MedWorm: Audiology

Relationship between the Degree of Endolymphatic Hydrops and Electrocochleography

Audiology and Neurotology — Mon, 16 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:254-260 (DOI:10.1159/000258681) (Source: Audiology and Neurotology)

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Differentiating Malingering Balance Disorder Patients from Healthy Controls, Compensated Unilateral Vestibular Loss, and Whiplash Patients Using Stance and Gait Posturography

Audiology and Neurotology — Mon, 16 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:261-272 (DOI:10.1159/000258682) (Source: Audiology and Neurotology)

Early print concepts: insights from work with young deaf children

Deafness and Education International — Sat, 14 Nov 2009 00:00:00 +0100

This study demonstrates that this also obtains for young deaf children still in the early stages of developing spoken language. Data collected from the homes of 13 deaf children (aged from 3 years 3 months to 4 years 4 months at the start of the study) over a two-year period showed hypothesising and experimenting around writing. Spontaneous drawing and writing samples were collected and a method of eliciting data was devised that did not rely on the children knowing vocabulary related to print (e.g. 'word' or 'sentence'). The data revealed that these children had internalised print concepts but this knowledge could easily be overlooked. Implications for educational settings are discussed. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Deafness and Education International)

Phonemic restoration by hearing-impaired listeners with mild to moderate sensorineural hearing loss.

Hearing Research — Fri, 13 Nov 2009 00:00:00 +0100

Authors: Başkent D, Eiler CL, Edwards B The auditory system is capable of perceptually restoring inaudible portions of speech. This restoration may be compromised as a result of hearing impairment, particularly if it is combined with advanced age, because of degradations in the bottom-up and top-down processes. To test this hypothesis, phonemic restoration was quantitatively measured with hearing-impaired listeners of varying ages and degrees of hearing impairment, as well as with a normal-hearing control group. The results showed that the restoration benefit was negatively correlated with both hearing impairment and age, supporting the original hypothesis. Group data showed that listeners with mild hearing loss were able to perceptually restore the missing speech segments as wel...

Contents Vol. 14, 2009

Audiology and Neurotology — Thu, 12 Nov 2009 23:00:00 +0100

Audiol Neurotol 2009;14:I-IV (DOI:10.1159/000259790) (Source: Audiology and Neurotology)

Title Page / Table of Contents

Audiology and Neurotology — Thu, 12 Nov 2009 23:00:00 +0100

Audiol Neurotol 2009;14:345-347 (DOI:10.1159/000259791) (Source: Audiology and Neurotology)

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Author and Subject Index Vol. 14, No. 6, 2009

Audiology and Neurotology — Thu, 12 Nov 2009 23:00:00 +0100

Audiol Neurotol 2009;14:432 (DOI:10.1159/000259796) (Source: Audiology and Neurotology)

Author Index Vol. 14, 2009

Audiology and Neurotology — Thu, 12 Nov 2009 23:00:00 +0100

Audiol Neurotol 2009;14:433-434 (DOI:10.1159/000259797) (Source: Audiology and Neurotology)

Subject Index Vol. 14, 2009

Audiology and Neurotology — Thu, 12 Nov 2009 23:00:00 +0100

Audiol Neurotol 2009;14:435-436 (DOI:10.1159/000259798) (Source: Audiology and Neurotology)

New Brain Findings On Dyslexic Children

Hearing / Deafness News From Medical News Today — Thu, 12 Nov 2009 12:00:00 +0100

The vast majority of school-aged children can focus on the voice of a teacher amid the cacophony of the typical classroom thanks to a brain that automatically focuses on relevant, predictable and repeating auditory information, according to new research from Northwestern University. (Source: Hearing / Deafness News From Medical News Today)

Transtympanic Electro-cochleography in the Assessment of Perilymphatic Fistulas

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:391-402 (DOI:10.1159/000259264) (Source: Audiology and Neurotology)

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Tinnitus and Translabyrinthine Acoustic Neuroma Surgery

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:403-409 (DOI:10.1159/000259265) (Source: Audiology and Neurotology)

Surgical Strategy of Cochlear Implantation in Patients with Chronic Middle Ear Disease

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:410-417 (DOI:10.1159/000259266) (Source: Audiology and Neurotology)

Conference Calendar

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:418-420 (DOI:10.1159/000259267) (Source: Audiology and Neurotology)

Author Index Vol. 2, 1997

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:421 (DOI:10.1159/000259268) (Source: Audiology and Neurotology)

Subject Index Vol. 2, 1997

Audiology and Neurotology — Wed, 11 Nov 2009 23:00:00 +0100

Audiol Neurootol 1997;2:422 (DOI:10.1159/000259269) (Source: Audiology and Neurotology)

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Relay Consumer Alert: 800 Numbers No Longer Interoperable

National Association of the Deaf — Wed, 11 Nov 2009 02:05:17 +0100

The NAD has learned that a major Video Relay Service (VRS) provider removed all toll-free 800 numbers from the relay service number database to comply with a recent Public Notice issued by the Federal Communications Commission (FCC). As a result of the FCC decision, people who use videophones provided by VRS providers cannot call other people whose 800 numbers/videophones are supported by this major VRS provider. read more (Source: National Association of the Deaf)

Attention IP-Relay Users: 10-Digit FAQs

National Association of the Deaf — Wed, 11 Nov 2009 01:22:45 +0100

Do you use an IP Relay service on your computer, laptop, or pager to make calls to hearing people? Do you want to use an IP Relay service in the future to make calls to hearing people? You must have a local 10-digit number to make non-emergency IP Relay calls after November 12, 2009. Contact your preferred IP Relay service provider and get your local 10-digit number today. read more (Source: National Association of the Deaf)

A Major Effect QTL on Chromosome 18 for Noise Injury to the Mouse Cochlear Lateral Wall.

Hearing Research — Wed, 11 Nov 2009 00:00:00 +0100

Authors: Ohlemiller KK, Rosen AD, Gagnon PM We recently demonstrated a striking difference among inbred mouse strains in the effects of a single noise exposure, whereby CBA/J and CBA/CaJ (CBA) mice show moderate reversible reduction in the endocochlear potential (EP) while C57BL/6J (B6) mice do not (Ohlemiller, K.K., Gagnon, P.M. 2007. Genetic dependence of cochlear cells and structures injured by noise. Hearing Res. 224, 34-50). Acute EP reduction in CBA was reliably associated with characteristic pathology of the spiral ligament and stria vascularis, both immediately after noise and 8 weeks later. Analysis of B6xCBA F1 hybrid mice indicated that EP reduction and its anatomic correlates are co-inherited in an autosomal dominant manner. Further analysis of N2 mice resulting from the ba...

Phonological awareness and decoding skills in deaf adolescents

Deafness and Education International — Wed, 11 Nov 2009 00:00:00 +0100

This study investigated the phonological awareness skills of a group of deaf adolescents and how these skills correlated with decoding skills (single word and non-word reading) and receptive vocabulary.Twenty, congenitally profoundly deaf adolescents with at least average nonverbal cognitive skills were tested on a range of phonological awareness tasks, and a non-word and real-word reading task, and their speech intelligibility was rated. Scores on a receptive vocabulary measure were gathered from existing records. All participants met an inclusion criterion of scoring within one standard deviation of the mean on a non-verbal reasoning task.As a group, compared to the hearing standardisation samples, the participants' single-word reading fell within the normal range; their non-word reading...

FCC YouTube Captioned ASL Videos about 10-Digit Numbering

National Association of the Deaf — Tue, 10 Nov 2009 23:26:32 +0100

You must have a local 10-digit number to make non-emergency IP Relay or Video Relay Service (VRS) calls after November 12, 2009. Captioned ASL video information about 10-digit numbers for VRS and IP Relay users are now available on YouTube via the Federal Communications Commission YouTube channel.read more (Source: National Association of the Deaf)

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Mouse Study Sheds Light On Hearing Loss In Older Adults

Hearing / Deafness News From Medical News Today — Tue, 10 Nov 2009 12:00:00 +0100

Becoming "hard of hearing" is a standard but unfortunate part of aging: A syndrome called age-related hearing loss affects about 40 percent of people over 65 in the United States, and will afflict an estimated 28 million Americans by 2030. (Source: Hearing / Deafness News From Medical News Today)

A System to Simulate and Reproduce Audio-Visual Environments for Spatial Hearing Research.

Hearing Research — Mon, 09 Nov 2009 00:00:00 +0100

Authors: Seeber BU, Kerber S, Hafter ER The article reports the experience gained from two implementations of the "Simulated Open-Field Environment" (SOFE), a setup that allows sounds to be played at calibrated levels over a wide frequency range from multiple loudspeakers in an anechoic chamber. Playing sounds from loudspeakers in the free-field has the advantage that each participant listens with their own ears, and individual characteristics of the ears are captured in the sound they hear. This makes an easy and accurate comparison between various listeners with and without hearing devices possible. The SOFE uses custom calibration software to assure individual equalization of each loudspeaker. Room simulation software creates the spatio-temporal reflection pattern of sound sources i...

Motion of the Tympanic Membrane after Cartilage Tympanoplasty Determined by Stroboscopic Holography.

Hearing Research — Mon, 09 Nov 2009 00:00:00 +0100

Authors: Aarnisalo AA, Cheng JT, Ravicz ME, Furlong C, Merchant SN, Rosowski JJ Stroboscopic holography was used to quantify dynamic deformations of the tympanic membrane (TM) of the entire surface of the TM before and after cartilage tympanoplasty of the posterior or posterior-superior part of the TM. Cartilage is widely used in tympanoplasties to provide mechanical stability for the TM. Three human cadaveric temporal bones were used. A 6 mm x 3 mm oval cartilage graft was placed through the widely opened facial recess onto the medial surface of the posterior or posterior-superior part of the TM. The graft was either in contact with the bony tympanic rim and manubrium or not. Graft thickness was either 0.5 or 1.0 mm. Stroboscopic holography produced displacement amplitude and phase ma...

The Fischer 344 rat as a model of presbycusis.

Hearing Research — Sat, 07 Nov 2009 00:00:00 +0100

Authors: Syka J Due to the rising number of the aged human population all over the world, presbycusis is a phenomenon that deserves the increasing attention of the medical community as regards to prevention and treatment. This requires finding appropriate animal models for human presbycusis that will be useful in future experiments. Among the available rat strains, the Fischer 344 (F344) strain promises to serve as a model producing prompt and profound presbycusis. Hearing thresholds begin to increase in this strain within the first year of life, toward the end of the second year the thresholds are very high. The threshold shifts progress in both ears independently. The rapid deterioration of distortion product otoacoustic emissions, with the majority of outer hair cells (OHC) being pr...

Germs Mingle Most on Palms, Feet, Forearms

MedicineNet Hearing General — Fri, 06 Nov 2009 07:00:00 +0100

Title: Germs Mingle Most on Palms, Feet, ForearmsCategory: Health NewsCreated: 11/5/2009 2:10:00 PMLast Editorial Review: 11/6/2009 (Source: MedicineNet Hearing General)

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On the ability of human listeners to distinguish between front and back.

Hearing Research — Fri, 06 Nov 2009 00:00:00 +0100

Authors: Zhang PX, Hartmann WM In order to determine whether a sound source is in front or in back, listeners can use location-dependent spectral cues caused by diffraction from their anatomy. This capability was studied using a precise virtual-reality technique (VRX) based on a transaural technology. Presented with a virtual baseline simulation accurate up to 16 kHz, listeners could not distinguish between the simulation and a real source. Experiments requiring listeners to discriminate between front and back locations were performed using controlled modifications of the baseline simulation to test hypotheses about the important spectral cues. The experiments concluded: (1) Front/back cues were not confined to any particular 1/3rd or 2/3rd octave frequency region. Often adequate cues ...

Middle-Ear Function At High Frequencies Quantified With Advanced Bone Conduction Measures.

Hearing Research — Fri, 06 Nov 2009 00:00:00 +0100

Authors: Popelka GR, Telukuntla G, Puria S Auditory thresholds with standardized clinical procedures are obtained over a much nar- rower frequency range by bone conduction than by air conduction. As a result, diagnostic information for both sensorineural and conductive-mechanism function is incomplete for high frequencies. A new magnetostrictive bone-conduction transducer that has the poten- tial for improved output in the high-frequency range was evaluated in the laboratory and in a variety of subjects with normal hearing (N=11) or sensorineural hearing loss (N=9). La- boratory results indicated that harmonic distortion and acoustic radiation were both suffi- ciently low to allow accurate threshold measurements. Auditory thresholds obtained with this magnetostrictive bone-conduction t...

USADSF President Fleischer Passes Away

National Association of the Deaf — Thu, 05 Nov 2009 16:42:16 +0100

The National Association of the Deaf (NAD) mourns the sudden loss of Lawrence R. Fleischer, president of the USA Deaf Sports Federation (USADSF), who had a heart attack on Sunday evening, November 1 at Burbank, CA. He was on his way home after delivering the closing keynote at the American Sign Language Teachers Association (ASLTA) conference in Phoenix, AZ. read more (Source: National Association of the Deaf)

Vestibulo-Ocular Reflex and Balance Maturation in Healthy Children Aged from Six to Twelve Years

Audiology and Neurotology — Wed, 04 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:203-210 (DOI:10.1159/000255338) (Source: Audiology and Neurotology)

Genotype-Phenotype Correlation for DFNA22: Characterization of Non-Syndromic, Autosomal Dominant, Progressive Sensorineural Hearing Loss due to MYO6 Mutations

Audiology and Neurotology — Wed, 04 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:211-220 (DOI:10.1159/000255339) (Source: Audiology and Neurotology)

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Human Frequency-Following Response to Speech-Like Sounds: Correlates of Off-Frequency Masking

Audiology and Neurotology — Wed, 04 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:221-228 (DOI:10.1159/000255340) (Source: Audiology and Neurotology)

Auditory Perception in Individuals with Friedreich's Ataxia

Audiology and Neurotology — Wed, 04 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:229-240 (DOI:10.1159/000255341) (Source: Audiology and Neurotology)

Nystagmus during Attacks of Vestibular Migraine: An Aid in Diagnosis

Audiology and Neurotology — Wed, 04 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:241-246 (DOI:10.1159/000255440) (Source: Audiology and Neurotology)

Diabetic Neuropathy

MedicineNet Hearing General — Wed, 04 Nov 2009 07:00:00 +0100

Title: Diabetic NeuropathyCategory: Diseases and ConditionsCreated: 1/31/2005 7:34:00 AMLast Editorial Review: 11/4/2009 (Source: MedicineNet Hearing General)

GJB2 and GJB6 Genes: Molecular Study and Identification of Novel GJB2 Mutations in the Hearing-Impaired Argentinean Population

Audiology and Neurotology — Tue, 03 Nov 2009 23:00:00 +0100

Audiol Neurotol 2010;15:194-202 (DOI:10.1159/000254487) (Source: Audiology and Neurotology)

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Environmental sound perception of cochlear implant users

Cochlear Implants International — Fri, 30 Oct 2009 00:00:00 +0100

The purposes of this study were (1) to develop a new test of environmental sound perception, the Environmental Sounds Perception Test (EST), (2) to compare the performance of experienced cochlear implant (CI) recipients with that of age-equivalent normally hearing (NH) listeners using this new test, and (3) to pilot test its clinical use as a pre-to-post assessment tool. The closed-set EST consisted of 45 different sounds classified into nine categories, with each sound being represented by two different tokens. The results showed that the NH participants scored significantly higher than the experienced CI users (p < 0.001). For the pre-to-post CI group, higher scores were obtained post-surgery with the CI; this difference was approaching significance (p = 0.068). Overall these results sug...

Testicular Cancer Survivors Face Other Ills

MedicineNet Hearing General — Thu, 29 Oct 2009 07:00:00 +0100

Title: Testicular Cancer Survivors Face Other IllsCategory: Health NewsCreated: 10/28/2009 4:10:00 PMLast Editorial Review: 10/29/2009 (Source: MedicineNet Hearing General)

Marlee Matlin Champions Internet Access for the NAD

National Association of the Deaf — Wed, 28 Oct 2009 10:52:47 +0100

Academy Award winning actress and author Marlee Matlin, a member of the National Association of the Deaf (NAD), is taking on a new role as an NAD spokesperson for accessible broadband services and Internet media. read more (Source: National Association of the Deaf)

NAD Youth Leadership Camp

National Association of the Deaf — Tue, 27 Oct 2009 18:42:33 +0100

Type: Learn More URL: http://www.nad.org/ylc (Source: National Association of the Deaf)

Junior NAD Conference

National Association of the Deaf — Tue, 27 Oct 2009 18:41:07 +0100

Type: Learn More URL: http://www.nad.org/events/junior-nad-national-conference (Source: National Association of the Deaf)

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Have We Lulled Ourselves Into Complacency?

National Association of the Deaf — Tue, 27 Oct 2009 01:49:15 +0100

com⋅pla⋅cen⋅cya feeling of quiet pleasure or security, often while unaware of some potential danger, defect, or the like; self-satisfaction or smug satisfaction with an existing situation, condition, etc. read more (Source: National Association of the Deaf)

Allie Rice Welcomed as Youth Leadership Coordinator

National Association of the Deaf — Tue, 27 Oct 2009 01:34:55 +0100

The National Association of the Deaf is pleased to welcome Allison Rice as its new Youth Leadership Coordinator. Her predecessor, Jennifer Yost Ortiz, recently departed the NAD with tremendous impact among deaf and hard of hearing youth. read more (Source: National Association of the Deaf)

Effects of isoflurane on auditory evoked potentials in the cochlea and brainstem of guinea pigs.

Hearing Research — Tue, 27 Oct 2009 00:00:00 +0100

This study evaluated the effects of various concentrations of the volatile anesthetic isoflurane (1 - 3%) on the compound action potential (CAP), cochlear microphonic (CM) and auditory brainstem response (ABR). Recordings were initiated in the awake, lightly restrained animal. Anesthesia was induced with a single dose of Hypnorm((R)) (fentanyl and fluanisone). After tracheostomy increasing isoflurane concentrations were applied in N(2)O/O(2) via controlled ventilation. Data were compared to recordings in the awake animal using repeated measures ANOVA and Dunnett's post hoc test. On average, isoflurane dose-dependently suppressed the amplitude and increased the latency of the CAP. CM amplitude was suppressed. These effects were most profound at high frequencies and were typically significan...

A Method for Removing Cochlear Implant Artifact.

Hearing Research — Tue, 27 Oct 2009 00:00:00 +0100

Authors: Friesen LM, Picton TW When cortical auditory evoked potentials (CAEPs) are recorded in individuals with a cochlear implant (CI), electrical artifact can make the CAEP difficult or impossible to measure. Since increasing the interstimulus interval (ISI) increases the amplitude of physiological responses without changing the artifact, subtracting CAEPs recorded with a short ISI from those recorded with a longer ISI should show the physiological response without any artifact. In the first experiment, N1-P2 responses were recorded using a speech syllable and tone, paired with ISIs that changed randomly between 0.5 and 4 seconds. In the second experiment, the same stimuli, at ISIs of either 500 or 3000 ms, were presented in blocks that were homogeneous or random with respect to the...

A sum of simple and complex motions on the eardrum and manubrium in gerbil.

Hearing Research — Tue, 27 Oct 2009 00:00:00 +0100

Authors: de La Rochefoucauld O, Olson ES Based on comparisons of ear canal and scala vestibuli pressures the gerbil middle ear transmits sound with a gain of approximately 25 dB that is almost flat from 2 to 40 kHz, and with a delay-like phase corresponding to a 25 - 30 mus delay. How the middle ear is able to transmit sound with such high temporal and amplitude fidelity is not known, and is particularly mysterious given the complex motion the ossicles and tympanic membrane (TM) are known to undergo. To explore this question, we looked at the velocities of the manubrium and along a line on the TM. The TM motion was complex, and could be approximated as the combination of a wave-like motion and an in-and-out piston-like motion. The manubrium underwent bending at some stimulus frequencie...

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Tympanic membrane and malleus-incus complex co-adaptations for high-frequency hearing in mammals.

Hearing Research — Tue, 27 Oct 2009 00:00:00 +0100

Authors: Puria S, Steele C The development of the unique capacity for high frequency hearing in many mammals was due in part to changes in the middle ear, such as the evolution of three distinct middle ear bones and distinct radial and circumferential collagen fiber layers in the eardrum. Ossicular moment(s) of inertia (MOI) and principal rotational axes, as well as eardrum surface areas, were calculated from micro-CT-based 3-D reconstructions of human, cat, chinchilla, and guinea pig temporal bones. For guinea pig and chinchilla, the fused malleus-incus complex rotates about an anterior-posterior axis, due to the relatively lightweight ossicles and bilateral symmetry of the eardrum. For human and cat, however, the MOI calculated for the unfused malleus are 5-6 times smaller for rotati...

Cochlear implantation in a profoundly deaf patient who also suffers from multiple sclerosis - a case study

Cochlear Implants International — Mon, 26 Oct 2009 00:00:00 +0100

We present a case study of cochlear implantation in a post-lingual adult having bilateral profound hearing loss for over 30 years in addition to multiple sclerosis unrelated to his deafness. Assessment of benefit in terms of speech-perception ability and quality of life reveal that long-term auditory deprivation and co-incidental multiple sclerosis are not a contraindication for cochlear implantation. Copyright © 2009 John Wiley & Sons, Ltd. (Source: Cochlear Implants International)

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

(Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Análise do conhecimento de professores acerca da conceituação de letramento

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

This article reviewed the 39 papers published in the last five years in three journals (Journal of Autism and Developmental Disorders, Focus on Autism and Other Developmental Disorders and Autism) about families with autistic children. It points out to five main issues that were studied: stress and emotional disorders, support groups and quality of life, characteristics of the families, family's perspectives about the autistic child, and intervention results. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Educação escolar e letramento de surdos: reflexões a partir da visão de pais e professores

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

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Negative synergy: hearing loss and aging

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

Feeding and eating behaviors in children with autism and typically developing children

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

Families with autistic children: international literature

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

Evaluation of hearing health services: concepts and perspectives

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

A avaliação dos serviços vem ocupando posição de destaque no planejamento e gestão em saúde, uma vez que um sistema efetivo pode reordenar a execução das ações e serviços para contemplar as necessidades da população alvo e otimizar os recursos financeiros. Embora existam algumas experiências internacionais na avaliação dos serviços de saúde auditiva, sua contribuição é limitada, devido às particularidades da Política de Atenção à Saúde Auditiva de cada país. No Brasil, o atendimento integral ao deficiente auditivo foi garantido pela Portaria GM/MS nº 2.073/04, com a proposta da organização de uma rede hierarquizada, regionalizada e integrada na Atenção básica, Média e Alta Complexidade. O aprimoramento desta Política é uma consequência natural, depois...

Dynamic and interdisciplinary assessment in hearing disability in a public ambulatory: case report

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

A proposta deste estudo foi descrever os efeitos da avaliação clínica dinâmica interdisciplinar em um caso atendido pelo Ambulatório de Investigação da Linguagem nos Distúrbios de Audição do Hospital São Paulo - Universidade Federal de São Paulo. Trata-se de uma pessoa do sexo feminino que, aos 26 anos, apresentou quadro de surdez súbita bilateral, em decorrência da síndrome de Cogan - que afeta também a visão. Ao iniciar o processo, a paciente apresentava leitura orofacial restrita, dificuldade para se comunicar com sua família, isolamento social e quadro depressivo. A avaliação dinâmica pautada na interatividade e na escuta humanística proporcionou condições para que a paciente pudesse melhorar sua comunicação, autoconceito e interação social. Nessa perspectiv...

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Modified multiple oppositions' model: approach based on distinctive features

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

O objetivo deste trabalho foi propor uma abordagem com enfoque em traços distintivos para o Modelo de Oposições Múltiplas e testar sua aplicação em um sujeito falante do Português Brasileiro. O Modelo foi aplicado em um sujeito do sexo masculino, com desvio fonológico moderado-severo e idade de seis anos e meio. Após avaliação fonológica, procedeu-se à seleção dos sons-alvo. Considerou-se o sistema fonológico inicial, bem como os traços distintivos alterados ([+voz], [+soante], [+aproximante], [coronal/±anterior], [-contínuo]). Os traços com maior número de alterações eram [+voz, +soante, +aproximante], justificando a escolha dos seguintes sons-alvo para tratamento: /r/ x /l/ x // x // x /z/, em onset medial.Tendo como base a aplicação desse modelo em falantes do i...

Introduction of augmentative and alternative communication in aphasia therapy

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

Sabe-se que o tratamento fonoaudiológico de pacientes com afasia severa é limitado. A ausência de fala articulada, algumas vezes, impede o diagnóstico da afasia. O paciente "grave" pode não falar devido à inabilidade de articulação, como ocorre na disartria e/ou apraxia. Essa ausência de fala não permite afirmar se a linguagem está comprometida. O uso da comunicação suplementar e alternativa tem sido um método eficaz na reabilitação desses pacientes. Esse estudo visou descrever o uso da comunicação suplementar e alternativa associada a outras modalidades de linguagem (escrita, gestos), a partir do relato de dois casos de afasia. A análise dos dados foi composta por dois blocos: a introdução da comunicação suplementar e alternativa no diálogo; e o uso da leitura e es...

Evaluation of the quality of life of caregivers of aphasic patients

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: Regarding physical aspects and general conditions, caretakers and control group did not present considerable differences. However, regarding emotional aspects, caregivers had worse scores than the control group. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Cup-feeding of premature newborn children

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: Female preterm newborns accepted grater milk volume, and the lesser exposition to stressing factors the bigger the acceptance of milk. The mean length of ingestion was not influenced by the variables analyzed. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Evolution indicators of patients with cerebral palsy and oropharyngeal dysphagia after therapeutic intervention

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: Speech-language intervention in dysphagia, along with the work of a multidisciplinary team, promotes better functionality of swallowing and reduction of suggestive signs of penetration and/or tracheal aspiration, as well as improved clinical stability. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

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Knowledge of nursing professionals that assist patients with swallowing disorders at a University Hospital in Belo Horizonte

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSIONS: In general, the nursing professionals interviewed have an adequate intervention before swallowing disorders in hospitalized patients. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Efficacy of the use of the Glatzel mirror in nasal permeability evaluation

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The Glatzel mirror demonstrated not to be a trustworthy instrument for the evaluation of nasal permeability in the analyzed sample, except in cases of severe nasal obstruction, that is, allergic patients with surgical indication. No correlations were found with the variables sex and age. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Occurrence of signs and symptoms of temporomandibular dysfunction in musicians

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The sum of factors presented puts players of certain musical instruments as a group susceptible to present signs and symptoms of temporomandibular disorder, including auditory symptoms. Therefore, the practice of these instruments may be considered a trigger, as well as an aggravating or perpetuating factor of a previously existing problem. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Lyric singer voice and motor coordination: an intervention based on Piret and Béziers

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: According to the subjective analysis, the postural adjustments deriving from the execution of motor coordination exercises probable guaranteed greater opening of the thoracic cavity and improved the breathing conditions of the subjects while singing, which might have favored the verticalization of resonance and the projection of the voice. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Voice and oral communication analysis of preparatory school teachers

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: Prep-school teachers showed high incidence of vocal symptoms even when using microphone. They used of several corporal resources in order to enhance learning, and use of gestures, directed eye contact, and verbal interaction with students were the most used strategies during classes. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

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Questionnaire Hearing Handicap Inventory for the Elderly - Screening version (HHIE-S): sensitivity and specificity study

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSIONS: There was positive association between the degree of hearing loss and the handicap referred by both groups of subjects. The HHIE-S questionnaire is a hearing screening instrument with high sensitivity and specificity in identifying hearing loss in elderly people that seek health care services that are not specific for attention related to hearing disorders. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Prevalence of auditory sequelae after pyogenic meningitis in children

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The results indicate the need for audiological monitoring and neurological follow-up in children with previous history of pyogenic meningitis, especially those infected in early ages, seeking to identify possible hearing impairments and to intervene as soon as possible, through specialized intervention, prothetization, and oral language rehabilitation. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Analysis of acoustic and auditory-perceptual parameters in stutterers

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The auditory-perceptual parameters that were significantly frequent among stutterers were: presence of vocal tension, altered pneumo-phonic coordination, and altered pitch range. Therefore, it is important to evaluate the vocal aspects of these patients, for the fluency disorders might undermine some vocals parameters, causing dysphonia. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Relationship between neuroimaging findings and auditory and metaphonological abilities in students with developmental dyslexia

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The findings of the present study evidenced correlation between auditory memory tasks and syllabic and phonemic manipulation, and association between auditory and phonological abilities, suggesting that auditory processes interfere directly in the perception of acoustic, temporal and sequential aspects of sounds to form a stable phonological representation, and that this might be caused by the presence of blood flow changes on the temporal lobe. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Speech evaluation instrument for acoustical analysis based on linguistic criteria

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The present study not only provided linguistic criteria for the elaboration of speech production and/or perception evaluation instruments, but also made available a speech evaluation instrument for instrumental analysis in Speech-Language Pathology. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

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Acoustic analysis of temporal characteristics of consonants from Brazilian Portuguese

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: The values observed in the study will be useful to the elaboration of auditory tests and trainings including nonverbal stimuli analogous to the temporal characteristics of speech in Brazilian Portuguese. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

The role of the extralinguistic variables age and sex in the development of syllabic coda

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

CONCLUSION: It was found a higher probability of correct use of the coda as age increased, but regressions in its use were observed, which should be seen as a normal stage of the development. Regarding sex, there was a tendency for male subjects to present higher phonological precision, however, this does not mean they present different acquisition stages when compared with female subjects. (Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Editorial - Fonoaudiologia: reabertas as discussões sobre especialidades

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

(Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Editorial

Revista da Sociedade Brasileira de Fonoaudiologia — Fri, 23 Oct 2009 15:40:00 +0100

(Source: Revista da Sociedade Brasileira de Fonoaudiologia)

Electrical impedance measurements of cochlear structures using the four-electrode reflection-coefficient technique.

Hearing Research — Fri, 23 Oct 2009 00:00:00 +0100

Authors: Kumar G, Chokshi M, Richter CP In individuals with severe-to-profound hearing loss, cochlear implants (CIs) bypass normal inner ear function by applying electrical current directly into the cochlea, thereby stimulating surviving auditory nerve fibers. Although cochlear implants are able to restore some auditory sensation, they are far from providing normal hearing. It has been estimated that up to 75% of the current injected via a CI is shunted along scala tympani and is not available to stimulate auditory neurons. The path of the injected current and the consequent population of stimulated spiral ganglion cells are dependent upon the positions of the electrode contacts within the cochlea and the impedances of cochlear structures. However, characterization of the current path ...

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Neural Substrate of Sound Duration Discrimination during an Auditory Sequence in the Guinea Pig Primary Auditory Cortex.

Hearing Research — Fri, 23 Oct 2009 00:00:00 +0100

Authors: Okazaki S, Kanoh S, Tsukada M, Oka K Mismatch negativity (MMN) is a negative component of event-related brain potentials elicited by stimulus transitions. Stimulus duration transition also elicits MMN (duration MMN), with a magnitude that is related to the degree of duration change and the discrimination ability. The neural substrates of duration MMN have not yet been investigated. We therefore studied how duration transitions in an auditory stimulus train are represented in neurons in the primary auditory cortex of anesthetized guinea pigs. Two types of neuronal responses to the context of changes in stimulus duration were found. One was a reduced response as the duration of the preceding stimulus was increased. Second was an enhancement of the late components of the response...

The Diagnosis and Management of Benign Paroxysmal Positional Vertigo

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

Semin Hear 2009; 30: 287-305DOI: 10.1055/s-0029-1241129ABSTRACTBenign paroxysmal positional vertigo (BPPV) is a peripheral vestibular disorder that manifests as sudden, short-lived episodes of vertigo elicited by specific head movements. BPPV is one of the most common causes of dizziness or vertigo, and almost 10% of the elderly population experiences BPPV. It is often self-limiting but can become chronic and recurrent with considerable effects on a person's quality of life. Most cases result from the migration of free-floating canalith particles into the posterior (more commonly) or horizontal (less commonly) semicircular canals, rendering them sensitive to gravity. Diagnosis of BPPV is based on a suggestive history and physical examination, and other tests are not normally required. Repo...

Subjective Visual Vertical Test

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

Semin Hear 2009; 30: 281-286DOI: 10.1055/s-0029-1241128ABSTRACTThe otoliths are vestibular organs that act as gravito-inertial force sensors and contribute to the perception of spatial orientation (earth verticality). The subjective visual vertical (SVV) is a psychophysical measure of the angle between perceptual vertical and true (gravitational) vertical. The otoliths contribute to the estimation of the physical vertical orientation, and individuals with normal vestibular function align the SVV within 2 degrees of true vertical (0 degrees). Impaired SVV has been documented in patients with unilateral vestibular disorders. Most research has focused on measuring the static SVV (head upright and stationary); however, more recently, methods have been developed to measure the SVV during stimul...

Vestibular-Evoked Myogenic Potentials

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

This article provides an overview of each method and highlights the similarities and differences. Several cases are presented to illustrate the relation between the results for cVEMPs and oVEMPs in patients with well-defined audiovestibular disorders.[...]© Thieme Medical PublishersGet connected:Table of contents | Abstract | Full text (Source: Seminars in Hearing)

Rotational Tests of Vestibular Function

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

Semin Hear 2009; 30: 253-266DOI: 10.1055/s-0029-1241126ABSTRACTRotational tests are aimed at producing a more natural, precise, repeatable, and broadband evaluation of the vestibular function. Currently, two types of rotation tests are in clinical use: passive whole-body rotation where the stimulus is produced by a motorized chair, and active rotation where the stimulus is produced by voluntary head movements. In both methods, the frequency response of the vestibulo-ocular reflex (VOR) is determined by measuring the eye movements and comparing the head velocity with the slow-phase eye velocity. Rotation tests offer several advantages over other vestibular function tests in patients with bilateral caloric weakness, in young children, or in patients for whom VOR changes have to be assessed o...

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Current Role of the Videonystagmography Examination in the Context of the Multidimensional Balance Function Test Battery

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

This article describes the role of the ENG/VNG examination in the contemporary assessment of vertigo, dizziness, and imbalance.[...]© Thieme Medical PublishersGet connected:Table of contents | Abstract | Full text (Source: Seminars in Hearing)

Anatomical and Physiological Considerations in Vestibular Dysfunction and Compensation

Seminars in Hearing — Thu, 22 Oct 2009 15:37:20 +0100

Semin Hear 2009; 30: 231-241DOI: 10.1055/s-0029-1241124ABSTRACTSensory information from the vestibular, visual, and somatosensory/proprioceptive systems are integrated in the brain in complex ways to produce a final motor output to muscle groups for maintaining gaze, head and body posture, and controlling static and dynamic balance. The balance system is complex, which can make differential diagnosis of dizziness quite challenging. However, this complex system is organized anatomically in a variety of pathways, and some of these pathways have been documented. The vestibulo-ocular reflex (VOR) is one such pathway. Understanding the anatomy and physiology of the VOR facilitates our understanding of normal and abnormal eye movements, and research is advancing our understanding of the plastici...

Continuing education self-study program

Seminars in Hearing — Thu, 22 Oct 2009 00:40:04 +0100

Semin Hear 2009; 30: C1-C8DOI: 10.1055/s-0029-1241130© Thieme Medical PublishersGet connected:Table of contents (Source: Seminars in Hearing)

Age-Related Loss of Spiral Ganglion Neurons.

Hearing Research — Thu, 22 Oct 2009 00:00:00 +0100

Authors: Bao J, Ohlemiller KK Spiral ganglion neurons (SGNs) are the relay station for auditory information between hair cells and central nervous system. Age-related decline of auditory function due to SGN loss can not be ameliorated by hearing aids or cochlear implants. Recent findings clearly indicate that survival of SGNs during aging depends on genetic and environmental interactions, which can be demonstrated at the systemic, tissue, cellular, and molecular levels. At the systemic level, both insulin/insulin-like growth factor-1 and lipophilic/steroid hormone pathways influence SGN survival during aging. At the level of organ of the Corti, it is difficult to determine whether age-related SGN loss is primary or secondary degeneration. However, a late stage of SGN degeneration may b...

Bridge of signs: can sign language empower non-deaf children to triumph over their communication disabilities?

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: Toth A PMID: 19839103 [PubMed - in process] (Source: American Annals of the Deaf)

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Educational programs for deaf students. Schools and programs in the United States.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839104 [PubMed - in process] (Source: American Annals of the Deaf)

Educational programs for deaf students. Schools and programs in Canada.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839105 [PubMed - in process] (Source: American Annals of the Deaf)

Educational programs for deaf students. Postsecondary programs.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839106 [PubMed - in process] (Source: American Annals of the Deaf)

University and college programs for personnel in deafness.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839107 [PubMed - in process] (Source: American Annals of the Deaf)

Programs for deaf-blind children and adults.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839108 [PubMed - in process] (Source: American Annals of the Deaf)

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Advocacy, support, and rehabilitation programs.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839109 [PubMed - in process] (Source: American Annals of the Deaf)

Research on deafness. Doctoral dissertations.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839110 [PubMed - in process] (Source: American Annals of the Deaf)

Research on deafness. Gallaudet University dissertations and theses.

American Annals of the Deaf — Wed, 21 Oct 2009 21:06:04 +0100

Authors: PMID: 19839111 [PubMed - in process] (Source: American Annals of the Deaf)

NAD Announces CEO Search Committee Members

National Association of the Deaf — Wed, 21 Oct 2009 18:52:06 +0100

The Board of Directors of the National Association of the Deaf (NAD) is pleased to announce members of the CEO Search Committee (CSC). These persons will lead NAD efforts to identify individuals whose leadership skills are well-qualified to succeed Nancy Bloch, the current Chief Executive Officer. read more (Source: National Association of the Deaf)

Education, Occupation, Noise Exposure History and the 10-yr Cumulative Incidence of Hearing Impairment in Older Adults.

Hearing Research — Wed, 21 Oct 2009 00:00:00 +0100

Authors: Cruickshanks KJ, Nondahl DM, Tweed TS, Wiley TL, Klein BE, Klein R, Chappell R, Dalton DS, Nash SD The purpose of this study was to determine the 10-yr cumulative incidence of hearing impairment and associations of education, occupation and noise exposure history with the incidence of hearing impairment in a population-based cohort study of 3753 adults ages 48-92 years at the baseline examinations during 1993-1995 in Beaver Dam, WI. Hearing thresholds were measured at baseline, 2.5 yr, 5 yr, and 10-yr follow-up examinations. Hearing impairment was defined as a pure-tone average (PTA) > 25 dB HL at 500, 1000, 2000, and 4000 Hz. Demographic characteristics and occupational histories were obtained by questionnaire. The 10-yr cumulative incidence of hearing impairment was 37.2%...

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NAD Past President Hurwitz Selected as 10th Gallaudet President

National Association of the Deaf — Tue, 20 Oct 2009 01:17:28 +0100

The Board of Directors of the National Association of the Deaf (NAD) extends enthusiastic congratulations to T. Alan Hurwitz on his selection as the tenth president of Gallaudet University. Hurwitz is the first past president of the NAD to serve in this prestigious academic leadership role. Currently he serves as president of the National Technical Institute for the Deaf (NTID), one of eight colleges within the Rochester Institute of Technology (RIT), and vice president and dean of RIT. read more (Source: National Association of the Deaf)

Multiple roles for the tectorial membrane in the active cochlea.

Hearing Research — Tue, 20 Oct 2009 00:00:00 +0100

Authors: Lukashkin AN, Richardson GP, Russell IJ This review is concerned with experimental results that reveal multiple roles for the tectorial membrane in active signal processing in the mammalian cochlea. We discuss the dynamic mechanical properties of the tectorial membrane as a mechanical system with several degrees of freedom and how its different modes of movement can lead to hair-cell excitation. The role of the tectorial membrane in distributing energy along the cochlear partition and how it channels this energy to the inner hair cells is described. PMID: 19853029 [PubMed - as supplied by publisher] (Source: Hearing Research)

NAD to Serve on FCC Panel on Broadband Accessibility

National Association of the Deaf — Mon, 19 Oct 2009 21:27:44 +0100

On Tuesday, October 20, 2009, the NAD will participate in an all-day Federal Communications Commission (FCC) workshop to further address broadband accessibility for people with disabilities as part of the development of a National Broadband Plan. This FCC workshop will discuss accessibility and affordability barriers faced by people with disabilities, opportunities that broadband can present people with disabilities, and policy recommendations to address these barriers and maximize opportunities. read more (Source: National Association of the Deaf)

Recording of electrically evoked auditory brainstem responses after electrical stimulation with biphasic, triphasic and precision triphasic pulses.

Hearing Research — Mon, 19 Oct 2009 00:00:00 +0100

Authors: Bahmer A, Polak M, Baumann U Biphasic electrical pulses are the standard stimulation pulses in current cochlear implants. In auditory brainstem recordings biphasic pulses generate a significant artifact that disrupts brainstem responses, which are magnitudes smaller. Triphasic pulses may minimize artifacts by restoring the neural membrane to its resting potential faster than biphasic pulses and make auditory brainstem responses detection easier. We compared biphasic pulses with triphasic and precision triphasic pulses to evoke brainstem responses in human subjects. For this purpose, electrically evoked brainstem response audiometry was performed in 10 (11 ears) cochlear implant patients. Artifacts and brainstem responses evoked by bi- and triphasic stimulation were analyzed. A...

Stress induces transient auditory hypersensitivity in rats.

Hearing Research — Thu, 15 Oct 2009 23:00:00 +0100

Authors: Mazurek B, Haupt H, Joachim R, Klapp BF, Stöver T, Szczepek AJ Exposure to harsh environment induces stress reactions that increase probability of survival. Stress influences the endocrine, nervous and immune systems and affects the functioning of a variety of organs. Numerous researchers demonstrated that a 24-hour exposure to an acoustic rodent repellent provokes stress reaction in exposed animals. In addition to the activated hypothalamus-pituitary-adrenal (HPA) axis, exposed animals had pathological reactions in the reproductive organs, bronchia and skin. Here, we examined the effect of above stress model on the auditory system of Wistar rats. We found that 24-hour stress decreases the thresholds and increases the amplitudes of auditory brainstem responses and distort...

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Suppression of the acoustically evoked auditory-nerve response by electrical stimulation in the cochlea of the guinea pig.

Hearing Research — Thu, 15 Oct 2009 23:00:00 +0100

Authors: Stronks HC, Versnel H, Prijs VF, Klis SF There is increasing interest in the use of electro-acoustical stimulation in people with a cochlear implant that have residual low-frequency hearing in the implanted ear. This raises the issue of how electrical and acoustical stimulation interact in the cochlea. We have investigated the effect of electrical stimulation on the acoustically evoked compound action potential (CAP) in normal-hearing guinea pigs. CAPs were evoked by tone bursts, and electric stimuli were delivered at the base of the cochlea using extracochlear electrodes. CAPs could be suppressed by electrical stimulation under various conditions. The dependence of CAP suppression on several parameters was investigated, including frequency and level of the acoustic stimulus, ...

H.R. 3101 Action Alert!

National Association of the Deaf — Thu, 15 Oct 2009 11:54:10 +0100

H.R. 3101, the “Twenty-first Century Communications and Video Accessibility Act of 2009,” was introduced by Representative Edward J. Markey [MA-7] on June 26, 2009. As of October 7, 2009, we have 13 co-sponsors. We need more - especially from those who have Representatives that serve on the House Subcommittee on Communications, Internet & Technology. read more (Source: National Association of the Deaf)

NAD Urges Improved Information for Communication Services

National Association of the Deaf — Thu, 15 Oct 2009 00:45:19 +0100

The NAD, along with other consumer groups, urged the Federal Communications Commission (FCC) to take action to ensure sufficient access to information about communications services and products and to provide greater outreach and education to consumers, service providers, and manufacturers about accessibility issues. Reply comments in this proceeding can be filed until October 28, 2009.read more (Source: National Association of the Deaf)

Cochlear amplification - somatic or stereocilial forces? A first-person response.

Hearing Research — Mon, 12 Oct 2009 23:00:00 +0100

Authors: Ashmore J PMID: 19835941 [PubMed - as supplied by publisher] (Source: Hearing Research)

Measurement of Conductive Hearing Loss in Mice.

Hearing Research — Mon, 12 Oct 2009 23:00:00 +0100

Authors: Qin Z, Wood M, Rosowski JJ In order to discriminate conductive hearing loss from sensorineural impairment, quantitative measurements were used to evaluate the effect of artificial conductive pathology on distortion product otoacoustic emissions (DPOAEs), auditory brainstem responses (ABRs) and laser Doppler vibrometry (LDV) in mice. The conductive manipulations were created by perforating the pars flaccida of the tympanic membrane, filling or partially filling the middle-ear cavity with saline, fixing the ossicular chain, and interrupting the incudo-stapedial joint. In the saline-filled and ossicular-fixation groups, averaged DPOAE thresholds increased relative to the control state by 20 to 36 dB and 25 to 39 dB respectively with the largest threshold shifts occurring at frequ...

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loracarbef, Lorabid

MedicineNet Hearing General — Mon, 12 Oct 2009 07:00:00 +0100

Title: loracarbef, LorabidCategory: MedicationsCreated: 12/31/1997Last Editorial Review: 10/12/2009 (Source: MedicineNet Hearing General)

Tell FCC About Your Experience with Communication Services

National Association of the Deaf — Fri, 09 Oct 2009 14:55:43 +0100

Think about the last time you wanted to get telephone service, Internet service, or subscription TV service from a cable, satellite, or phone company. Did you get all of the information you needed? Was the information easy to get? Could you access the information? Was there information you did not get, but wanted or needed to get? The Federal Communications Commission (FCC) wants to know more about your experience, so you can be empowered and better protected. Comments are due by October 13, 2009. read more (Source: National Association of the Deaf)

NAD Attends Dedication of Helen Keller Statue

National Association of the Deaf — Fri, 09 Oct 2009 01:39:17 +0100

On October 7, 2009, representatives of the NAD attended a special Congressional Tribute: The Dedication of the Statue of Helen Keller. This event provided opportunities to recognize the significant life and achievements of Helen Keller and opportunities to highlight the need for continued efforts to ensure equal access and equal opportunity – especially in today’s world of advancing technologies. read more (Source: National Association of the Deaf)

As Teens Plug In, Parents Fret

MedicineNet Hearing General — Thu, 08 Oct 2009 07:00:00 +0100

Title: As Teens Plug In, Parents FretCategory: Health NewsCreated: 10/8/2009 8:10:00 AMLast Editorial Review: 10/8/2009 (Source: MedicineNet Hearing General)

cefprozil, Cefzil

MedicineNet Hearing General — Thu, 08 Oct 2009 07:00:00 +0100

Title: cefprozil, CefzilCategory: MedicationsCreated: 12/31/1997Last Editorial Review: 10/8/2009 (Source: MedicineNet Hearing General)

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Air Quality Up, Ear Infections Down

MedicineNet Hearing General — Thu, 08 Oct 2009 07:00:00 +0100

Title: Air Quality Up, Ear Infections DownCategory: Health NewsCreated: 10/8/2009 10:31:00 AMLast Editorial Review: 10/8/2009 10:31:13 AM (Source: MedicineNet Hearing General)

Drivers Of Convertibles May Be At Risk For Noise-induced Hearing Loss

Hearing / Deafness News From Medical News Today — Wed, 07 Oct 2009 13:00:00 +0100

Drivers who frequently take to the road with the top down may be risking serious damage to their hearing, according to research presented at the 2009 American Academy of Otolaryngology-Head and Neck Surgery Foundation (AAO-HNSF) Annual Meeting & OTO EXPO, in San Diego, CA. (Source: Hearing / Deafness News From Medical News Today)

Transplant Patients Should Be Monitored for Ear Infection

MedicineNet Hearing General — Wed, 07 Oct 2009 07:00:00 +0100

Title: Transplant Patients Should Be Monitored for Ear InfectionCategory: Health NewsCreated: 10/6/2009 2:10:00 PMLast Editorial Review: 10/7/2009 (Source: MedicineNet Hearing General)

Ear: Anatomy of Hearing and Balance

MedicineNet Hearing General — Wed, 07 Oct 2009 07:00:00 +0100

Title: Ear: Anatomy of Hearing and BalanceCategory: Doctor's ViewsCreated: 11/5/2002Last Editorial Review: 10/7/2009 (Source: MedicineNet Hearing General)

Coupled hair bundles could endow the cochlear amplifier with sharp frequency tuning and nonlinear compression.

Hearing Research — Tue, 06 Oct 2009 23:00:00 +0100

Authors: Dierkes K, Lindner B, Jülicher F PMID: 19818839 [PubMed - as supplied by publisher] (Source: Hearing Research)

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Elasticity modulus of rabbit middle ear ossicles determined by a novel micro-indentation technique.

Hearing Research — Tue, 06 Oct 2009 23:00:00 +0100

Authors: Soons JA, Aernouts J, Dirckx JJ For the purpose of creating a finite element model of the middle ear, the ossicles can be modelled as rigid bodies or as linear elastic materials. The general elasticity parameters used are usually measured on larger bones like the femur. In order to obtain a highly realistic model, the actual elastic modulus (Young's modulus) of the ossicles themselves is needed. We developed a novel 2-needle indentation method of determining the Young's modulus of small samples based on Sneddon's solution. We introduce the second needle in such a way that small specimens can be clamped between the 2 needles and a symmetry plane is obtained, so that geometry-dependent sample deformations are avoided. A finite element calculated correction factor is used to comp...

Predicting the role of OHC somatic motility and HB motility in cochlear amplification using a mathematical model.

Hearing Research — Tue, 06 Oct 2009 23:00:00 +0100

Authors: Meaud J, Grosh K In most models of the mammalian cochlea, either mathematical or conceptual, the sensitivity of the BM to low level acoustic stimulus is explained by the presence of outer hair cell (OHC) somatic motility. However, recent experimental evidence indicates that OHC hair bundle (HB) motility can operate with submillisecond time constants. In this paper, we implement a simple phenomenological mathematical model of HB motility, based on the ansatz that HB forcing adds mechanical energy to the system. Our preliminary predictions using models that combine HB and somatic OHC motility indicate that HB motility is not necessary for cochlear amplification while OHC somatic motility is necessary. However we show how HB motility could work in synergy with OHC somatic motilit...

Noise Hurts Men's Hearing More, Study Shows

MedicineNet Hearing General — Tue, 06 Oct 2009 07:00:00 +0100

Title: Noise Hurts Men's Hearing More, Study ShowsCategory: Health NewsCreated: 10/5/2009 2:10:00 PMLast Editorial Review: 10/6/2009 (Source: MedicineNet Hearing General)

Vitiligo

MedicineNet Hearing General — Tue, 06 Oct 2009 07:00:00 +0100

Title: VitiligoCategory: Diseases and ConditionsCreated: 7/11/1999 5:59:00 AMLast Editorial Review: 10/6/2009 (Source: MedicineNet Hearing General)

The origin of the cochlear amplifier.

Hearing Research — Mon, 05 Oct 2009 23:00:00 +0100

Authors: Fettiplace R, Hackney C The strengths and weakness of the outer hair cell bundle and somatic motors as the source of cochlear amplification are discussed. PMID: 19818388 [PubMed - as supplied by publisher] (Source: Hearing Research)

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Top connectors of the hair bundle are required for waveform distortion and suppression masking but not cochlear amplification.

Hearing Research — Mon, 05 Oct 2009 23:00:00 +0100

Authors: Avan P, Petit C PMID: 19818389 [PubMed - as supplied by publisher] (Source: Hearing Research)

Membrane-based amplification in hearing.

Hearing Research — Mon, 05 Oct 2009 23:00:00 +0100

Authors: Brownell WE Acoustic vibrations enter and neuronal action potentials leave the inner ear. An interplay of mechanical and electrical energy results in hair cell receptor potentials that ultimately trigger neurotransmitter release at the afferent synapse. The diffusion of neurotransmitter across the synaptic cleft depolarizes 8(th) nerve terminals and initiates action potentials that travel to the central nervous system. The action potentials encode information about the spectral and temporal content of environmental sounds. The ability to localize predator or prey is improved by analyzing sounds over a wide range of frequencies resulting in an evolutionary selection pressure for detecting ever higher frequencies. Nature has incorporated diverse strategies to overcome physical c...

Differential passage of gadolinium through the mouse inner ear barriers evaluated with 4.7 T MRI.

Hearing Research — Mon, 05 Oct 2009 23:00:00 +0100

Authors: Zou J, Zhang W, Poe D, Zhang Y, Ramadan UA, Pyykkö I Magnetic resonance imaging (MRI), supplemented by contrast agents, is a powerful tool that can be used to visualise the structures of the inner ear in vivo and assess some aspects of physiology, such as the permeability of agents through membranes. The mouse is an excellent animal species for investigating human diseases, including hearing loss but detailed MRI studies with contrast have not been reported. In the present work, we aimed to demonstrate the limits of MR imaging resolution of the fine inner ear structures in the mouse and to explore the permeability of the intracochlear barriers to gadolinium- tetra-azacyclo-dodecane-tetra-acetic acid (Gd-DOTA) administered by intravenous injection (IV) or intratympanic (IT...

Acoustic analysis of voice in cochlear implant recipients with post-meningitic hearing loss

Cochlear Implants International — Mon, 05 Oct 2009 23:00:00 +0100

The objective of this study was to evaluate the critical time period between the onset of sensorineural hearing loss and cochlear implantation with respect to normal voice production in children with post-meningitic hearing loss. Acoustic measures of voice production were obtained from ten paediatric cochlear implant recipients with post-meningitic hearing loss. Acoustic measures were obtained utilising the Multi-Dimensional Voice Program and Computerized Speech Laboratory (Kay Elemetrics Corp.). Measures were based on sustained phonation of the vowel /a/. Acoustic parameters included fundamental frequency, short- and long-term frequency perturbation, and short- and long-term amplitude perturbation. Measures of fundamental frequency and short-term frequency and amplitude perturbation were ...

NAD Calls Out Netflix on Captions

National Association of the Deaf — Mon, 05 Oct 2009 16:48:14 +0100

On September 9, 2009, the National Association of the Deaf requested that Netflix provide a captioned version of “The Wizard of Oz” movie that Netflix made available online, for free, for everyone on October 3, 2009. Netflix disregarded the NAD request along with thousands of letters, emails, comments, and tweets urging Netflix to caption the movie. Today, the NAD expressed its dismay at the lack of any response from Netflix and its failure to make this 70th anniversary celebration of “The Wizard of Oz” accessible to 36 million deaf and hard of hearing viewers. read more (Source: National Association of the Deaf)

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NAD Urges FCC & Industry to Prepare for 10-Digit # Deadline

National Association of the Deaf — Mon, 05 Oct 2009 15:03:24 +0100

The Director of the NAD Law and Advocacy Center, Rosaline Crawford, along with other representatives from consumer organizations served on a Federal Communications Commission (FCC) workshop that discussed 10-digit local phone numbers for VRS and IP Relay users and the November 12, 2009 deadline for consumers to register for their numbers. read more (Source: National Association of the Deaf)

NLTC ’09 Registration Deadline Extended!

National Association of the Deaf — Thu, 01 Oct 2009 19:30:01 +0100

Over 100 people are now registered for the 2nd Annual NAD Leadership Training Conference, to be held October 29-November 1, 2009 at the Hyatt at Capitol Square in Columbus, Ohio. Take advantage of the new deadline for conference registration and hotel reservations, now extended to October 9, 2009. read more (Source: National Association of the Deaf)

Effects of shift work and intermittent noise exposure on hearing: Mechanisms and prophylactic potential.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Borchgrevink HM It is well established that intermittent noise exposure characteristically produces less hearing loss than equal energy/intensity continuous noise in animal models. Ongoing different shift work regimes open for direct studies on hearing effects of intermittent noise exposure in man without ethical concern. Amazingly, few such studies are reported. In one recent study in the present volume, noise-exposed employees working 12 hours a day for two consecutive days followed by two days off, the cycle then repeated, had significantly lower permanent hearing loss than employees working nine-hour shifts from 8 am to 5 pm Monday to Friday. This commentary refers to the few studies reported, gives a short overview of the mechanisms behind noise-induced hearing loss and t...

Effects of shift work on noise-induced hearing loss.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

In conclusion, working a 12-hour shift followed by a day off is best for workers and hearing protection should be provided in high noise areas. PMID: 19805926 [PubMed - in process] (Source: Noise and Health)

Development of a noise prediction model under interrupted traffic flow conditions: A case study for Jaipur city.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

The objective of this study is to develop an empirical noise prediction model for the evaluation of equivalent noise levels (Leq) under interrupted traffic flow conditions. A new factor tendency to blow horn (A H ) was introduced in the conventional federal highway administrative noise prediction (FHWA) model and a comparative study was made between FHWA and modified FHWA models to evaluate the best suitability of the model. Monitoring and modeling of Leq were carried out at four selected intersections of Jaipur city. After comparison of the results, it was found that the modified FHWA model could be satisfactorily applied for Indian conditions as it gives acceptable results with a deviation of 3 dB (A). In addition, statistical analysis of the data comprising measured and estimated values...

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Effects of road traffic noise and irrelevant speech on children's reading and mathematical performance.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Ljung R, Sorqvist P, Hygge S Irrelevant speech in classrooms and road traffic noise adjacent to schools have a substantial impact on children's ability to learn. Comparing the effects of different noise sources on learning may help construct guidelines for noise abatement programs. Experimental studies are important to establish dose-response relationships and to expand our knowledge beyond correlation studies. This experiment examined effects of road traffic noise and irrelevant speech on children's reading speed, reading comprehension, basic mathematics, and mathematical reasoning. A total of 187 pupils (89 girls and 98 boys), 12-13 years old, were tested in their ordinary classrooms. Road traffic noise was found to impair reading speed (P < 0.01) and basic mathematics (P...

Sound localization with an army helmet worn in combination with an in-ear advanced communications system.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Abel SM, Boyne S, Roesler-Mulroney H Conventional hearing protection devices result in decrements mainly in the ability to distinguish front from rearward sound sources. The aim of this study was to investigate the effect of wearing an earplug with advanced communications capability, in combination with an army helmet, on horizontal plane speaker identification. Ten normal-hearing male subjects were tested in a semi-reverberant sound proof booth under eight conditions defined by combinations of two levels of ear occlusion (unoccluded and occluded by the earplug) and four levels of the helmet (head bare and fitted with the helmet modified to give no, partial and full ear coverage). Percent correct speaker identification was assessed using a horizontal array of eight loudspeaker...

Expert system to predict effects of noise pollution on operators of power plant using neuro-fuzzy approach.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

This study aims to develop a neuro-fuzzy model to predict the effects of noise pollution on human work efficiency as a function of noise level, exposure time, and age of the operators doing complex type of task. PMID: 19805930 [PubMed - in process] (Source: Noise and Health)

Blink rate during tests of executive performance after nocturnal traffic noise.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Breimhorst M, Marks A, Robens S, Griefahn B This analysis is on the hypothesis that nocturnal traffic noise affects sleep quality whereas performance decrement is avoided by increased effort expressed by a decrease in blink rates (BRs) during a visual task. Twenty-four persons (12 women, 12 men; 19-28 years, 23.56 +/- 2.49 years) slept during three consecutive weeks in the laboratory while exposed to road, rail, or aircraft noise with weekly permuted changes. Each week consisted of a random sequence of a quiet night (32 dBA) and three nights with equivalent noise levels of 39, 44 and 50 dBA respectively. The polysomnogram was recorded during all nights. Every morning the participants rated their sleep quality and then completed two executive tasks (Go/Nogo-, Switch-task). Neit...

Estimates of the auditory risk from outdoor impulse noise I: Firecrackers.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

In this study, impulses produced outdoors by consumer firecrackers were recorded, described, and analyzed with respect to the amount of the auditory risk they pose to the unprotected listener under various listening conditions. Risk estimates were obtained using three contemporary damage risk criteria (DRC), including a waveform parameter-based approach (peak SPL and B duration), an energy-based criterion (A-weighted sound exposure level and equivalent continuous level), and a physiological model (the AHAAH model developed by Price and Kalb). Results from these DRC were converted into numbers of maximum permissible unprotected exposures to facilitate comparison. Acoustic characteristics of firecracker impulses varied with the distance, but only subtle differences were observed across firec...

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Estimates of auditory risk from outdoor impulse noise II: Civilian firearms.

Noise and Health — Wed, 30 Sep 2009 23:00:00 +0100

This study records, describes and analyzes impulses produced outdoors by civilian firearms with respect to the amount of auditory risk they pose to the unprotected listener under various listening conditions. Risk estimates were obtained using three contemporary damage risk criteria (DRC) including a waveform parameter-based approach (peak SPL and B-duration), an energy-based criterion (A-weighted SEL and equivalent continuous level) and a physiological model (AHAAH). Results from these DRC were converted into a number of maximum permissible unprotected exposures to facilitate interpretation. Acoustic characteristics of firearm impulses differed substantially across guns, ammunition, and microphone location. The type of gun, ammunition and the microphone location all significantly affected...

Effects of natural versus artificial spatial cues on electrophysiological correlates of auditory motion.

Hearing Research — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Getzmann S, Lewald J The effect of the type of the auditory motion stimulus on neural correlates of motion processing were investigated using high-density electroencephalography. Sound motion was implemented by (a) gradual shifts in interaural time or (b) level difference; (c) motion of virtual 3D sound sources; or (d) successive activation of 45 loudspeakers along the horizontal plane. In a subset of trials, listeners (N = 20) performed a two-alternative forced-choice motion discrimination task. Each trial began with a stationary phase of the acoustic stimulus in a central position, immediately followed by a motion of the stimulus. The motion onset elicited a specific cortical response that was dominated by large negative and positive deflections, the so-called change-N1 and ...

Age-related differences in gap detection: Effects of task difficulty and cognitive ability.

Hearing Research — Wed, 30 Sep 2009 23:00:00 +0100

Authors: Harris KC, Eckert MA, Ahlstrom JB, Dubno JR Differences in gap detection for younger and older adults have been shown to vary with the complexity of the task or stimuli, but the factors that contribute to these differences remain unknown. To address this question, we examined the extent to which age-related differences in processing speed and workload predicted age-related differences in gap detection. Gap detection thresholds were measured for 10 younger and 11 older adults in two conditions that varied in task complexity but used identical stimuli: (1) gap location fixed at the beginning, middle, or end of a noise burst and (2) gap location varied randomly from trial to trial from the beginning, middle, or end of the noise. We hypothesized that gap location uncertainty would...

National EHDI Conference Seeks Your Presentation Proposal

National Association of the Deaf — Wed, 30 Sep 2009 22:00:18 +0100

If you are a professional in an early intervention program, a teacher of deaf students, a deaf mentor, or if you interact with families with deaf and hard of hearing children in some way, you belong at the National Early Hearing Detection and Intervention (EHDI) Conference. read more (Source: National Association of the Deaf)

Midwest DeaFest Raises over $2K for NAD

National Association of the Deaf — Tue, 29 Sep 2009 23:59:13 +0100

Four state associations from Arkansas, Kansas, Missouri, and Oklahoma worked together to host the Midwest DeaFest to benefit the National Association of the Deaf (NAD) on Saturday, August 8 in Branson, Missouri. Held at the Pointe Royale Resort and Clubhouse at a central location between all four states, the Midwest DeaFest served up a delicious Southern style dinner amid a cozy environment that was enjoyed by all who attended. read more (Source: National Association of the Deaf)

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IRS YouTube Channel Features New ASL Videos

National Association of the Deaf — Tue, 29 Sep 2009 22:43:21 +0100

The National Association of the Deaf (NAD) continues its partnership with the Internal Revenue Service (IRS) to bring important tax information reaches the deaf and hard of hearing community. The new IRS YouTube ASL Channel includes a growing collection of American Sign Language (ASL) videos featuring Tax Tips, Recovery and related topics including the American Recovery and Reinvestment Act. read more (Source: National Association of the Deaf)

cefixime, Suprax

MedicineNet Hearing General — Mon, 28 Sep 2009 07:00:00 +0100

Title: cefixime, SupraxCategory: MedicationsCreated: 12/31/1997Last Editorial Review: 9/28/2009 (Source: MedicineNet Hearing General)

Expression of Aquaporins and Vasopressin type 2 receptor in the stria vascularis of the cochlea.

Hearing Research — Sun, 27 Sep 2009 23:00:00 +0100

Authors: Nishioka R, Takeda T, Kakigi A, Okada T, Takebayashi S, Taguchi D, Nishimura M, Hyodo M Recently, considerable evidence has been accumulated to support the novel view that water homeostasis in the inner ear is regulated via the vasopressin-aquaporin 2 (VP-AQP2) system in the same fashion as in the kidney. Indeed, multiple subtypes of AQPs including AQP-2 are reported to be expressed in the cochlea. However, the mechanism that underlies VP-AQP2 mediated water homeostasis remains to be elucidated. In the present study, the localization of AQP-1, -2, -3, -4, -5, -7, -8, -9, and vasopressin type 2 receptor (V(2)-R) in the stria vascularis (SV) were molecular biologically and immunohistochemically examined to evaluate the role of the AQP water channel system in water homeostasis of...

Pitch, Harmonicity and Concurrent Sound Segregation: Psychoacoustical and Neurophysiological Findings.

Hearing Research — Fri, 25 Sep 2009 23:00:00 +0100

Authors: Micheyl C, Oxenham AJ Harmonic complex tones are a particularly important class of sounds found in both speech and music. Although these sounds contain multiple frequency components, they are usually perceived as a coherent whole, with a pitch corresponding to the fundamental frequency (F0). However, when two or more harmonic sounds occur concurrently, e.g., at a cocktail party or in a symphony, the auditory system must separate harmonics and assign them to their respective F0s so that a coherent and veridical representation of the different sounds sources is formed. Here we review both psychophysical and neurophysiological (single-unit and evoked-potential) findings, which provide some insight into how, and how well, the auditory system accomplishes this task. A survey of com...

An evolutionary perspective on middle ears.

Hearing Research — Thu, 24 Sep 2009 23:00:00 +0100

Authors: Manley GA The traditional view that a tympanic middle ear developed only once, when vertebrates made the transition from fish in water to land-living animals, has been shown to be incorrect. Middle ears with a tympanum connected by one or more ossicles to the cochlea developed very much later in evolutionary history and independently in many amniote vertebrate lineages - most now extinct. The mammalian middle ear is unique but it is not simply an "improved" single-ossicle middle ear. It is a radical and fortuitous new development that owes its origin more to changes in feeding patterns than to hearing. It happened to transmit higher-frequency sounds better than single-ossicle middle ears and enabled the evolution of the high upper-frequency hearing limits of most mammals. Para...

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Measures of Hearing Threshold and Temporal Processing across the Adult Lifespan.

Hearing Research — Thu, 24 Sep 2009 23:00:00 +0100

Authors: Humes LE, Kewley-Port D, Fogerty D, Kinney D Psychophysical data on hearing sensitivity and various measures of supra-threshold auditory temporal processing are presented for large groups of young (18-35 y), middle-aged (40-55 y) and older (60-89 y) adults. Hearing thresholds were measured at 500, 1414 and 4000 Hz. Measures of temporal processing included gap-detection thresholds for bands of noise centered at 1000 and 3500 Hz, stimulus onset asynchronies for monaural and dichotic temporal-order identification for brief vowels, and stimulus onset/offset asynchronies for the monaural temporal masking of vowel identification. For all temporal-processing measures, the impact of high-frequency hearing loss in older adults was minimized by a combination of low-pass filtering the st...

Infant Head-Flattening Linked to Ear Infections

MedicineNet Hearing General — Thu, 24 Sep 2009 07:00:00 +0100

Title: Infant Head-Flattening Linked to Ear InfectionsCategory: Health NewsCreated: 9/24/2009 8:10:00 AMLast Editorial Review: 9/24/2009 (Source: MedicineNet Hearing General)

Inner Ear Function following Underlay Myringoplasty

Audiology and Neurotology — Wed, 23 Sep 2009 23:00:00 +0100

Audiol Neurotol 2010;15:149-154 (DOI:10.1159/000241095) (Source: Audiology and Neurotology)

NAD Observes International Week of the Deaf

National Association of the Deaf — Tue, 22 Sep 2009 17:44:51 +0100

This week, the NAD observes International Week of the Deaf, which is celebrated by the World Federation of the Deaf (WFD) and its national associations and their affiliates globally during the last full week of September (Monday through Sunday), culminating with International Day of the Deaf on the last Sunday of the week. read more (Source: National Association of the Deaf)