Evaluating Perceptual Benefits Of Bilateral Cochlear Implants For Young Children And Infants
Funder
National Health and Medical Research Council
Funding Amount
$452,843.00
Summary
The cochlear implant (bionic ear) has revolutionised communication for children with profound hearing loss. Nevertheless, children with the standard single implant still face huge challenges in educational and social settings. Difficulties include understanding speech that is soft, or speech in noisy environments, such as the classroom. Also, with one implant, children cannot locate the source of sound, such as the speaker in a group conversation, team-mates during sport, or an oncoming car. Res ....The cochlear implant (bionic ear) has revolutionised communication for children with profound hearing loss. Nevertheless, children with the standard single implant still face huge challenges in educational and social settings. Difficulties include understanding speech that is soft, or speech in noisy environments, such as the classroom. Also, with one implant, children cannot locate the source of sound, such as the speaker in a group conversation, team-mates during sport, or an oncoming car. Research with other normal hearing and hearing impaired groups suggests that two (bilateral) implants may possibly improve performance in these conditions. Although hundreds of children worldwide have received bilateral implants, very limited evidence is available to indicate whether two implants are significantly better than one, especially for young children. The main aim of the research is to evaluate the improvement in listening performance when young children and infants use two implants as compared with one. An additional aim is to gain clinical knowledge of bilateral implant use in order to develop selection criteria and management protocols for young bilateral candidates in the future. Results of this research will determine if bilateral implants should become a standard option for young children at the RVEEH-University of Melbourne Implant Clinic. The results will be published and presented internationally to influence clinical practice worldwide. All children using a cochlear implant, or in need of one in the future, will benefit as the study outcomes will indicate the best choice of hearing devices for individual children, and help to determine best-practice management if bilateral implants become an option for all children.Read moreRead less
Occupational Hearing Loss Induced By Solvents And Noise: Development Of New Strategies For Hearing Loss Prevention Programs In The Workplace
Funder
National Health and Medical Research Council
Funding Amount
$252,088.00
Summary
There are no guidelines on how to prevent and monitor the effects of solvents on hearing. There is an urgent need of an audiological test battery capable of detecting early signs of occupational solvent-induced hearing loss (OSIHL). It is the aim of this research to a) investigate the influence of solvent and noise exposure on the function of the auditory system, and b) determine the tests with the highest discriminatory power to detect early signs of OSIHL that can be used in the workplace.
Designing distanced intergenerational interaction with tangible technology. Older people and their young relatives/grandchildren who are geographically distanced cannot currently experience closeness in tangible ways, which are the natural ways they would play and build relationships in “real” life. Enabling this connection would have positive impacts for both groups, and two types of technologies – Mixed Reality and Tangibles - can be explored to allow us to understand how to do this. We will d ....Designing distanced intergenerational interaction with tangible technology. Older people and their young relatives/grandchildren who are geographically distanced cannot currently experience closeness in tangible ways, which are the natural ways they would play and build relationships in “real” life. Enabling this connection would have positive impacts for both groups, and two types of technologies – Mixed Reality and Tangibles - can be explored to allow us to understand how to do this. We will develop approaches to distanced tangible intergenerational interaction which are designed specifically to increase intergenerational closeness and to be innovative and subtle so that they fit seamlessly into the lives of older people and young children.Read moreRead less
Early Indicators Of Noise Injury: Are Decreased Auditory Processing Skills Evident In Noise-exposed Adults Prior To Diagnosis Of Hearing Loss?
Funder
National Health and Medical Research Council
Funding Amount
$367,605.00
Summary
Recent research indicates that noise-exposed individuals with similar hearing thresholds to non-noise exposed counterparts are more likely to have diminished temporal and spectral auditory processing abilities. This research aims to determine the relationship between noise exposure levels and auditory processing difficulties; the influence of musical training in ameliorating these difficulties; and a neurological model of causation, operation and possible remediation of these difficulties.
Intrinsic Hearing Protection Mechanisms: A Pathway To Prevention Of Noise-induced Hearing Loss
Funder
National Health and Medical Research Council
Funding Amount
$625,900.00
Summary
Noise-induced hearing loss (NIHL) is a significant contributor to the total burden of disease. We recently determined that when the ear is exposed to sustained noise, the cochlea is protected from damage by activation of a specific (P2X2) receptor, evident as reversible hearing adaptation. This study will determine the downstream signalling from this receptor. This will support assessment of vulnerability to NIHL and contribute to development of hearing therapeutics.
Cochlear Type II Neurons In Contralateral Suppression
Funder
National Health and Medical Research Council
Funding Amount
$459,434.00
Summary
Sound in one ear affects hearing in the other ear. This contralateral suppression is important for hearing attention and protection from noise damage. We will test the hypothesis that cochlear type II sensory neurons provide the sensory input for this process using models where neuronal development is altered, or the neurons are removed. The study addresses hearing disability in society, facilitating cochlear prosthesis development and the understanding of hearing loss.
Developing Accessible Playgrounds for Children with Vision Impairment. Children who are blind or have low vision (BLV) often have difficulties accessing and interacting with playgrounds, most of which are not equipped to support them. Through consultation, collaboration and co-creation with the BLV community, foundational knowledge on the user experience of playgrounds, an evaluation framework for auditing existing playgrounds and design guidelines for creating or retrofitting playgrounds will b ....Developing Accessible Playgrounds for Children with Vision Impairment. Children who are blind or have low vision (BLV) often have difficulties accessing and interacting with playgrounds, most of which are not equipped to support them. Through consultation, collaboration and co-creation with the BLV community, foundational knowledge on the user experience of playgrounds, an evaluation framework for auditing existing playgrounds and design guidelines for creating or retrofitting playgrounds will be developed that support the unique challenges of BLV children and carers. Importantly it will promote access, orientation, physical and social play for BLV children, with improved cognitive, physical and social development, thus enabling a more inclusive and healthy society.Read moreRead less
Auditory Processing Deficits In Specific Language Impairment And Specific Reading Disability:Their Effects And Treatment
Funder
National Health and Medical Research Council
Funding Amount
$314,250.00
Summary
One possible cause of specific language impairment (SLI) and specific reading disability (SRD; commonly known as dyslexia) is an inability to discriminate between sounds. Such an impairment could affect the ability to discriminate between simple speech sounds (phonemes) which are the basic building blocks for developing spoken language and reading skills. How many children with SLI or SRD have poor sound discrimination? What pattern of spoken language and reading impairments do these children ha ....One possible cause of specific language impairment (SLI) and specific reading disability (SRD; commonly known as dyslexia) is an inability to discriminate between sounds. Such an impairment could affect the ability to discriminate between simple speech sounds (phonemes) which are the basic building blocks for developing spoken language and reading skills. How many children with SLI or SRD have poor sound discrimination? What pattern of spoken language and reading impairments do these children have as a result of this impairment? Can poor sound discrimination be fixed? If it can, does it improve spoken language and reading impairments? And if it does, does it have an immediate effect or does it take some time to make a difference? These are some of the questions that will be addressed by this research. The answers will help us develop a training program that focuses specifically on improving the sound discrimination abilities of children who really need it. This will be a more efficient and inexpensive (if not free) than the Fast ForWord program that trains multiple non-verbal and verbal processing abilities regardless of whether a child has an impairment in all (or any) of these abilities and is therefore time consuming (approximately 80 hours) and expensive (approximately $AUD2000). The data will also help up better identify the spoken and written language profiles that characterise children who have sound discrimination deficits so we can better predict whether they would benefit from training programs such as Fast ForWord. And the data will tell use whether impaired sound discrimination can be used to predict whether infants might be at risk for later spoken language and reading problems.Read moreRead less
Organization And Function Of Primate Auditory Cortex
Funder
National Health and Medical Research Council
Funding Amount
$271,671.00
Summary
The conscious perception of speech and other sounds depends on processing within a brain region known as the auditory cortex. Compared to other brain areas, relatively little is known about the organization and function of this structure. Recent studies have proposed that the auditory cortex may be anatomically subdivided into functional modules, each of which is specialized for processing different types of information. However, the evidence for multiple processing streams is fragmentary, and n ....The conscious perception of speech and other sounds depends on processing within a brain region known as the auditory cortex. Compared to other brain areas, relatively little is known about the organization and function of this structure. Recent studies have proposed that the auditory cortex may be anatomically subdivided into functional modules, each of which is specialized for processing different types of information. However, the evidence for multiple processing streams is fragmentary, and not entirely consistent. The proposed experiments will combine anatomical and physiological approaches to evaluate the functional organization of auditory cortex in the primate brain. We will map the electrical responses of single brain cells to various complex sounds across the brain surface, and inject dyes to label pathways linking brain areas to one another. The data will allow us to determine whether specific subdivisions of the auditory cortex are specialized for processing different types of infomation, and whether specific subdivisions are linked together to form processing streams specialized for sound recognition and space perception. The results will advance our understanding of the neuronal processing involved in the perception of sound, with possible implications for speech perception. This will help to understand the consequences of brain damage, and may inform the development of hearing aids and artificial voice recognition systems. In addition, this study will help to develop a primate model for studying brain mechanisms of sound recognition that should be useful in research on cochlear implants.Read moreRead less
Organization Of Descending Auditory Projections From Inferior Colliculus To Cochlear Nucleus
Funder
National Health and Medical Research Council
Funding Amount
$473,121.00
Summary
Sensory information gains awareness by ascending brain pathways to reach consciousness. Descending projections, however, have grown in importance because of implications for feedback management of ascending signals. Studies of these pathways will provide insight into auditory processing with respect to selective volume control, calibration adjustments between the two ears, and the extraction of signals from background noise. The data could lead to new strategies for treating hearing disorders.