keyword
MENU ▼
Read by QxMD icon Read
search

Cochlear

keyword
https://www.readbyqxmd.com/read/28213135/genetic-variants-in-the-peripheral-auditory-system-significantly-affect-adult-cochlear-implant-performance
#1
A Eliot Shearer, Robert W Eppsteiner, Kathy Frees, Viral Tejani, Christina M Sloan-Heggen, Carolyn Brown, Paul Abbas, Camille Dunn, Marlan R Hansen, Bruce J Gantz, Richard J H Smith
BACKGROUND: Cochlear implantation is an effective habilitation modality for adults with significant hearing loss. However, post-implant performance is variable. A portion of this variance in outcome can be attributed to clinical factors. Recent physiological studies suggest that the health of the spiral ganglion also impacts post-operative cochlear implant outcomes. The goal of this study was to determine whether genetic factors affecting spiral ganglion neurons may be associated with cochlear implant performance...
February 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/28213133/the-relation-between-ecap-measurements-and-the-effect-of-rate-on-behavioral-thresholds-in-cochlear-implant-users
#2
Colette M McKay, Nicholas Smale
It has been shown that electrically evoked compound action potential (ECAP) thresholds are not sufficiently predictive of behavioral thresholds to allow their use as a totally objective method to program a cochlear implant. Previous animal studies have shown that two other ECAP parameters (the ECAP amplitude growth slope and the effect on ECAPs of changing the phase duration (PD) or interphase gap (IPG)), and the way that behavioral thresholds change with increasing rate of stimulation, are associated with cochlear health...
February 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/28211470/transient-auditory-nerve-demyelination-as-a-new-mechanism-for-hidden-hearing-loss
#3
Guoqiang Wan, Gabriel Corfas
Hidden hearing loss (HHL) is a recently described auditory neuropathy believed to contribute to speech discrimination and intelligibility deficits in people with normal audiological tests. Animals and humans with HHL have normal auditory thresholds but defective cochlear neurotransmission, that is, reduced suprathreshold amplitude of the sound-evoked auditory nerve compound action potential. Currently, the only cellular mechanism known for HHL is loss of inner hair cell synapses (synaptopathy). Here we report that transient loss of cochlear Schwann cells results in permanent auditory deficits characteristic of HHL...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28209771/hearing-loss-in-children-with-asymptomatic-congenital-cytomegalovirus-infection
#4
Tatiana M Lanzieri, Winnie Chung, Marily Flores, Peggy Blum, A Chantal Caviness, Stephanie R Bialek, Scott D Grosse, Jerry A Miller, Gail Demmler-Harrison
OBJECTIVES: To assess the prevalence, characteristics, and risk of sensorineural hearing loss (SNHL) in children with congenital cytomegalovirus infection identified through hospital-based newborn screening who were asymptomatic at birth compared with uninfected children. METHODS: We included 92 case-patients and 51 controls assessed by using auditory brainstem response and behavioral audiometry. We used Kaplan-Meier survival analysis to estimate the prevalence of SNHL, defined as ≥25 dB hearing level at any frequency and Cox proportional hazards regression analyses to compare SNHL risk between groups...
February 16, 2017: Pediatrics
https://www.readbyqxmd.com/read/28209736/pejvakin-a-candidate-stereociliary-rootlet-protein-regulates-hair-cell-function-in-a-cell-autonomous-manner
#5
Marcin Kazmierczak, Piotr Kazmierczak, Anthony W Peng, Suzan L Harris, Prahar Shah, Jean-Luc Puel, Marc Lenoir, Santos J Franco, Martin Schwander
Mutations in the Pejvakin (PJVK) gene are thought to cause auditory neuropathy and hearing loss of cochlear origin by affecting noise-induced peroxisome proliferation in auditory hair cells and neurons. Here we demonstrate that loss of pejvakin in hair cells, but not in neurons, causes profound hearing loss and outer hair cell degeneration in mice. Pejvakin binds to and co-localizes with the rootlet component TRIOBP at the base of stereocilia in injectoporated hair cells, a pattern that is disrupted by deafness-associated PJVK mutations...
February 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28209442/the-maturation-state-of-the-auditory-nerve-and-brainstem-in-rats-exposed-to-lead-acetate-and-supplemented-with-ferrous-sulfate
#6
Fernanda Zucki, Thais C Morata, Josilene L Duarte, Maria Cecília F Ferreira, Manoel H Salgado, Kátia F Alvarenga
INTRODUCTION: The literature has reported the association between lead and auditory effects, based on clinical and experimental studies. However, there is no consensus regarding the effects of lead in the auditory system, or its correlation with the concentration of the metal in the blood. OBJECTIVE: To investigate the maturation state of the auditory system, specifically the auditory nerve and brainstem, in rats exposed to lead acetate and supplemented with ferrous sulfate...
January 23, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28207627/letter-to-the-editor-regarding-oyewumi-m-wolter-ne-heon-e-gordon-ka-papsin-bc-cushing-sl-using-balance-function-to-screen-for-vestibular-impairment-in-children-with-sensorineural-hearing-loss-and-cochlear-implants
#7
https://www.readbyqxmd.com/read/28207579/expansion-of-prosodic-abilities-at-the-transition-from-babble-to-words-a-comparison-between-children-with-cochlear-implants-and-normally-hearing-children
#8
Michèle Pettinato, Ilke De Clerck, Jo Verhoeven, Steven Gillis
OBJECTIVES: This longitudinal study examined the effect of emerging vocabulary production on the ability to produce the phonetic cues to prosodic prominence in babbled and lexical disyllables of infants with cochlear implants (CI) and normally hearing (NH) infants. Current research on typical language acquisition emphasizes the importance of vocabulary development for phonological and phonetic acquisition. Children with CI experience significant difficulties with the perception and production of prosody, and the role of possible top-down effects is, therefore, particularly relevant for this population...
February 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28207578/the-impact-of-a-cochlear-implant-electrode-array-on-the-middle-ear-transfer-function
#9
David Pazen, Andreas Anagiotos, Maike Nünning, Antoniu-Oreste Gostian, Magdalene Ortmann, Dirk Beutner
OBJECTIVES: As a treatment for partial deafness with residual hearing in the lower frequency range, the combined acoustic and electric stimulation of the cochlea has become widespread. Acoustic stimulation is provided by a hearing aid's airborne sound and the electric stimulation by a cochlear implant electrode array, which may be inserted through the round window or a cochleostomy. To take advantage of that concept, it is essential to preserve residual hearing after surgery. Therefore, the intracochlear electrode array should not compromise the middle ear vibration transmission...
February 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28207576/relationship-between-peripheral-and-psychophysical-measures-of-amplitude-modulation-detection-in-cochlear-implant-users
#10
Viral D Tejani, Paul J Abbas, Carolyn J Brown
OBJECTIVE: This study investigates the relationship between electrophysiological and psychophysical measures of amplitude modulation (AM) detection. Prior studies have reported both measures of AM detection recorded separately from cochlear implant (CI) users and acutely deafened animals, but no study has made both measures in the same CI users. Animal studies suggest a progressive loss of high-frequency encoding as one ascends the auditory pathway from the auditory nerve to the cortex...
February 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28207575/health-related-quality-of-life-among-young-children-with-cochlear-implants-and-developmental-disabilities
#11
Anat Zaidman-Zait, Deirdre Curle, Janet R Jamieson, Ruth Chia, Frederick K Kozak
OBJECTIVE: The present study examined differences in health-related quality of life (HRQoL) between deaf children with cochlear implants (CI) with and without developmental disabilities (DD) and differences across HRQoL domains within both groups of children. METHODS: Ninety-two parents of children with CI aged 3-7 years participated in this cross-sectional study. Of these children, 43 had DD (i.e., CI-DD group) and 49 had no DD or chronic illness, demonstrating overall typical development (i...
February 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28204850/-biological-therapies-in-otology-german-version
#12
A Roemer, H Staecker, S Sasse, T Lenarz, A Warnecke
Millions of people worldwide suffer from hearing loss. Current treatment for patients with severe to profound hearing loss consists of cochlear implants. Providing the cochlear nerve is intact, patients generally benefit enormously from this intervention, frequently achieving significant improvements in speech comprehension. There are, however, some cases where current technology does not provide patients with adequate benefit. New therapeutic concepts based on cell transplantation and gene therapy are developing rapidly, at least in the research sector...
February 15, 2017: HNO
https://www.readbyqxmd.com/read/28203210/auditory-and-visual-electrophysiology-of-deaf-children-with-cochlear-implants-implications-for-cross-modal-plasticity
#13
David P Corina, Shane Blau, Todd LaMarr, Laurel A Lawyer, Sharon Coffey-Corina
Deaf children who receive a cochlear implant early in life and engage in intensive oral/aural therapy often make great strides in spoken language acquisition. However, despite clinicians' best efforts, there is a great deal of variability in language outcomes. One concern is that cortical regions which normally support auditory processing may become reorganized for visual function, leaving fewer available resources for auditory language acquisition. The conditions under which these changes occur are not well understood, but we may begin investigating this phenomenon by looking for interactions between auditory and visual evoked cortical potentials in deaf children...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28203144/commentary-environmental-sound-training-in-cochlear-implant-users
#14
COMMENT
Nicholas Altieri
No abstract text is available yet for this article.
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28196606/imaging-and-cell-count-in-cleared-intact-cochlea-in-the-mongolian-gerbil-using-laser-scanning-confocal-microscopy
#15
M Risoud, J Sircoglou, G Dedieu, M Tardivel, C Vincent, N-X Bonne
OBJECTIVES: To draw up a clearing protocol for Mongolian gerbil cochlea, and to assess the feasibility of quantifying and analyzing 3D cell architecture in the transparent cochleae. MATERIALS AND METHODS: Freshly dissected inner ears were prepared on a 13-day protocol: fixation, microdissection, post-fixation, decalcification, pretreatment (signal enhancement, permeabilization and blocking), fluorescent labeling (indirect immunolabeling and direct labeling), dehydration, clearing in Spalteholz solution (MSBB: methyl salicylate and benzyl benzoate) and mounting...
February 9, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28196000/population-statistics-approach-for-safety-assessment-in-robotic-cochlear-implantation
#16
Tom Williamson, Kate Gavaghan, Nicolas Gerber, Stefan Weder, Lukas Anschuetz, Franca Wagner, Christian Weisstanner, Georgios Mantokoudis, Marco Caversaccio, Stefan Weber
HYPOTHESIS: Descriptive statistics with respect to patient anatomy and image guidance accuracy can be used to assess the effectiveness of any system for minimally invasive cochlear implantation, on both an individual patient and wider population level. BACKGROUND: Minimally invasive cochlear implantation involves the drilling of a tunnel from the surface of the mastoid to cochlea, with the trajectory passing through the facial recess. The facial recess anatomy constrains the drilling path and places prohibitive accuracy requirements on the used system...
February 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28195997/development-and-validation-of-the-cochlear-implant-surgical-competency-assessment-instrument
#17
Thomas Balkany, Kaming Lo, Howard Francis, Simon Angeli, Michael Novak, William Luxford, Rodney Lusk, Heather Strader
OBJECTIVE: We present a new instrument for evaluation of cochlear implant (CI) surgical skills and review its validation process. METHODS: An instrument to assess CI surgical competency incorporated results of structured surveys of comprehensiveness sent to 30 international CI experts and US trainees. One-hundred evaluations of 28 residents, fellows, and practicing CI surgeons were completed. Surgical skills were evaluated by four experienced neurotologists (two raters per subject) using two temporal bones per subject...
February 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28195822/microflora-of-retained-intracochlear-electrodes-from-infected-cochlear-implants
#18
Varun V Varadarajan, Carolyn O Dirain, Patrick J Antonelli
Objectives Cochlear implant infections may be refractory to medical management and require device removal with subsequent reimplantation. During device removal, the intracochlear electrode array is commonly left in place to prevent obliteration of the cochlear lumen. If the electrode is colonized with pathogens, this risks contaminating the replacement implant. In this study, we compare the microorganisms detected on infected cochlear implants against those on the retained electrode using culture and microbial gene-sequencing techniques...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28194422/pharmacokinetic-properties-of-adenosine-amine-congener-in-cochlear-perilymph-after-systemic-administration
#19
Hao Chang, Ravindra S Telang, Sreevalsan Sreebhavan, Malcolm Tingle, Peter R Thorne, Srdjan M Vlajkovic
Noise-induced hearing loss (NIHL) is a global health problem affecting over 5% of the population worldwide. We have shown previously that acute noise-induced cochlear injury can be ameliorated by administration of drugs acting on adenosine receptors in the inner ear, and a selective A1 adenosine receptor agonist adenosine amine congener (ADAC) has emerged as a potentially effective treatment for cochlear injury and resulting hearing loss. This study investigated pharmacokinetic properties of ADAC in rat perilymph after systemic (intravenous) administration using a newly developed liquid chromatography-tandem mass spectrometry detection method...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28193110/pontine-tegmental-cap-dysplasia-in-an-extremely-preterm-infant-and-review-of-the-literature
#20
Sylvie Picker-Minh, Sebastian Hartenstein, Hans Proquitté, Sebastian Fröhler, Vera Raile, Nadine Kraemer, Sarah Apeshiotis, Michael Leipoldt, Karim D Kalache, Deborah Morris-Rosendahl, Eugen Boltshauser, Wei Chen, Angela M Kaindl
Pontine tegmental cap dysplasia is a rare hindbrain malformation syndrome with a hypoplastic pons, a tissue protrusion into the fourth ventricle, and cranial nerve dysfunction. We here report clinical, imaging, and genetic findings of the first extremely low-birth-weight preterm infant with pontine tegmental cap dysplasia born at 25 weeks of gestation and provide an overview of 29 sporadic cases. A prenatally diagnosed hypoplastic and rostrally shifted cerebellum was indicative of a hindbrain defect and later identified as an early sign of pontine tegmental cap dysplasia in our patient...
March 2017: Journal of Child Neurology
keyword
keyword
69596
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"