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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 33.

Hearing Aid Manufacturers
Companies that manufacture hearing aids. Most companies make digital hearing aids, and a few still make analog or body worn hearing aids. Still others make hearing aids that can resist water and sweat.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

10 Things to Stop Doing to Yourself
It's easy to get into bad habits when you're struggling to live with a chronic illness like fibromyalgia or chronic fatigue syndrome. See 10 things you should stop doing to yourself.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Get Moving May Tips
Tips to make the most of Get Moving May, from Dr. Travis Stork.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Fun: The Best Stress Relief
We all have stress in our lives, which provides us with a strong need to relax and balance the stress with fun activities. Here are some reason why fun activities provide some of the best stress relief. You will also find tips on incorporating more fun into your life.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Travel Cribs
Learn about travel cribs and playards and whether or not they are safe for your baby to sleep in when you are traveling with your newborn and infant.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Do You Have Irritable Male Syndrome? -- April 2002
, from thyroid patient advocate Mary Shomon
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Eating Disorders Awareness
Learn to recognize if your child is visiting pro ana or pro mia websites that encourage, support and teach others how to have and hide an eating disorder.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

High Tower Place
Substance abuse treatment services offered by High Tower Place Womens Facility of Clinton IA
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Prenatal Yoga Dos and Don'ts
If you are pregnant, you may have a lot of questions about whether yoga is safe for you and your baby. Yoga can be a great way to stretch, tone, and relax during pregnancy, but there are a few precautions to take, as well as a few specific ways that prenatal yoga can prepare you to deliver your baby.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Female Reproductive System
A look at the female reproductive system. Learn about the organs of the female reproductive system.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Automatonophobia
Although full blown automatonophobia, or fear of humanoid figures, is rare, a certain level of nervousness is common. Read on for more on this unique phobia.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Fiber Quiz
Basic Nutrition E-course Quiz Number Two Sorry, but this quiz requires that you have javascript
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Naturopathy and Thyroid Disease
Kevin Passero, ND is a naturopathic physician in practice in the Washington, DC metropolitan area and Annapolis, Maryland, specializes in working with patients with thyroid and hormonal imbalances. He shares his thoughts about naturopathic medicine for thyroid and hormone diagnosis and treatment in this Q&A interview.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

Sign Language Books
Top sign language books and dictionaries, from your About.com Guide.
Source: About.com Eating Disorders - May 6, 2012 Category: Eating Disorders and Weight Management Authors: deafness.guide at about.com Tags: health Source Type: news

siRNA-mediated knock-down of NOX3: therapy for hearing loss?
Abstract Cisplatin is a widely used chemotherapeutic agent that causes significant hearing loss. Previous studies have shown that cisplatin exposure is associated with increase in reactive oxygen species (ROS) in the cochlea. The inner ear expresses a unique isoform of NADPH oxidase, NOX3. This enzyme may be the primary source of ROS generation in the cochlea. The knockdown of NOX3 by pretreatment with siRNA prevented cisplatin ototoxicity, as demonstrated by preservation of hearing thresholds and inner ear sensory cells. Trans-tympanic NOX3 siRNA reduced the expression of NOX3 and biomarkers of cochlear damage, in...
Source: Cellular and Molecular Life Sciences : CMLS - May 5, 2012 Category: Cytology Authors: Rybak LP, Mukherjea D, Jajoo S, Kaur T, Ramkumar V Tags: Cell Mol Life Sci Source Type: research

'Bionic eye' implant restores men's sight
BBC News today reported that “two blind British men have had electronic retinas fitted”. Chris James, 54, and Robin Millar, 60, took part in a clinical trial coordinated by Oxford University and funded by the National Institute of Health Research. Both men have retinitis pigmentosa, a rare hereditary condition that causes gradual deterioration of the light-detecting cells in the retina, which can lead to blindness. The electronic retinas are implants containing light detectors designed to replace the lost light-detecting cells. Immediately following the procedures, when the implants were switched on, both men were abl...
Source: NHS News Feed - May 4, 2012 Category: Consumer Health News Tags: Medical practice QA articles Neurology Source Type: news

Linguistic and Attitudinal Factors in Normal-Hearing Bilingual Listeners' Perception of Degraded English Passages.
CONCLUSIONS: To fully understand bilingual clients' perception of English speech, hearing professionals should consider their attitudinal characteristics in addition to language background. PMID: 22563091 [PubMed - as supplied by publisher]
Source: American Journal of Audiology - May 4, 2012 Category: Audiology Authors: Shi LF, Farooq N Tags: Am J Audiol Source Type: research

Tiny Electronic Chips Restore Sight to 2 Blind British Men
Chris James and Robin Millar of the United Kingdom both lost their vision after birth because of a genetic condition known as retinitis pigmentosa , in which light-sensitive cells in the eye stop working. Now, surgeons have partially restored vision to both men with tiny electronic chips that promise to help the blind see the same way cochlear implants have helped the deaf hear. Teams of doctors at the Oxford Eye Hospital and King’s College Hospital in London embedded the small square chips 0.12 by 0.12 inches in a thin sheet of tissue at the backs of the men’s eyes. As soon as they were switched on, the chips ...
Source: Scientific American - Official RSS Feed - May 3, 2012 Category: Science Tags: Health,Mind & Brain Source Type: research

Tiny Electronic Chips Restore Sight to Two Blind British Men
Chris James and Robin Millar of the United Kingdom both lost their vision after birth because of a genetic condition known as retinitis pigmentosa , in which light-sensitive cells in the eye stop working. Now, surgeons have partially restored vision to both men with tiny electronic chips that promise to help the blind see the same way cochlear implants have helped the deaf hear. Teams of doctors at the Oxford Eye Hospital and King’s College Hospital in London embedded the small square chips 0.12 by 0.12 inches in a thin sheet of tissue at the backs of the men’s eyes. As soon as they were switched on, the chips ...
Source: Scientific American - Official RSS Feed - May 3, 2012 Category: Science Tags: Health,Mind & Brain Source Type: research

Cortical processing of musical sounds in children with Cochlear Implants
Conclusions: The similarities of neurocognitive processing are surprising in the light of the limited auditory input provided by the CI, suggesting that many types of changes are adequately processed by the CI children.Significance: Our results indicate that CI children’s auditory cortical functioning may be enhanced, and difficulties in auditory perception and in attention switching towards sound events alleviated, by multisensory musical activities.
Source: Clinical Neurophysiology - May 3, 2012 Category: Neuroscience Authors: Ritva Torppa, Emma Salo, Tommi Makkonen, Hannu Loimo, Johannes Pykäläinen, Jari Lipsanen, Andrew Faulkner, Minna Huotilainen Tags: Psychophysiology and Psychopathology Source Type: research

Hereditary spastic paraplegias with autosomal dominant, recessive, X-linked, or maternal trait of inheritance
Abstract: Hereditary spastic paraplegia (SPG) is a clinically and genetically heterogeneous group of neurodegenerative disorders that are clinically characterised by progressive spasticity and weakness of the lower-limbs (pure SPG) and, majoritorian, additional more extensive neurological or non-neurological manifestations (complex or complicated SPG). Pure SPG is characterised by progressive spasticity and weakness of the lower-limbs, and occasionally sensory disturbances or bladder dysfunction. Complex SPGs additionally include cognitive impairment, dementia, epilepsy, extrapyramidal disturbances, cerebellar involvement,...
Source: Journal of the Neurological Sciences - May 3, 2012 Category: Neurology Authors: Josef Finsterer, Wolfgang Löscher, Stefan Quasthoff, Julia Wanschitz, Michaela Auer-Grumbach, Giovanni Stevanin Tags: Review Source Type: research

The influence of language deprivation in early childhood on L2 processing: An ERP comparison of deaf native signers and deaf signers with a delayed language acquisition
Conclusions: The results of the present study suggest that language deprivation in early childhood alters the cerebral organization of syntactic language processing mechanisms for L2. Semantic language processing instead was unaffected.
Source: BMC Neuroscience - Latest articles - May 3, 2012 Category: Neuroscience Authors: Nils SkotaraUta SaldenMonique KügowBarbara Hänel-FaulhaberBrigitte Röder Source Type: research

The demise of the caboose... and the need for word consciousness.
PMID: 22524089 [PubMed - in process]
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Paul PV Tags: Am Ann Deaf Source Type: research

Deaf and hard of hearing students' problem-solving strategies with signed arithmetic story problems.
Abstract The use of problem-solving strategies by 59 deaf and hard of hearing children, grades K-3, was investigated. The children were asked to solve 9 arithmetic story problems presented to them in American Sign Language. The researchers found that while the children used the same general types of strategies that are used by hearing children (i.e., modeling, counting, and fact-based strategies), they showed an overwhelming use of counting strategies for all types of problems and at all ages. This difference may have its roots in language or instruction (or in both), and calls attention to the need for conceptual ...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Pagliaro CM, Ansell E Tags: Am Ann Deaf Source Type: research

Family counseling in the Netherlands for Turkish-origin parents of deaf children with a cochlear implant.
Abstract Cultural elements such as language, beliefs about health, and family context play important roles in the uptake of rehabilitation and treatment of deafness. Because of cultural issues, minority groups often do not receive optimal care. Focusing on the Netherlands, the researchers explored how the rehabilitation and counseling of deaf children of Turkish-origin parents can be improved. The most important findings were that (a) most parents initially did not believe their child was deaf and regretted later that they did not start hearing rehabilitation earlier; (b) parents had little confidence in the Dutch ...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Wiefferink CH, Vermeij BA, Uilenburg N Tags: Am Ann Deaf Source Type: research

Reread-adapt and answer-comprehend intervention with Deaf and hard of hearing readers: effect on fluency and reading achievement.
Abstract The researchers investigated the effect of the Reread-Adapt and Answer-Comprehend intervention (Therrien, Gormley, & Kubina, 2006) on the reading fluency and achievement of d/Deaf and hard of hearing elementary-level students. Children in the third, fifth, and sixth grades at a state school for d/Deaf and hard of hearing students received a fluency intervention that was supplemental to their regular reading instruction. Significant improvement was found on a generalized measure of reading fluency after intervention. Though the researchers found no significant improvement in performance on a generalized...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Schirmer BR, Schaffer L, Therrien WJ, Schirmer TN Tags: Am Ann Deaf Source Type: research

Chinese deaf and hard of hearing adolescents' awareness of thematic and taxonomic relations among ordinary concepts represented by pictures and written words.
Abstract Inspired by a previous study of Korean deaf and hard of hearing adolescents, the researchers conducted a priming task of living-nonliving categorization with a sample of Chinese deaf and hard of hearing adolescents. The sample in this study had significantly lower accuracy levels for the thematically related items than for the taxonomically related items and significantly larger differences in reaction times than a group of hearing adolescents when stimuli were changed from pictures to written words. However, they were not significantly different from the hearing adolescents in their performance with the t...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Li D, Gao K, Zhang Y, Wu X Tags: Am Ann Deaf Source Type: research

Addressing intersections in HIV/AIDS and mental health: the role of organizations for d/Deaf and hard of hearing individuals in South Africa.
Abstract Like south africans generally, d/Deaf and hard of hearing South Africans are at risk of HIV/AIDS and mental disorders resulting from barriers to communication and care. In interviews and a focus group, members of South African organizations for d/Deaf and hard of hearing individuals all gave priority to HIV/AIDS education and prevention, citing risks resulting from language and communication barriers, inadequate schooling, and insufficient information in South African Sign Language. Participants gave varied descriptions of HIV/AIDS programs in schools for d/Deaf and hard of hearing students and described s...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Mall S, Swartz L Tags: Am Ann Deaf Source Type: research

Promoting vocabulary learning in young children who are d/Deaf and hard of hearing: translating research into practice.
Abstract Vocabulary knowledge is strongly associated with reading achievement and becomes increasingly predictive of overall reading proficiency as children progress through the elementary grades. Children who are d/Deaf and hard of hearing often begin schooling with small meaning vocabularies, a disadvantage that puts them at risk of struggling to learn to read. Recent research on vocabulary intervention with young children who have typical hearing demonstrates the effectiveness of targeted, contextualized instruction on children's word learning and provides insights for early childhood educators of young d/Deaf a...
Source: American Annals of the Deaf - May 2, 2012 Category: Audiology Authors: Williams C Tags: Am Ann Deaf Source Type: research

Deaf Awareness in the Workplace
The importance of Deaf awareness in the workplace - With one in six people in the UK suffering from some degree of hearing loss, organisations, particularly those with front line members of staff, are being encouraged to raise awareness of the different types of deafness.
Source: Disabled World - May 2, 2012 Category: Disability Tags: Deaf Communication Source Type: news

Neural Mechanisms Supporting Robust Discrimination of Spectrally and Temporally Degraded Speech
We report the first evidence of behavioral discrimination of degraded speech sounds by an animal model. Our results show that rats are able to accurately discriminate both consonant and vowel sounds even after significant spectral and temporal degradation. The degree of degradation that rats can tolerate is comparable to human listeners. We observed that neural discrimination based on spatiotemporal patterns (spike timing) of A1 neurons is highly correlated with behavioral discrimination of consonants and that neural discrimination based on spatial activity patterns (spike count) of A1 neurons is highly correlated with...
Source: JARO - Journal of the Association for Research in Otolaryngology - May 2, 2012 Category: ENT & OMF Tags: JARO - Journal of the Association for Research in Otolaryngology Source Type: research

Prelude: Noise-induced tinnitus and hearing loss in the military.
Abstract Hearing is critical to the performance of military personnel and is integral to the rapid and accurate processing of speech information. Thus, noise-induced hearing loss (NIHL) represents a severe impairment that reduces military effectiveness, safety, and quality of life. With the high levels of noise to which military personnel are exposed and the limited protection afforded by hearing conservation programs, it should be no surprise that annual Veterans Affairs disability payments for tinnitus and hearing loss exceeded $1.2 billion for 2009 and continue to increase. Military personnel work in high-noise ...
Source: Hearing Research - May 2, 2012 Category: Audiology Authors: Yankaskas K Tags: Hear Res Source Type: research

Hearing and touch have common genetic basis: Gene mutation leads to impairment of two senses
New research shows that hearing and touch have a common genetic basis. In patients with Usher syndrome, a hereditary form of deafness accompanied by impaired vision, researchers have discovered a gene mutation that is also causative for the patients' impaired touch sensitivity.
Source: ScienceDaily Headlines - May 1, 2012 Category: Science Source Type: news

Eosinophilic otitis media: CT and MRI findings and literature review.
We report here the CT and MRI findings of two EOM cases and review the clinical and histopathologic findings of this recently described disease entity. PMID: 22563277 [PubMed - in process]
Source: Korean J Radiol - May 1, 2012 Category: Radiology Authors: Chung WJ, Lee JH, Lim HK, Yoon TH, Cho KJ, Baek JH Tags: Korean J Radiol Source Type: research

Musical pitch discrimination by cochlear implant users.
CONCLUSIONS: Acoustic characteristics determine the complexity of the electrical stimulation pattern, which directly affects performance in pitch discrimination. A place pattern with a clear and regular low-order harmonic structure is most important for good pitch discrimination. A clear F0-related temporal pattern is also useful when the F0 is low. Pitch perception performance will worsen when there is interference in the high-frequency channels. PMID: 22724279 [PubMed - indexed for MEDLINE]
Source: The Annals of Otology, Rhinology, and Laryngology - May 1, 2012 Category: ENT & OMF Authors: Ping L, Yuan M, Feng H Tags: Ann Otol Rhinol Laryngol Source Type: research

Hearing loss: help for the young and old.
Abstract Two simple questions (one for parents of newborns, one for older patients) can improve hearing loss identification. Hearing aid troubleshooting tips can help you overcome 6 common patient objections. PMID: 22577629 [PubMed - indexed for MEDLINE]
Source: The Journal of Family Practice - May 1, 2012 Category: Practice Management Authors: George P, Farrell TW, Griswold MF Tags: J Fam Pract Source Type: research

Attenuation of peak sound pressure levels of shooting noise by hearing protective earmuffs.
Abstract Transmission losses (TL) to highly impulsive signals generated by three firearms have been measured for two ear muffs, using both a head and torso simulator and a miniature microphone located at the ear canal entrance (MIRE technique). Peak SPL TL have been found to be well approximated by 40 ms short-L eq TL. This has allowed the use of transmissibilities and correction factors for bone conduction and physiological masking appropriate for continuous noise, for the calculation of REAT-type peak insertion losses (IL). Results indicate that peak IL can be well predicted by estimates based on one-third octave...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Lenzuni P, Sangiorgi T, Cerini L Tags: Noise Health Source Type: research

Temporal and speech processing skills in normal hearing individuals exposed to occupational noise.
Abstract Prolonged exposure to high levels of occupational noise can cause damage to hair cells in the cochlea and result in permanent noise-induced cochlear hearing loss. Consequences of cochlear hearing loss on speech perception and psychophysical abilities have been well documented. Primary goal of this research was to explore temporal processing and speech perception Skills in individuals who are exposed to occupational noise of more than 80 dBA and not yet incurred clinically significant threshold shifts. Contribution of temporal processing skills to speech perception in adverse listening situation was also ev...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Kumar UA, Ameenudin S, Sangamanatha AV Tags: Noise Health Source Type: research

An investigation on the noise reduction performance of profiled rigid median barriers at highways.
Abstract Median barriers as a portion of a divided highway are provided to minimize the cross-median crashes. Moreover, median barriers similar to roadside noise barriers could protect people from transportation noise. Thus, there is a need to investigate various median barrier models to identify changes of insertion loss over a simple rigid barrier. In order to estimate the acoustical influence of median barrier's profile in the shadow zone, different median barrier models are presented and their insertion losses are calculated over a frequency range from 50 to 4000 Hz using a two-dimensional boundary element meth...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Monazzam MR, Fard SM Tags: Noise Health Source Type: research

Research on road traffic noise and human health in India: review of literature from 1991 to current.
This article reviews the literature on research conducted during the last two decades on traffic noise impacts in India. Road traffic noise studies in India are fewer and restricted only to the metropolitan areas. The studies over the years have also focused on the monitoring, recording, analysis, modeling, and to some extent mapping related themes. Negligible studies are observed in areas of physiological and sleep research exposure-effect context. Most impact studies have been associated with annoyance and attitudinal surveys only. Little scientific literature exists related to effects of traffic noise on human physiolog...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Banerjee D Tags: Noise Health Source Type: research

Prevalence of permanent hearing threshold shift among workers of Indian iron and steel small and medium enterprises: a study.
The objective of this study is to determine the prevalence of permanent hearing threshold shift among the workers engaged in Indian iron and steel small and medium enterprises (SMEs) and compared with control group subjects. As a part of hearing protection intervention, audiometric tests were conducted at low (250-1000 Hz), medium (1500-3000 Hz), and high (4000-8000 Hz) frequencies. The occurrence of hearing loss was determined based on hearing threshold levels with a low fence of 25 dB. Comparisons were made for hearing threshold at different frequencies between the exposed and control groups using Student's t test. ANOVA...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Singh LP, Bhardwaj A, Kumar DK Tags: Noise Health Source Type: research

Effects of noise in primary schools on health facets in German teachers.
Abstract Empirical research indicates that children and teachers are exposed to mean sound levels between 65 and 87 dB (A) and peak sound levels of 100 dB (A) in schools, which may lead to hearing loss and mental health problems. A questionnaire containing 13 targeted questions about noise and sensitivity to noise was distributed to 43 teachers aged between 25 and 64 years at five different primary schools in the Cologne municipal area. The small number of interrogated teachers leads to a wide range of deviation and little significance in the results. Thus, several results are reported following tendencies. Signi...
Source: Noise and Health - May 1, 2012 Category: Audiology Authors: Eysel-Gosepath K, Daut T, Pinger A, Lehmacher W, Erren T Tags: Noise Health Source Type: research

Questionable reliability of the speech-evoked auditory brainstem response (sABR) in typically-developing children.
PMID: 22446178 [PubMed - in process]
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: McFarland DJ, Cacace AT Tags: Hear Res Source Type: research

Low-frequency modulated quadratic and cubic distortion product otoacoustic emissions in humans.
Abstract Previous studies have used low-frequency tones to modulate distortion product otoacoustic emissions (DPOAEs). The cubic DPOAE (CDPOAE) is mostly chosen because amplitudes sufficient for modulation can be evoked with moderate sound pressure levels. Quadratic DPOAEs (QDPOAEs) however, are more sensitive to minute changes of the cochlear operating point (OP) and are better suited to assess changes of the cochlear OP. Here, we compare the properties of low-frequency (30 Hz, 80-120 dB SPL) modulated CDPOAE and QDPOAEs evoked with f(2) = 2 and 5 kHz in human subjects with normal hearing. The modulation depth was...
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Drexl M, Gürkov R, Krause E Tags: Hear Res Source Type: research

Factors affecting predicted speech intelligibility with cochlear implants in an auditory model for electrical stimulation.
Abstract A model of the auditory response to stimulation with cochlear implants (CIs) was used to predict speech intelligibility in electric hearing. The model consists of an auditory nerve cell population that generates delta pulses as action potentials in response to temporal and spatial excitation with a simulated CI signal processing strategy. The auditory nerve cells are modeled with a leaky integrate-and-fire model with membrane noise. Refractory behavior is introduced by raising the threshold potential with an exponentially decreasing function. Furthermore, the action potentials are delayed to account for la...
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Fredelake S, Hohmann V Tags: Hear Res Source Type: research

MicroRNAs in inner ear biology and pathogenesis.
This article reviews recent developments in miRNA research in the field of inner ear biology. A brief history of miRNA discovery is discussed, and their genomics and functional roles are described. Advances in the understanding of miRNA involvement in inner ear development in the zebrafish and the mouse are presented. Finally, this review highlights the potential roles of miRNAs in genetic hearing loss, hair cell regeneration, and inner ear pathogenesis resulting from various pathological insults. PMID: 22484222 [PubMed - in process]
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Patel M, Hu BH Tags: Hear Res Source Type: research

Auditory outcomes following implantation and electrical stimulation of the semicircular canals.
Abstract We measured auditory brainstem responses (ABRs) in eight Rhesus monkeys after implantation of electrodes in the semicircular canals of one ear, using a multi-channel vestibular prosthesis based on cochlear implant technology. In five animals, click-evoked ABR thresholds in the implanted ear were within 10 dB of thresholds in the non-implanted control ear. Threshold differences in the remaining three animals varied from 18 to 69 dB, indicating mild to severe hearing losses. Click- and tone-evoked ABRs measured in a subset of animals before and after implantation revealed a comparable pattern of threshold ch...
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Bierer SM, Ling L, Nie K, Fuchs AF, Kaneko CR, Oxford T, Nowack AL, Shepherd SJ, Rubinstein JT, Phillips JO Tags: Hear Res Source Type: research

Midbrain responses to micro-stimulation of the cochlea using high density thin-film arrays.
Abstract A broader activation of auditory nerve fibres than normal using a cochlear implant contributes to poor frequency discrimination. As cochlear implants also deliver a restricted dynamic range, this hinders the ability to segregate sound sources. Better frequency coding and control over amplitude may be achieved by limiting current spread during electrical stimulation of the cochlea and positioning electrodes closer to the modiolus. Thin-film high density microelectrode arrays and conventional platinum ring electrode arrays were used to stimulate the cochlea of urethane-anaesthetized rats and responses compar...
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Allitt BJ, Morgan SJ, Bell S, Nayagam DA, Arhatari B, Clark GM, Paolini AG Tags: Hear Res Source Type: research

A long-term high-fat diet increases oxidative stress, mitochondrial damage and apoptosis in the inner ear of D-galactose-induced aging rats.
Abstract In humans, chronic dyslipidemia associated with elevated triglycerides may reduce auditory function. However, there is little evidence available in the literature concerning the effects of a long-term high-fat diet (HFD) on the inner ears of animals. The purpose of this study was to investigate the effect of 12 month-HFD on the inner ear of Sprague-Dawley rats and on the D-galactose (D-gal)-induced aging process in the inner ear. We found that 12 month-HFD markedly elevated the auditory brainstem response (ABR) threshold in the high-frequency region. The HFD significantly increased the generation of reacti...
Source: Hearing Research - May 1, 2012 Category: Audiology Authors: Du Z, Yang Y, Hu Y, Sun Y, Zhang S, Peng W, Zhong Y, Huang X, Kong W Tags: Hear Res Source Type: research