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https://www.readbyqxmd.com/read/28431308/hyperexcitability-of-inferior-colliculus-and-acoustic-startle-reflex-with-age-related-hearing-loss
#1
Binbin Xiong, Ana'am Alkharabsheh, Senthilvelan Manohar, Guang-Di Chen, Ning Yu, Xiaoming Zhao, Richard Salvi, Wei Sun
Chronic tinnitus and hyperacusis often develop with age-related hearing loss presumably due to aberrant neural activity in the central auditory system (CAS) induced by cochlear pathologies. However, the full spectrum of physiological changes that occur in the CAS as a result age-related hearing loss are still poorly understood. To address this issue, neurophysiological measures were obtained from the cochlea and the inferior colliculus (IC) of 2, 6 and 12 month old C57BL/6J mice, a mouse model for early age-related hearing loss...
March 27, 2017: Hearing Research
https://www.readbyqxmd.com/read/28430993/a-multi-systemic-mitochondrial-disorder-due-to-a-dominant-p-y955h-disease-variant-in-dna-polymerase-gamma
#2
Triinu Siibak, Paula Clemente, Ana Bratic, Helene Bruhn, Timo E S Kauppila, Bertil Macao, Florian A Schober, Nicole Lesko, Rolf Wibom, Karin Naess, Inger Nennesmo, Anna Wedell, Bradley Peter, Christoph Freyer, Maria Falkenberg, Anna Wredenberg
Mutations in the mitochondrial DNA polymerase, POLG, are associated with a variety of clinical presentations, ranging from early onset fatal brain disease in Alpers syndrome to chronic progressive external ophthalmoplegia. The majority of mutations are linked with disturbances of mitochondrial DNA (mtDNA) integrity and maintenance. On a molecular level, depending on their location within the enzyme, mutations either lead to mtDNA depletion or the accumulation of multiple mtDNA deletions, and in some cases these molecular changes can be correlated to the clinical presentation...
April 17, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28430293/three-cases-of-ectopic-sphenoid-sinus-pituitary-adenoma
#3
Ernest Jan Bobeff, Karol Wiśniewski, Wielisław Papierz, Ludomir Stefańczyk, Dariusz Jan Jaskólski
<i><b>Introduction</b>: Ectopic sphenoid sinus pituitary adenoma is a rare tumour originating from embryologic remnants of Rathke's pouch. Although it is considered a clinically benign neoplasm, necrosis is encountered in 25% of cases and it can invade adjacent bone structures. <b>Aims</b>: To establish clinical, radiological and histopathological features of ectopic sphenoid sinus pituitary adenoma. <b>Material and methods: </b> Analysis of three cases: two females and one man, aged 61-70...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28429364/application-of-gene-detection-technique-in-the-antenatal-diagnosis-of-hereditary-hearing-loss
#4
Y Fang, M-S Gu, F Suo, C-X Wang, X-H Liu, F-M Liu
OBJECTIVE: Gene chip and gene sequencing techniques were used to detect the main pathogenic genes in pregnant women with hereditary hearing loss. PATIENTS AND METHODS: From May 2015 to May 2016, 1080 pregnant in Xuzhou Maternal and Child Health Hospital were enrolled in this study. Women age range was 18 to 40 years. 4 genes and 9 mutation sites, including 4 sites (35delG, 176, 235delC and 299) in GJB2 gene, 2 sites (2168A>G and IVS-7-2A>G) in SLC26A4 (PDS) gene, 2 sites (1494C>T and 1555A>G) in 12s rRNA gene and 1 site (538C>T) in GJB3 gene, were detected using the GeeDom® 9-item hereditary hearing loss gene detection kit...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28429177/learning-from-one-s-own-errors-and-those-of-others
#5
Janet Metcalfe, Judy Xu
Three experiments investigated the effects of making errors oneself, as compared to just hearing the correct answer without error generation, hearing another person make an error, or being "on-the-hook," that is, possibly but not necessarily being the person who would be "called-on" to give a response. In all three experiments, generating either an error of commission or generating the correct response, oneself, out loud, compared to being a person who heard another's commission errors (or correct responses), was beneficial for later recall of the correct answer...
April 20, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28428906/tbc1d24-mutations-in-a-sibship-with-multifocal-polymyoclonus
#6
Adeline Ngoh, Jose Bras, Rita Guerreiro, Amy McTague, Joanne Ng, Esther Meyer, W Kling Chong, Stewart Boyd, Linda MacLellan, Martin Kirkpatrick, Manju A Kurian
BACKGROUND: Advances in molecular genetic technologies have improved our understanding of genetic causes of rare neurological disorders with features of myoclonus. CASE REPORT: A family with two affected siblings, presenting with multifocal polymyoclonus and neurodevelopmental delay, was recruited for whole-exome sequencing following unyielding diagnostic neurometabolic investigations. Compound heterozygous mutations in TBC1D24, a gene previously associated with various epilepsy phenotypes and hearing loss, were identified in both siblings...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28428741/assessing-auditory-processing-deficits-in-tinnitus-and-hearing-impaired-patients-with-the-auditory-behavior-questionnaire
#7
Isabel Diges, Francisco Simón, Pedro Cobo
Background and Purpose: Auditory processing disorders (APD), tinnitus and hearing loss (HL) are typical issues reported by patients in audiologic clinics. These auditory impairments can be concomitant or mutually excluding. APD are not necessarily accompanied by significant HL, whereas many adults exhibit peripheral HL and typical cognitive deficits often associated with APD. Since HL, tinnitus and APD affects to several parts of the ascending auditory pathway from the periphery to the auditory cortex, there could be some interrelationship between them...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28428247/induction-of-cell-death-and-gain-of-function-properties-of-connexin26-mutants-predict-severity-of-skin-disorders-and-hearing-loss
#8
Eric R Press, Qing Shao, John J Kelly, Katrina Chin, Anton Alaga, Dale W Laird
Connexin26 (Cx26) is a gap junction protein that oligomerizes in the cell to form hexameric transmembrane channels called connexons. Cell surface connexons dock between adjacent cells to allow for gap junctional intercellular communication. Numerous autosomal dominant mutations in the Cx26 encoding GJB2 gene lead to many skin disorders and sensorineural hearing loss. Although some insights have been gained into the pathogenesis of these diseases, it is not fully understood how distinct GJB2 mutations result in hearing loss alone or in skin pathologies with comorbid hearing loss...
April 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28428227/mechanisms-in-endocrinology-the-multiple-facets-of-gh-lessons-from-lifetime-untreated-isolated-gh-deficiency-due-to-ghrh-receptor-mutation
#9
Manuel Aguiar-Oliveira, Anita Ho Souza, Carla R Oliveira, Viviane C Campos, Luiz A Oliveira-Neto, Roberto Salvatori
Twenty years ago, we described a kindred of 105 individuals with isolated GH deficiency (IGHD) in Itabaianinha County, in Brazilian northeast, due to a homozygous mutation in the GH-releasing hormone receptor gene. These subjects exhibit markedly reduced GH responsiveness to stimulatory tests, and anterior pituitary hypoplasia. Serum concentrations of IGF-I, IGF binding protein type 3, and the acid-labile subunit are markedly reduced, with a lesser reduction of IGF-II. The most striking physical findings of these IGHD individuals are the proportionate short stature, doll facies, high-pitched voice, and visceral obesity with reduced fat free mass...
April 20, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28428154/bias-in-medicine-in-the-context-of-the-film-aligarh
#10
Aiswarya Sasi
In today's world, I feel another sin needs to be added to the list of the seven deadly sins, viz the sin of intolerance. We hear this term on the news every other day and see society display this attitude more often than not. While the movie Aligarh raised myriad social issues, as a medical student, I would like to speak of one in particular - the influence of stigma on healthcare.
March 21, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/28427410/long-term-follow-up-after-stereotactic-radiosurgery-of-intracanalicular-acoustic-neurinoma
#11
Daniel Rueß, Lea Pöhlmann, Stefan Grau, Christina Hamisch, Alexandra Hellerbach, Harald Treuer, Martin Kocher, Maximilian I Ruge
BACKGROUND: The management of solely intracanalicular acoustic neurinoma (iAN) includes observation, microsurgical resection and radiation therapy. Treatment goals are long-term tumor control, hearing preservation and concurrently low side-effects. Stereotactic radiosurgery (SRS) has evolved as an alternative first-line treatment for small AN. Here we report about the long-term follow-up of a unique cohort of patients with iAN after LINAC or Cyberknife® based SRS. METHODS: In this single center retrospective analysis, we included all patients with iAN who underwent single session LINAC or Cyberknife® based SRS between 1993 and 2015, and who had a minimum follow-up period of six weeks...
April 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28426992/factors-affecting-sound-energy-absorbance-in-acute-otitis-media-model-of-chinchilla
#12
Xiying Guan, Thomas W Seale, Rong Z Gan
Acute otitis media (AOM) is a rapid-onset infection of the middle ear which results in middle ear pressure (MEP), middle ear effusion (MEE), and structural changes in middle ear tissues. Previous studies from our laboratory have identified that MEP, MEE, and middle ear structural changes are three factors affecting tympanic membrane (TM) mobility and hearing levels (Guan et al., 2014, 2013). Sound energy reflectance or absorbance (EA) is a diagnostic tool increasingly used in clinical settings for the identification of middle ear diseases...
April 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28426889/concurrent-and-longitudinal-predictors-of-reading-for-deaf-and-hearing-children-in-primary-school
#13
Margaret Harris, Emmanouela Terlektsi, Fiona Elizabeth Kyle
Forty-one children with severe-profound prelingual hearing loss were assessed on single word reading, reading comprehension, English vocabulary, phonological awareness and speechreading at three time points, 1 year apart (T1-T3). Their progress was compared with that of a group of hearing children of similar nonverbal IQ, initially reading at the same level. Single word reading improved at each assessment point for the deaf children but there was no growth in reading comprehension from T2 to T3. There were no differences between children with cochlear implants and those with hearing aids on either reading measure but orally educated children had higher scores than children who signed in the classroom...
April 1, 2017: Journal of Deaf Studies and Deaf Education
https://www.readbyqxmd.com/read/28426888/adolescent-depression-differential-symptom-presentations-in-deaf-and-hard-of-hearing-youth-using-the-patient-health-questionnaire-9
#14
Melanie L Bozzay, Kimberly N O'Leary, Alessandro S De Nadai, Kim Gryglewicz, Gabriela Romero, Marc S Karver
The present study examined differences in symptom presentation in screening for pediatric depression via evaluation of the Patient Health Questionnaire-9 (PHQ-9). In particular, we examined whether PHQ-9 items function differentially among deaf and hard-of-hearing (DHH; n = 75) and hearing (n = 75) youth based on participants recruited from crisis assessment services. Multiple indicators multiple causes models were used to examine whether items of the PHQ-9 functioned differently between groups as well as whether there were group differences in the mean severity of depressive symptoms...
April 1, 2017: Journal of Deaf Studies and Deaf Education
https://www.readbyqxmd.com/read/28426851/unilateral-hearing-loss-and-otorrhea
#15
Mark S Costello, Shawn Stevens, Ravi N Samy
No abstract text is available yet for this article.
April 20, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28426234/the-otogl-p-arg925-variant-is-associated-with-moderate-hearing-loss-in-a-syrian-nonconsanguineous-family
#16
Rana Barake, Samer Abou-Rizk, Georges Nemer, Marc Bassim
AIMS: To screen for the genetic basis of congenital hearing loss in a Syrian family. METHODS: A Syrian patient living in Lebanon presented with moderate congenital hearing loss. The patient's large nonconsanguineous family was recruited. DNA was extracted from blood samples and sent for whole-exome sequencing. A detailed clinical examination along with audiograms was obtained for all subjects. RESULTS: Hearing loss was noted to be mild to moderate in the low and mid frequencies, sloping to moderate to severe in the high frequencies for all affected members...
April 20, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28425912/how-spatial-release-from-masking-may-fail-to-function-in-a-highly-directional-auditory-system
#17
Norman Lee, Andrew C Mason
Spatial release from masking (SRM) occurs when spatial separation between a signal and masker decreases masked thresholds. The mechanically-coupled ears of Ormia ochracea are specialized for hyperacute directional hearing, but the possible role of SRM, or whether such specializations exhibit limitations for sound source segregation, is unknown. We recorded phonotaxis to a cricket song masked by band-limited noise. With a masker, response thresholds increased and localization was diverted away from the signal and masker...
April 20, 2017: ELife
https://www.readbyqxmd.com/read/28425563/differences-in-interregional-brain-connectivity-in-children-with-unilateral-hearing-loss
#18
Matthew E Jung, Miranda Colletta, Rebecca Coalson, Bradley L Schlaggar, Judith E C Lieu
OBJECTIVES: To identify functional network architecture differences in the brains of children with unilateral hearing loss (UHL) using resting-state functional-connectivity magnetic resonance imaging (rs-fcMRI). STUDY DESIGN: Prospective observational study. METHODS: Children (7 to 17 years of age) with severe to profound hearing loss in one ear, along with their normal hearing (NH) siblings, were recruited and imaged using rs-fcMRI. Eleven children had right UHL; nine had left UHL; and 13 had normal hearing...
April 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28424637/listening-niches-across-a-century-of-popular-music
#19
Carol Lynne Krumhansl
This article investigates the contexts, or "listening niches", in which people hear popular music. The study spanned a century of popular music, divided into 10 decades, with participants born between 1940 and 1999. It asks about whether they know and like the music in each decade, and their emotional reactions. It also asks whether the music is associated with personal memories and, if so, with whom they were listening, or whether they were listening alone. Finally, it asks what styles of music they were listening to, and the music media they were listening with, in different periods of their lives...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28424636/the-neural-basis-of-speech-perception-through-lipreading-and-manual-cues-evidence-from-deaf-native-users-of-cued-speech
#20
Mario Aparicio, Philippe Peigneux, Brigitte Charlier, Danielle Balériaux, Martin Kavec, Jacqueline Leybaert
We present here the first neuroimaging data for perception of Cued Speech (CS) by deaf adults who are native users of CS. CS is a visual mode of communicating a spoken language through a set of manual cues which accompany lipreading and disambiguate it. With CS, sublexical units of the oral language are conveyed clearly and completely through the visual modality without requiring hearing. The comparison of neural processing of CS in deaf individuals with processing of audiovisual (AV) speech in normally hearing individuals represents a unique opportunity to explore the similarities and differences in neural processing of an oral language delivered in a visuo-manual vs...
2017: Frontiers in Psychology
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