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https://www.readbyqxmd.com/read/28538825/cochlear-function-in-students-exposed-to-pesticides
#1
Tatiana Rodrigues Garcia, Maria Isabel Kós Pinheiro de Andrade, Silvana Maria Frota, Maria de Fátima Miranda, Raphael Mendonça Guimarães, Armando Meyer
Purpose: To estimate the degree of association between exposure to pesticides and the risk of alteration in cochlear function in students exposed to pesticides. Methods: This study evaluated individuals aged 8 to 30, of both genders, residing in an area of heavy pesticide use in the town of Nova Friburgo, Rio de Janeiro State. Each study participant answered a questionnaire to assess their degree of pesticide exposure. To evaluate cochlear function, audiometry exams were performed, including transient evoked otoacoustic emissions (TEOAEs) and distortion product otoacoustic emissions (DPOAEs)...
May 15, 2017: CoDAS
https://www.readbyqxmd.com/read/28538522/frequency-specificity-and-left-ear-advantage-of-medial-olivocochlear-efferent-modulation-a-study-based-on-stimulus-frequency-otoacoustic-emission
#2
Dongjia Xing, Qin Gong
The medial olivocochlear (MOC) bundle is an auditory nucleus that projects efferent nerve fibers to the outer hair cells (OHCs) for synaptic innervation. The aim of the present study was to investigate the possible existence of frequency and ear specificity in MOC efferent modulation, as well as how MOC activation influences cochlear tuning. Stimulus frequency otoacoustic emissions (SFOAEs) were used to study MOC efferent modulation. Therefore, the current experiment was designed to compare the degree of SFOAE suppression in the both ears of 20 individuals at 1, 2, 4, and 8 kHz...
May 19, 2017: Neuroreport
https://www.readbyqxmd.com/read/28538471/foreign-body-response-to-silicone-in-cochlear-implant-electrodes-in-the-human
#3
Jennifer T O'Malley, Barbara J Burgess, Donald Galler, Joseph B Nadol
HYPOTHESIS: Silicone as part of a cochlear implant electrode may be responsible for a foreign body response in the human. BACKGROUND: Clinical evidence of a foreign body response to a cochlear implant has been reported. In a previous study, particulate material found within the fibrous sheath and within macrophages surrounding a cochlear implant has been identified as being consistent with platinum. However, to date, there has been no histologic evidence of a role for silicone in this cellular immune response...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28538470/progression-of-unilateral-hearing-loss-in-children-with-and-without-ipsilateral-cochlear-nerve-canal-stenosis-a-hazard-analysis
#4
Patricia L Purcell, Justin R Shinn, Scott S Coggeshall, Grace Phillips, Angelisa Paladin, Kathleen C Y Sie, David L Horn
OBJECTIVE: To investigate the risk of hearing loss progression in each ear among children with unilateral hearing loss associated with ipsilateral bony cochlear nerve canal (BCNC) stenosis. SETTING: Tertiary pediatric referral center. PATIENTS: Children diagnosed with unilateral hearing loss who had undergone temporal bone computed tomography imaging and had at least 6 months of follow-up audiometric testing were identified from a prospective audiological database...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28538469/an-assessment-of-the-clinical-acceptability-of-direct-acoustic-cochlear-implantation-for-adults-with-advanced-otosclerosis-in-the-united-kingdom
#5
Pádraig Thomas Kitterick, Guna Reddy-Kolanu, David Baguley, Jeremey Lavy, Peter Monksfield, Rupan Banga, Jaydip Ray, Ad Snik, Gerard M O'Donoghue
HYPOTHESIS: Assess the clinical acceptability of direct acoustic cochlear implantation for patients with advanced otosclerosis and the support for conducting a controlled trial of its effectiveness in the United Kingdom. BACKGROUND: Emerging evidence supports the efficacy of direct acoustic cochlear implantation in patients with advanced otosclerosis whose needs cannot be managed using the combination of stapes surgery and hearing aids. A controlled trial would provide evidence for its effectiveness and cost-effectiveness to healthcare commissioners...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28538468/hearing-preservation-in-pediatric-cochlear-implantation
#6
Matthew L Carlson, Neil S Patel, Nicole M Tombers, Melissa D DeJong, Alyce I Breneman, Brian A Neff, Colin L W Driscoll
OBJECTIVE: Currently, there is a paucity of literature evaluating hearing preservation outcomes in children following cochlear implantation. The objective of the current study is to report pediatric hearing preservation results following cochlear implantation with conventional full-length electrodes. STUDY DESIGN: Retrospective review (2000-2016). SETTING: Tertiary referral center. PATIENTS: All pediatric patients with a ≤ 75 dB preoperative low-frequency pure tone average (LFPTA; 250-500 Hz average), who underwent cochlear implantation with a conventional length electrode...
May 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28534734/the-impact-of-single-sided-deafness-upon-music-appreciation
#7
Sarah Meehan, Elizabeth A Hough, Gemma Crundwell, Rachel Knappett, Mark Smith, David M Baguley
BACKGROUND: Many of the world's population have hearing loss in one ear; current statistics indicate that up to 10% of the population may be affected. Although the detrimental impact of bilateral hearing loss, hearing aids, and cochlear implants upon music appreciation is well recognized, studies on the influence of single-sided deafness (SSD) are sparse. PURPOSE: We sought to investigate whether a single-sided hearing loss can cause problems with music appreciation, despite normal hearing in the other ear...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28534729/self-selection-of-frequency-tables-with-bilateral-mismatches-in-an-acoustic-simulation-of-a-cochlear-implant
#8
Matthew B Fitzgerald, Ksenia Prosolovich, Chin-Tuan Tan, E Katelyn Glassman, Mario A Svirsky
BACKGROUND: Many recipients of bilateral cochlear implants (CIs) may have differences in electrode insertion depth. Previous reports indicate that when a bilateral mismatch is imposed, performance on tests of speech understanding or sound localization becomes worse. If recipients of bilateral CIs cannot adjust to a difference in insertion depth, adjustments to the frequency table may be necessary to maximize bilateral performance. PURPOSE: The purpose of this study was to examine the feasibility of using real-time manipulations of the frequency table to offset any decrements in performance resulting from a bilateral mismatch...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28534710/systematic-review-radiological-and-histological-evidence-of-cochlear-implant-insertion-trauma-in-adult-patients
#9
Emma Hoskison, Scott Mitchell, Chris Coulson
INTRODUCTION: Cochlear implantation (CI) has developed from its origins in the 1980s. Initially, CI was for profound bilateral hearing impairment. However, candidacy for CI have become more widespread in recent years with unilateral implantation and an emphasis on hearing preservation. Evidence supports full electrode insertion in an atraumatic fashion into the scala tympani (ST) provides optimal hearing outcomes. The main aim of this systematic review was to elucidate the degree of trauma associated with CI insertion...
May 23, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28534686/hashimoto-s-thyroiditis-and-vestibular-dysfunction
#10
Giuseppe Chiarella, Diego Russo, Fabio Monzani, Claudio Petrolo, Bruno Fattori, Giuseppe Pasqualetti, Ettore Cassandro, Giuseppe Costante
The aim of this review was to analyze the existing literature concerning the relationship between Hashimoto's thyroiditis (HT) and vestibular dysfunction. METHODS: We used electronic databases (PubMed, EMBASE, Cochrane Library) to search and collect all published articles about association between HT and vestibular disorders. RESULTS: Several observational and retrospective studies have postulated a relationship of thyroid autoimmunity and vestibular disorders. In most cases, an appropriate control group was lacking and the impact of thyroid functional status could not precisely be established...
May 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28534045/compound-heterozygous-mutations-in-masp1-in-a-deaf-child-with-absent-cochlear-nerves
#11
Elina Kari, Isabelle Schrauwen, Lorida Llaci, Laurel M Fisher, John L Go, Marcus Naymik, James A Knowles, Matthew J Huentelman, Rick A Friedman
No abstract text is available yet for this article.
June 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28533009/comparison-of-implant-stability-measurement-devices-for-bone-anchored-hearing-aid-systems
#12
Lindsey Westover, Gary Faulkner, William Hodgetts, Don Raboud
STATEMENT OF PROBLEM: The success of implants for bone-anchored hearing aids (BAHA) relies on proper osseointegration at the bone-implant interface. Clinical evaluation of implant stability is important in prescribing loading, identifying the risk of failure, and monitoring the long-term health of the implant. PURPOSE: The purpose of this in vitro study was to evaluate 2 measurement systems for BAHA implant stability: the most commonly used, Osstell implant stability quotient (ISQ), and a newly developed advance system for implant stability testing (ASIST)...
May 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28532627/regenerative-medicine-in-hearing-recovery
#13
REVIEW
Edi Simoni, Giulia Orsini, Milvia Chicca, Simone Bettini, Valeria Franceschini, Alessandro Martini, Laura Astolfi
Hearing loss, or deafness, affects 360 million people worldwide of which about 32 million are children. Deafness is irreversible when it involves sensory hair cell death because the regenerative ability of these cells is lost in mammals after embryo development. The therapeutic strategies for deafness include hearing aids and/or implantable devices. However, not all patients are eligible or truly benefit from these medical devices. Regenerative medicine based on stem cell application could play a role in both improvement of extant medical devices and in vivo recovery of auditory function by regeneration of inner ear cells and neurons...
May 19, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28532185/tone-perception-in-mandarin-speaking-children-with-cochlear-implants
#14
Gang Li, Sigfrid D Soli, Yun Zheng
OBJECTIVE: To evaluate the effects of implant age and duration of implantation on development of Mandarin tone perception in paediatric cochlear implant recipients. DESIGN: Retrospective cross-sectional evaluation of tone perception, as assessed with the Mandarin Early Speech Perception test at 3, 6, 12, 24, 36 and 48 months after activation. STUDY SAMPLE: A total of 143 subjects, 60 girls and 83 boys unilaterally implanted at 1-4 years of age comprised the sample...
May 22, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28530663/a-cerebellum-like-circuit-in-the-auditory-system-cancels-responses-to-self-generated-sounds
#15
Shobhit Singla, Conor Dempsey, Richard Warren, Armen G Enikolopov, Nathaniel B Sawtell
The dorsal cochlear nucleus (DCN) integrates auditory nerve input with a diverse array of sensory and motor signals processed in circuitry similar to that of the cerebellum. Yet how the DCN contributes to early auditory processing has been a longstanding puzzle. Using electrophysiological recordings in mice during licking behavior, we show that DCN neurons are largely unaffected by self-generated sounds while remaining sensitive to external acoustic stimuli. Recordings in deafened mice, together with neural activity manipulations, indicate that self-generated sounds are cancelled by non-auditory signals conveyed by mossy fibers...
May 22, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28530226/corrigendum-cochlear-gene-therapy-with-ancestral-aav-in-adult-mice-complete-transduction-of-inner-hair-cells-without-cochlear-dysfunction
#16
Jun Suzuki, Ken Hashimoto, Ru Xiao, Luk H Vandenberghe, M Charles Liberman
This corrects the article DOI: 10.1038/srep45524.
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28529479/in-patients-undergoing-cochlear-implantation-psychological-burden-affects-tinnitus-and-the-overall-outcome-of-auditory-rehabilitation
#17
Petra Brüggemann, Agnieszka J Szczepek, Katharina Klee, Stefan Gräbel, Birgit Mazurek, Heidi Olze
Cochlear implantation (CI) is increasingly being used in the auditory rehabilitation of deaf patients. Here, we investigated whether the auditory rehabilitation can be influenced by the psychological burden caused by mental conditions. Our sample included 47 patients who underwent implantation. All patients were monitored before and 6 months after CI. Auditory performance was assessed using the Oldenburg Inventory (OI) and Freiburg monosyllable (FB MS) speech discrimination test. The health-related quality of life was measured with Nijmegen Cochlear implantation Questionnaire (NCIQ) whereas tinnitus-related distress was measured with the German version of Tinnitus Questionnaire (TQ)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28527538/masking-release-with-changing-fundamental-frequency-electric-acoustic-stimulation-resembles-normal-hearing-subjects
#18
Alice Barbara Auinger, Dominik Riss, Rudolfs Liepins, Tobias Rader, Tilman Keck, Thomas Keintzel, Alexandra Kaider, Wolf-Dieter Baumgartner, Wolfgang Gstoettner, Christoph Arnoldner
It has been shown that patients with electric acoustic stimulation (EAS) perform better in noisy environments than patients with a cochlear implant (CI). One reason for this could be the preserved access to acoustic low-frequency cues including the fundamental frequency (F0). Therefore, our primary aim was to investigate whether users of EAS experience a release from masking with increasing F0 difference between target talker and masking talker. The study comprised 29 patients and consisted of three groups of subjects: EAS users, CI users and normal-hearing listeners (NH)...
May 11, 2017: Hearing Research
https://www.readbyqxmd.com/read/28526871/electro-tactile-stimulation-enhances-cochlear-implant-speech-recognition-in-noise
#19
Juan Huang, Benjamin Sheffield, Payton Lin, Fan-Gang Zeng
For cochlear implant users, combined electro-acoustic stimulation (EAS) significantly improves the performance. However, there are many more users who do not have any functional residual acoustic hearing at low frequencies. Because tactile sensation also operates in the same low frequencies (<500 Hz) as the acoustic hearing in EAS, we propose electro-tactile stimulation (ETS) to improve cochlear implant performance. In ten cochlear implant users, a tactile aid was applied to the index finger that converted voice fundamental frequency into tactile vibrations...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#20
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
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