, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28418327/auditory-and-cognitive-factors-associated-with-speech-in-noise-complaints-following-mild-traumatic-brain-injury
#18
Eric C Hoover, Pamela E Souza, Frederick J Gallun
BACKGROUND: Auditory complaints following mild traumatic brain injury (MTBI) are common, but few studies have addressed the role of auditory temporal processing in speech recognition complaints. PURPOSE: In this study, deficits understanding speech in a background of speech noise following MTBI were evaluated with the goal of comparing the relative contributions of auditory and nonauditory factors. RESEARCH DESIGN: A matched-groups design was used in which a group of listeners with a history of MTBI were compared to a group matched in age and pure-tone thresholds, as well as a control group of young listeners with normal hearing (YNH)...
April 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28418322/binaural-interference-quo-vadis
#19
James Jerger, Shlomo Silman, Carol Silverman, Michele Emmer
The reality of the phenomenon of binaural interference with speech recognition has been debated for two decades. Research has taken one of two avenues; group studies or case reports. In group studies, a sample of the elderly population is tested on speech recognition under three conditions; binaural, monaural right and monaural left. The aim is to determine the percent of the sample in which the expected outcome (binaural score-better-than-either-monaural score) is reversed (i.e., one of the monaural scores is better than the binaural score)...
April 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28413888/implementation-and-evaluation-of-a-danish-test-battery-for-auditory-processing-disorder-in-children
#20
Ellen Raben Pedersen, Berit Dahl-Hansen, Jakob Christensen-Dalsgaard, Christian Brandt
OBJECTIVE: This study presents a Danish test battery for auditory processing disorder (APD). The tests were evaluated as to normative cut-off values (pass-fail criteria) and their test-retest reliability. DESIGN: The battery consists of four behavioural tests: the filtered words (FW) test, the dichotic digits (DD) test, the gap detection (GD) test and the binaural masking level difference (BMLD) test. The tests were evaluated through listening experiments on children with no known history of auditory problems...
April 15, 2017: International Journal of Audiology
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