keyword
MENU ▼
Read by QxMD icon Read
search

OAE

keyword
https://www.readbyqxmd.com/read/27873084/distortion-product-otoacoustic-emission-measured-below-300%C3%A2-hz-in-normal-hearing-human-subjects
#1
Anders T Christensen, Rodrigo Ordoñez, Dorte Hammershøi
Physiological noise levels in the human ear canal often exceed naturally low levels of otoacoustic emissions (OAEs) near the threshold of hearing. Low-frequency noise, and electronic filtering to cope with it, has effectively limited the study of OAE to frequencies above about 500 Hz. Presently, a custom-built low-frequency acoustic probe was put to use in 21 normal-hearing human subjects (of 34 recruited). Distortion-product otoacoustic emission (DPOAE) was measured in the enclosed ear canal volume as the response to two simultaneously presented tones with frequencies f 1 and f 2...
November 21, 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27863646/regenerative-efficacy-of-mesenchymal-stromal-cells-from-human-placenta-in-sensorineural-hearing-loss
#2
Kicheol Kil, Mi Young Choi, Ji Sun Kong, Woo Jin Kim, Kyoung Ho Park
INTRODUCTION: Hearing loss is a common chronic disorder characterized by decline of auditory function. The global population have suffered from deafness and the transplantation of stem cells is regarded as a therapeutic strategy for this disease. METHODS: We collected placenta from a total of 13 samples of full term pregnant women and isolated MSCs derived from human placenta and transplanted MSCs on deaf animal model. The normal group and the sensorineural hearing loss (SNHL) group and the experimental (transplanted MSCs) group were compared and estimated hearing level using auditory brainstem response (ABR) recordings and the otoacoustic emission (OAE) test...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27863036/newborn-hearing-screening-in-prematurity-fate-of-screening-failures-and-auditory-maturation
#3
Hyung Chae Yang, Chung Man Sung, Dong Joo Shin, Yong Beom Cho, Chul Ho Jang, Hyong-Ho Cho
OBJECTIVES: The purpose of this study was to identify delayed auditory maturation and the fate of premature infants who failed the newborn hearing screening (NHS) in neonatal intensive care unit. MATERIALS AND METHODS: A total of 1,375 neonates underwent NHS using the transient evoked otoacoustic emission (TEOAE) in a tertiary hospital between 2007 and 2010 according to the Joint Committee on Infant Hearing Guidelines. In addition, a structured telephone survey was given to caregivers of infants who were lost to follow-up NHS...
November 12, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27849126/tinnitus-and-leisure-noise
#4
Warwick Williams, Lyndal Carter
OBJECTIVE: To study the relationship of life-time noise exposure and experience of tinnitus. DESIGN: Audiometric measures included otoscopy, pure tone air- and bone-conduction hearing threshold levels (HTL) and otoacoustic emissions (OAEs). Participants completed questionnaires including demographic information, past hearing health, history of participation in loud leisure activities, and attitudes to noise. STUDY SAMPLE: A representative sample (1435) of the young (11-35 years old) Australian population...
November 16, 2016: International Journal of Audiology
https://www.readbyqxmd.com/read/27833865/audiological-and-electrophysiological-changes-in-patients-with-vitiligo
#5
Richa Arya, Sanjay Kumar Munjal, Naresh Kumar Panda, Davinder Prasad
The study was conducted to evaluate the audiological and electrophysiological findings in patients with Vitiligo and to compare the findings with otologically and audiologically normal controls. Study group included 50 subjects (25 Males, 25 Females) with Vitiligo (Mean age-27.4 years) and control group contained 40 age-matched normal hearing subjects. Pure tone audiometry (PTA) with extended high frequency audiometry, Otoacoustic emissions (OAEs), Tympanometry, Auditory brainstem responses (ABR) and Middle latency responses (MLR) were conducted in all subjects...
December 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/27798720/electrically-evoked-medial-olivocochlear-efferent-effects-on-stimulus-frequency-otoacoustic-emissions-in-guinea-pigs
#6
Maria A Berezina-Greene, John J Guinan
Stimulus frequency otoacoustic emissions (SFOAEs) are produced by cochlear irregularities reflecting energy from the peak region of the traveling wave (TW). Activation of medial olivocochlear (MOC) efferents reduces cochlear amplification and otoacoustic emissions (OAEs). In other OAEs, MOC activation can produce enhancements. The extent of MOC enhancements of SFOAEs has not been previously studied. In anesthetized guinea pigs, we electrically stimulated MOC fibers and recorded their effects on SFOAEs. MOC stimulation mostly inhibited SFOAEs but sometimes enhanced them...
October 31, 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27796594/estimation-of-round-trip-outer-middle-ear-gain-using-dpoaes
#7
Maryam Naghibolhosseini, Glenis R Long
The reported research introduces a noninvasive approach to estimate round-trip outer-middle ear pressure gain using distortion product otoacoustic emissions (DPOAEs). Our ability to hear depends primarily on sound waves traveling through the outer and middle ear toward the inner ear. The role of the outer and middle ear in sound transmission is particularly important for otoacoustic emissions (OAEs), which are sound signals generated in a healthy cochlea and recorded by a sensitive microphone placed in the ear canal...
October 28, 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27792827/evaluation-of-transiently-evoked-otoacoustic-emissions-and-auditory-brainstem-responses-in-patients-with-multiple-sclerosis
#8
Emre Kaytancı, O Ilkay Ozdamar, Gul Ozbilen Acar, Muhammet Tekin
Multiple sclerosis (MS) is an inflammatory and demyelinating disease of the central nervous system. This prospective study was planned to evaluate these changes through brainstem evoked response audiometry (BERA) latency abnormalities and otoacoustic emissions (OAE). This study was performed between September 2009 and May 2010. A total of 160 recordings of BERA and OAE were examined, which were obtained from 80 ears of 40 participants. Twenty of these were MS patients and 20 were healthy volunteers in the control group...
October 2016: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/27757544/marine-ecosystem-resilience-during-extreme-deoxygenation-the-early-jurassic-oceanic-anoxic-event
#9
Bryony A Caswell, Christopher L J Frid
Global warming during the Early Jurassic, and associated widespread ocean deoxygenation, was comparable in scale with the changes projected for the next century. This study quantifies the impact of severe global environmental change on the biological traits of marine communities that define the ecological roles and functions they deliver. We document centennial-millennial variability in the biological trait composition of Early Jurassic (Toarcian) seafloor communities and examine how this changed during the event using biological traits analysis...
October 18, 2016: Oecologia
https://www.readbyqxmd.com/read/27749923/differential-adverse-event-profiles-associated-with-bcg-as-a-preventive-tuberculosis-vaccine-or-therapeutic-bladder-cancer-vaccine-identified-by-comparative-ontology-based-vaers-and-literature-meta-analysis
#10
Jiangan Xie, Christopher Codd, Kevin Mo, Yongqun He
M. bovis strain Bacillus Calmette-Guérin (BCG) has been the only licensed live attenuated vaccine against tuberculosis (TB) for nearly one century and has also been approved as a therapeutic vaccine for bladder cancer treatment since 1990. During its long time usage, different adverse events (AEs) have been reported. However, the AEs associated with the BCG preventive TB vaccine and therapeutic cancer vaccine have not been systematically compared. In this study, we systematically collected various BCG AE data mined from the US VAERS database and PubMed literature reports, identified statistically significant BCG-associated AEs, and ontologically classified and compared these AEs related to these two types of BCG vaccine...
2016: PloS One
https://www.readbyqxmd.com/read/27694888/statistical-and-ontological-analysis-of-adverse-events-associated-with-monovalent-and-combination-vaccines-against-hepatitis-a-and-b-diseases
#11
Jiangan Xie, Lili Zhao, Shangbo Zhou, Yongqun He
Vaccinations often induce various adverse events (AEs), and sometimes serious AEs (SAEs). While many vaccines are used in combination, the effects of vaccine-vaccine interactions (VVIs) on vaccine AEs are rarely studied. In this study, AE profiles induced by hepatitis A vaccine (Havrix), hepatitis B vaccine (Engerix-B), and hepatitis A and B combination vaccine (Twinrix) were studied using the VAERS data. From May 2001 to January 2015, VAERS recorded 941, 3,885, and 1,624 AE case reports where patients aged at least 18 years old were vaccinated with only Havrix, Engerix-B, and Twinrix, respectively...
October 3, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27686134/functioning-of-medial-olivocochlear-bundle-in-right-and-left-handed-individuals
#12
Ramesh Kaipa, U Ajith Kumar
Functional symmetry of medial olivocochlear bundle (MOCB) as a function of handedness remains to be well investigated. The current study aimed to assess the functional symmetry of MOCB through contralateral inhibition of otoacoustic emissions (OAEs) in right- and left-handed individuals. Thirteen left-handed and 13 right-handed individuals in the age range of 19-25 years participated. Behavioural experiment involved measuring speech perception in noise and vocal reaction time. Physiological experiment involved measuring the contralateral inhibition of OAEs in both the ears of participants...
August 9, 2016: Laterality
https://www.readbyqxmd.com/read/27681700/profiles-of-stimulus-frequency-otoacoustic-emissions-from-0-5-to-20%C3%A2-khz-in-humans
#13
James B Dewey, Sumitrajit Dhar
The characteristics of human otoacoustic emissions (OAEs) have not been thoroughly examined above the standard audiometric frequency range (>8 kHz). This is despite the fact that deterioration of cochlear function often starts at the basal, high-frequency end of the cochlea before progressing apically. Here, stimulus-frequency OAEs (SFOAEs) were obtained from 0.5 to 20 kHz in 23 young, audiometrically normal female adults and three individuals with abnormal audiograms, using a low-to-moderate probe level of 36 dB forward pressure level (FPL)...
September 28, 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27662644/neuropharmacological-and-neurochemical-evaluation-of-n-n-propyl-3-ethoxyquinoxaline-2-carboxamide-6n-a-novel-serotonergic-5-ht3-receptor-antagonist-for-co-morbid-antidepressant-and-anxiolytic-like-potential-using-traumatic-brain-injury-model-in-rats
#14
Shvetank Bhatt, Radhakrishnan Mahesh, Ankur Jindal, Thangaraj Devadoss
BACKGROUND: Several preclinical studies have shown that serotonergic 5-HT3 receptor antagonists play an important role in the management of neuropsychiatric disorders, such as depression and anxiety. In the present study the compound "6n" (N-n-propyl-3-ethoxyquinoxaline-2-carboxamide), a novel 5-HT3 receptor antagonist with an optimal log P (2.52) and pA2 (7.6) value was screened for its neuro-pharmacological potential in chronic rodent models of depression and anxiety named traumatic brain injury (TBI)...
September 23, 2016: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/27631508/relation-between-cochlear-mechanics-and-performance-of-temporal-fine-structure-based-tasks
#15
Sho Otsuka, Shigeto Furukawa, Shimpei Yamagishi, Koich Hirota, Makio Kashino
This study examined whether the mechanical characteristics of the cochlea could influence individual variation in the ability to use temporal fine structure (TFS) information. Cochlear mechanical functioning was evaluated by swept-tone evoked otoacoustic emissions (OAEs), which are thought to comprise linear reflection by micromechanical impedance perturbations, such as spatial variations in the number or geometry of outer hair cells, on the basilar membrane (BM). Low-rate (2 Hz) frequency modulation detection limens (FMDLs) were measured for carrier frequency of 1000 Hz and interaural phase difference (IPD) thresholds as indices of TFS sensitivity and high-rate (16 Hz) FMDLs and amplitude modulation detection limens (AMDLs) as indices of sensitivity to non-TFS cues...
December 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27619031/spontaneous-otoacoustic-emissions-in-schoolchildren
#16
W Wiktor Jedrzejczak, Krzysztof Kochanek, Edyta Pilka, Henryk Skarzynski
OBJECTIVE: Spontaneous otoacoustic emissions (SOAEs) are one of the least studied types of otoacoustic emissions (OAEs). The purpose of this study was twofold: first, to determine the prevalence of SOAEs in schoolchildren, and second to test whether there was dependence between the presence or absence of SOAEs in a subject and the corresponding level of their transiently evoked OAEs (TEOAEs). METHODS: Measurements were made on a group of normally hearing children of age 7-13 years...
October 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27598848/objective-assessment-of-subjective-tinnitus-through-contralateral-suppression-of-otoacoustic-emissions-by-white-noise-suggested-cut-off-points
#17
M Riga, A Komis, P Maragkoudakis, G Korres, V Danielides
OBJECTIVE: Normative otoacoustic emission (OAE) suppression values are currently lacking and the role of cochlear efferent innervation in tinnitus is controversial. The aim of this study was to investigate the association between tinnitus and medial olivocochlear bundle (MOCB) malfunction. Potential suppression amplitude cut-off criteria that could differentiate participants with tinnitus from those without were sought. DESIGN: Mean suppression amplitudes of transient evoked OAEs and distortion product OAEs by contralateral white noise (50 dBSL) were recorded...
December 2016: International Journal of Audiology
https://www.readbyqxmd.com/read/27570653/community-based-ontology-development-annotation-and-discussion-with-mediawiki-extension-ontokiwi-and-ontokiwi-based-ontobedia
#18
Edison Ong, Yongqun He
Hundreds of biological and biomedical ontologies have been developed to support data standardization, integration and analysis. Although ontologies are typically developed for community usage, community efforts in ontology development are limited. To support ontology visualization, distribution, and community-based annotation and development, we have developed Ontokiwi, an ontology extension to the MediaWiki software. Ontokiwi displays hierarchical classes and ontological axioms. Ontology classes and axioms can be edited and added using Ontokiwi form or MediaWiki source editor...
2016: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/27550069/effect-of-contralateral-medial-olivocochlear-feedback-on-perceptual-estimates-of-cochlear-gain-and-compression
#19
Mark D Fletcher, Katrin Krumbholz, Jessica de Boer
The active cochlear mechanism amplifies responses to low-intensity sounds, compresses the range of input sound intensities to a smaller output range, and increases cochlear frequency selectivity. The gain of the active mechanism can be modulated by the medial olivocochlear (MOC) efferent system, creating the possibility of top-down control at the earliest level of auditory processing. In humans, MOC function has mostly been measured by the suppression of otoacoustic emissions (OAEs), typically as a result of MOC activation by a contralateral elicitor sound...
December 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27541434/concurrent-genetic-and-standard-screening-for-hearing-impairment-in-9317-southern-chinese-newborns
#20
Qi Peng, Suran Huang, Yuan Liang, Keze Ma, Siping Li, Lin Yang, Wenrui Li, Qiang Ma, Qian Liu, Baimao Zhong, Xiaomei Lu
OBJECTIVE: The goal of this study was to investigate the use of concurrent genetic screening together with standard newborn hearing screening (NHS) in an effort to provide a scientific basis for the beneficial use of concurrent genetic hearing screening in newborns. Our aim was to improve the neonatal detection rate of hearing impairment and the potential for hearing loss, allowing for increased early intervention and potentially allowing for prevention of later onset hearing loss. This information could also be used to increase the effectiveness of genetic counseling regarding hearing impairment...
October 2016: Genetic Testing and Molecular Biomarkers
keyword
keyword
82332
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"