Neurocognitive substrates of naming facilitation in aphasia. This research directly addresses the national research priority goal of ageing well, ageing productively, by providing foundational knowledge for improved outcomes in the growing population of individuals in Australia with language impairments from age-related disease. Outcomes of the proposed research will include (1) development of a new theory of word production which can improve treatment of language impairment, (2) an enhanced und ....Neurocognitive substrates of naming facilitation in aphasia. This research directly addresses the national research priority goal of ageing well, ageing productively, by providing foundational knowledge for improved outcomes in the growing population of individuals in Australia with language impairments from age-related disease. Outcomes of the proposed research will include (1) development of a new theory of word production which can improve treatment of language impairment, (2) an enhanced understanding of the cognitive and brain mechanisms involved in word production and its treatment after stroke, and (3) postgraduate training in state-of-the-art cognitive neuroimaging and language neuroscience research. Read moreRead less
An investigation of respiration in stuttering. Australia leads the world in stuttering research, and this project will maintain that profile. The research aims to establish if breathing has a causal role in stuttering. The new knowledge produced will support or weaken current theories of the cause of stuttering and will contribute to understanding the nature of the disorder. In particular, it will be applied to develop more effective and efficient treatments for chronic stuttering.
Establishing the relationship between anxiety and stuttering. The present project will establish basic knowledge about the disorder of stuttering, which will contribute to offsetting the personal and community costs of the disorder by guiding empirical investigations into its nature and the development of future treatments. Further benefits at the population level will occur by provision to the public of basic information about the disorder assembled from this project. By conveying information f ....Establishing the relationship between anxiety and stuttering. The present project will establish basic knowledge about the disorder of stuttering, which will contribute to offsetting the personal and community costs of the disorder by guiding empirical investigations into its nature and the development of future treatments. Further benefits at the population level will occur by provision to the public of basic information about the disorder assembled from this project. By conveying information from the present project to clinicians who treat stuttering patients, the project will benefit Australians who stutter.Read moreRead less
Children with speech impairment: A population study of prevalence, severity, impact and service provision. Compared to the general community, adults who had a speech impairment as a child typically achieve lower levels of education, have greater literacy problems, experience significant social problems and discrimination, and have decreased occupational opportunities. The social and economic cost of untreated speech impairment for individuals, schools and society is large. This landmark study wi ....Children with speech impairment: A population study of prevalence, severity, impact and service provision. Compared to the general community, adults who had a speech impairment as a child typically achieve lower levels of education, have greater literacy problems, experience significant social problems and discrimination, and have decreased occupational opportunities. The social and economic cost of untreated speech impairment for individuals, schools and society is large. This landmark study will identify strengths and limitations in the health and education sectors regarding appropriate and holistic services for children with speech impairment combining identified prevalence, severity and impact data.Read moreRead less
The roles of spectral cues and auditory plasticity in auditory localisation, speech segregation and speech intelligibility. Our recent work shows that high frequency energy in speech is important for the localisation of speech and may also aid in improving speech intelligibility in noisy environments. The work proposed here will systematically explore this somewhat surprising new finding and the results will be incorporated into a predictive model of speech intelligibility under spatial listenin ....The roles of spectral cues and auditory plasticity in auditory localisation, speech segregation and speech intelligibility. Our recent work shows that high frequency energy in speech is important for the localisation of speech and may also aid in improving speech intelligibility in noisy environments. The work proposed here will systematically explore this somewhat surprising new finding and the results will be incorporated into a predictive model of speech intelligibility under spatial listening conditions. This work includes a systematic study of auditory functional plasticity to changes in the spatial cues. Taken together, the outcomes of this work will unlock a range of new approaches to enhancing spatial hearing in multi-channel communication devices and spatial hearing aids.Read moreRead less
Acoustic, spatial and informational cues used to solve the cocktail party problem. Speech is the principal mode of human communication and yet we understand little about how we are able to concentrate on one talker against a noisy background. Significant improvements in supporting listening by the hearing impaired, in teleconferencing systems and computer speech interfaces are dependent on a more advanced understanding of how we solve this cocktail party problem. This research explores the acous ....Acoustic, spatial and informational cues used to solve the cocktail party problem. Speech is the principal mode of human communication and yet we understand little about how we are able to concentrate on one talker against a noisy background. Significant improvements in supporting listening by the hearing impaired, in teleconferencing systems and computer speech interfaces are dependent on a more advanced understanding of how we solve this cocktail party problem. This research explores the acoustic, spatial and informational cues used by the healthy auditory system to achieve this remarkable feat of signal processing. There is significant potential for commercialization of the IP that will arise from this research.Read moreRead less
Phonological effects on the development of inflectional morphology. This project investigates the mechanisms underlying typically developing children's variable omission of inflectional morphemes (for example, plural, past tense). The results will have significant implications for the evaluation and design of interventions for language-delayed populations where serious problems of communication persist.
How Strict is the Mother Tongue? Using Dialects to Probe Early Speech Perception and Word Recognition. This project will 1)advance knowledge of toddler word representations and their developmental precursors; 2) contribute to theories of phonological vs phonetic properties of spoken language; 3) explain how experience with the ambient language shapes children's phonological and lexical development. Moreover, the findings will 4) offer crucial new insights into sources of developmental disorders ....How Strict is the Mother Tongue? Using Dialects to Probe Early Speech Perception and Word Recognition. This project will 1)advance knowledge of toddler word representations and their developmental precursors; 2) contribute to theories of phonological vs phonetic properties of spoken language; 3) explain how experience with the ambient language shapes children's phonological and lexical development. Moreover, the findings will 4) offer crucial new insights into sources of developmental disorders (language delay, dyslexia) leading to improved early diagnosis and treatment; 5) bear on issues of second language learning; and by understanding the process by which young learners handle dialect variability, 6) provide insights into how automatic speech recognition systems can be made more robust to dialectal and foreign accent differences.
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Development of second language phonetic and phonological categories. The majority of the world's population speaks two or more languages, yet we know little about how multiple languages are accommodated within a single speaker. Why do children appear to learn a second language 'like a native' but adults invariably develop a clearly perceptible foreign accent? This project investigates a little-known fact - adult second language speakers also 'hear' with a foreign accent. As Australia becomes inc ....Development of second language phonetic and phonological categories. The majority of the world's population speaks two or more languages, yet we know little about how multiple languages are accommodated within a single speaker. Why do children appear to learn a second language 'like a native' but adults invariably develop a clearly perceptible foreign accent? This project investigates a little-known fact - adult second language speakers also 'hear' with a foreign accent. As Australia becomes increasingly multilingual increasing our understanding of the human capacity for language learning would strengthen Australia's social and economic fabric by leading to improved educational practices, work prospects for migrants and, most importantly, understanding between cultures.Read moreRead less
The perception/production link in child language. Children with hearing loss experience continuing language difficulties, with major knock-on effects on educational and social outcomes. This project aims to uncover the connected perception and production processes that underpin these language challenges for children with hearing loss, focussing on a speech patterns also found in younger normal-hearing toddlers, and using innovative technologies that can generalize to the clinical practice. The p ....The perception/production link in child language. Children with hearing loss experience continuing language difficulties, with major knock-on effects on educational and social outcomes. This project aims to uncover the connected perception and production processes that underpin these language challenges for children with hearing loss, focussing on a speech patterns also found in younger normal-hearing toddlers, and using innovative technologies that can generalize to the clinical practice. The project outcomes will significantly advance theories of child language development, and promise to inform more accurate and better-targeted intervention for children with hearing loss, providing social benefit by improving their listening and speaking skills.Read moreRead less