Optimal Training Methods for Lexical Tone Perception by Children with Cochlear Implants: Application of Experimental Psychology Techniques. Cochlear implants (CIs) stimulate the auditory nerve via electrodes in the cochlear to provide auditory information to people who would otherwise be functionally deaf. Cochlear site stimulation is at a constant rate so, despite the genius of the CI, it cannot convey pitch information effectively. Such information is essential for perceiving and speaking ton ....Optimal Training Methods for Lexical Tone Perception by Children with Cochlear Implants: Application of Experimental Psychology Techniques. Cochlear implants (CIs) stimulate the auditory nerve via electrodes in the cochlear to provide auditory information to people who would otherwise be functionally deaf. Cochlear site stimulation is at a constant rate so, despite the genius of the CI, it cannot convey pitch information effectively. Such information is essential for perceiving and speaking tone languages, in which word meaning depends on consonants, vowels, and tones (conveyed mainly by pitch). A training method to improve tone perception will be developed with non-tone language non-CI through to tone language CI children drawing on experimental psychology methods, auditory and visual (lip & face) speech information, exaggerated tone cues, and metalinguistic instruction.Read moreRead less
Using written language to probe speech recognition models. Speech recognition models fall into two principal classes, with fundamentally different processing architectures. Feedback models (e.g. TRACE, McClelland & Elman, 1986) allow lexical knowledge to exert top-down control over phonemic analysis. Feedforward models (e.g. Merge, Norris, McQueen & Cutler, 2000) assume that information flow is entirely bottom-up. Our project adopts an innovative approach to testing between these model classe ....Using written language to probe speech recognition models. Speech recognition models fall into two principal classes, with fundamentally different processing architectures. Feedback models (e.g. TRACE, McClelland & Elman, 1986) allow lexical knowledge to exert top-down control over phonemic analysis. Feedforward models (e.g. Merge, Norris, McQueen & Cutler, 2000) assume that information flow is entirely bottom-up. Our project adopts an innovative approach to testing between these model classes, by examining the influence of written-word knowledge on speech perception. To distinguish the models, contrasts must test different processing levels and examine strategy effects. TRACE favors broad effects with limited strategic influence; Merge favors lexical effects that are necessarily sensitive to strategic factorsRead moreRead less
Reconciling perceptual and cognitive accounts of dyslexia: The neural rate deficit hypothesis. The proposed research will form part of a co-ordinated program to understand the causes of dyslexia, a disorder that affects a large number of children and often persists into adulthood. It complements parallel efforts to elucidate the genetic basis of dyslexia, the heterogeneity and subtypes of dyslexia, and the developmental precursors to the disorder. This research will inform early intervention and ....Reconciling perceptual and cognitive accounts of dyslexia: The neural rate deficit hypothesis. The proposed research will form part of a co-ordinated program to understand the causes of dyslexia, a disorder that affects a large number of children and often persists into adulthood. It complements parallel efforts to elucidate the genetic basis of dyslexia, the heterogeneity and subtypes of dyslexia, and the developmental precursors to the disorder. This research will inform early intervention and remediation efforts and will also assist in the understanding of the normal process of reading acquisition in children.Read moreRead less
Interlimb coordination dynamics in stroke. Everyday we use our limbs in a coordinated manner. However, for a person who has suffered a stroke resulting in weakness on one side of the body even the simplest interlimb coordination tasks are difficult to perform. This project will examine interlimb coordination in persons who have suffered a stroke and explore whether the coupling between limbs can be exploited to promote fuctional recovery of an impaired limb. In particular, the research seeks to ....Interlimb coordination dynamics in stroke. Everyday we use our limbs in a coordinated manner. However, for a person who has suffered a stroke resulting in weakness on one side of the body even the simplest interlimb coordination tasks are difficult to perform. This project will examine interlimb coordination in persons who have suffered a stroke and explore whether the coupling between limbs can be exploited to promote fuctional recovery of an impaired limb. In particular, the research seeks to identify the critical components underlying the effectiveness of an intervention involving the pratice of actions bilaterally and simultaneously.Read moreRead less
Lexical expertise and reading skill: An experimental analysis of individual differences in written language proficiency. The Federal Government's current National Inquiry into the Teaching of Literacy highlights the importance of an evidence-based approach to teaching and assessing literacy. Considerable research and policy effort has been directed towards early reading programs. Much less attention has been paid to evaluating children's later development of reading comprehension and spelling pr ....Lexical expertise and reading skill: An experimental analysis of individual differences in written language proficiency. The Federal Government's current National Inquiry into the Teaching of Literacy highlights the importance of an evidence-based approach to teaching and assessing literacy. Considerable research and policy effort has been directed towards early reading programs. Much less attention has been paid to evaluating children's later development of reading comprehension and spelling proficiency, but there is wide diversity in these skills within the adult population that influence educational and vocational opportunity. This investigation of the factors underlying expertise in reading and spelling will provide evidence that can contribute to developing educational policy and curricula for the later stages of schooling.Read moreRead less
The ingredients of conscious identification. Research from a variety of psychological domains indicates that a lot of mental processing goes on unconsciously, but that we are only generally aware of a small fraction of the information delivered by our senses. This research will provide new insights into the cognitive and neural mechanisms underlying our conscious and unconscious identification of visual stimuli and will lead to a better understanding of the limitations we are likely to experienc ....The ingredients of conscious identification. Research from a variety of psychological domains indicates that a lot of mental processing goes on unconsciously, but that we are only generally aware of a small fraction of the information delivered by our senses. This research will provide new insights into the cognitive and neural mechanisms underlying our conscious and unconscious identification of visual stimuli and will lead to a better understanding of the limitations we are likely to experience under conditions which make different demands on our perception, attention and the need to remember the relevant information. The results will also inform assessment and remediation of neurological conditions such as stroke and dementia.Read moreRead less
The Ins and Outs of the Central Bottleneck. Humans display severe capacity limitations at multiple levels of information processing. When considering, with modern technological advances, the amount of multitasking one is called upon to do in every day life (e.g., talking on a hands-free mobile phone device and driving) it is vital to understand what stages of information processing interfere with one another. The present work will extend our knowledge regarding which cognitive operations can be ....The Ins and Outs of the Central Bottleneck. Humans display severe capacity limitations at multiple levels of information processing. When considering, with modern technological advances, the amount of multitasking one is called upon to do in every day life (e.g., talking on a hands-free mobile phone device and driving) it is vital to understand what stages of information processing interfere with one another. The present work will extend our knowledge regarding which cognitive operations can be performed concurrently without impairment. In addition, it will help us better understand processing limitations that have been linked to a variety of clinical groups such as those suffering from schizophrenia and mood disorders.Read moreRead less
Seeing the forest and the trees: Cognitive and neural mechanisms underlying recognition of individual objects and sets. When confronted with a set of similar objects, such as a crowd of faces or a flow of oncoming cars, human observers can rapidly and seemingly automatically extract summary statistics of these sets of objects (e.g., mean expression or location). This research will provide insights into how the human visual system executes this massive feat of computation. This represents a vital ....Seeing the forest and the trees: Cognitive and neural mechanisms underlying recognition of individual objects and sets. When confronted with a set of similar objects, such as a crowd of faces or a flow of oncoming cars, human observers can rapidly and seemingly automatically extract summary statistics of these sets of objects (e.g., mean expression or location). This research will provide insights into how the human visual system executes this massive feat of computation. This represents a vital step in understanding vision in general and in eventually applying our knowledge to the development of artificial vision systems and to rehabilitation of visual disorders. The research will also investigate the effects of attentional load on perception of summary statistics of the environment, which is critical for tasks such as driving in busy traffic.Read moreRead less
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
Communication outcomes of preterm children: prevalence, description and intervention. Premature birth places children at risk of major disability, yet the majority of children are considered neurologically normal and disability free. However in follow-up studies at school age, preterm children are found to have lower verbal and nonverbal abilities that affects their academic and social development. Preterm children are six times more likely to require special educational support. This investigat ....Communication outcomes of preterm children: prevalence, description and intervention. Premature birth places children at risk of major disability, yet the majority of children are considered neurologically normal and disability free. However in follow-up studies at school age, preterm children are found to have lower verbal and nonverbal abilities that affects their academic and social development. Preterm children are six times more likely to require special educational support. This investigation will examine the communication skills, cognitive processes and academic progress of children born preterm. The findings will provide an evidence base for decisions about monitoring and intervention of preterm infants at greater risk for poorer speech-language and academic outcomes.Read moreRead less