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
Generalised quantum models of complexity with application to cognitive systems. Non-separable systems surround us. Our transportation, taxation, schooling, environmental and social policies are all interrelated, and it is increasingly recognised that we cannot consider them in isolation. Such systems are generally deemed complex, and it is often impossible to separate them from one another. Despite this, many of our most advanced modelling techniques are grounded in principles of separability a ....Generalised quantum models of complexity with application to cognitive systems. Non-separable systems surround us. Our transportation, taxation, schooling, environmental and social policies are all interrelated, and it is increasingly recognised that we cannot consider them in isolation. Such systems are generally deemed complex, and it is often impossible to separate them from one another. Despite this, many of our most advanced modelling techniques are grounded in principles of separability and non-contextuality. This project will develop a new set of models of non-separable systems and complexity that will in turn lead to new frontier technologies and theories.Read moreRead less
The many faces of threat: An investigation of animal, interpersonal and intergroup threat. Threat to personal safety can take a number of guises, a snake in the grass, an angry neighbour or, increasingly often in our modern world, a stranger who looks different. The present project will investigate the manner in which we respond to these threats, whether these responses can be modulated and what determines the threatening nature of an event. A better understanding of how we react to real or p ....The many faces of threat: An investigation of animal, interpersonal and intergroup threat. Threat to personal safety can take a number of guises, a snake in the grass, an angry neighbour or, increasingly often in our modern world, a stranger who looks different. The present project will investigate the manner in which we respond to these threats, whether these responses can be modulated and what determines the threatening nature of an event. A better understanding of how we react to real or perceived threats, in particular those involving other humans, will aid our understanding of human behaviour in an ever faster changing environment, both in our region and more broadly. Read moreRead less
How does dopamine modulate adult new word learning? Stroke is a chronic disease of increasing prevalence with increasing age. There is a critical need to develop more effective treatments of communication disorders in this population. One way of achieving this is to combine certain drugs with language therapy. Through studying how these drugs influence language, this research will provide vital knowledge for developing effective forms of pharmacotherapy for adults with language disorders after b ....How does dopamine modulate adult new word learning? Stroke is a chronic disease of increasing prevalence with increasing age. There is a critical need to develop more effective treatments of communication disorders in this population. One way of achieving this is to combine certain drugs with language therapy. Through studying how these drugs influence language, this research will provide vital knowledge for developing effective forms of pharmacotherapy for adults with language disorders after brain injury. More effective language rehabilitation can have direct positive consequences on the ability to regain and maintain employment and social relationships after stroke or brain injury and will address the large and growing social and economic cost to the nation.Read moreRead less
Human learning of likes and dislikes: A test of the dual process account and an investigation of its neural substrates. Dual process accounts of human affective learning hold that affective learning, the learning of likes and dislikes, and relational learning, the learning of predictive relationships, reflect separate learning mechanisms. Affective learning, for instance, is said not to extinguish, a claim that has far reaching consequences for the design of behaviourally based treatments of a ....Human learning of likes and dislikes: A test of the dual process account and an investigation of its neural substrates. Dual process accounts of human affective learning hold that affective learning, the learning of likes and dislikes, and relational learning, the learning of predictive relationships, reflect separate learning mechanisms. Affective learning, for instance, is said not to extinguish, a claim that has far reaching consequences for the design of behaviourally based treatments of anxiety. The project will test this and other predictions of dual process accounts. Moreover, it will extent the experimental analysis of affective learning to the acquisition of likes and identify the cortical bases for aversive, appetitive, and relational learning using event related functional magnetic resonance imaging.Read moreRead less
A functional imaging study of semantic processing modulated by dopamine. The role of dopamine in language processing is largely unknown, despite emerging evidence that dopaminergic alterations can modulate language in schizophrenia, Parkinson's disease, and healthy individuals. The research aims to reveal the neural and behavioural correlates of dopaminergic modulation of semantic processing using neuroimaging in healthy individuals who have ingested levodopa. It is hypothesised that levodopa wi ....A functional imaging study of semantic processing modulated by dopamine. The role of dopamine in language processing is largely unknown, despite emerging evidence that dopaminergic alterations can modulate language in schizophrenia, Parkinson's disease, and healthy individuals. The research aims to reveal the neural and behavioural correlates of dopaminergic modulation of semantic processing using neuroimaging in healthy individuals who have ingested levodopa. It is hypothesised that levodopa will modulate brain activity under circumstances where there is heightened semantic competition, consistent with a contemporary theory of dopaminergic cognitive control. The expected outcome of the research is an increased understanding of the interactions between dopamine, the language faculty, and associated neural systems.Read moreRead less
'As-if thinking': an experimental analysis of human reasoning and decision-making. The failure to respond adequately to the havoc wreaked by Hurricane Katrina in 2005 highlighted the difficulty of sequential decision-making. Responses to such emergencies require detailed contingency plans, necessitating a consideration of all possible outcomes of a situation regardless of their objective probability. This project takes an innovative approach to the experimental analysis of human reasoning and de ....'As-if thinking': an experimental analysis of human reasoning and decision-making. The failure to respond adequately to the havoc wreaked by Hurricane Katrina in 2005 highlighted the difficulty of sequential decision-making. Responses to such emergencies require detailed contingency plans, necessitating a consideration of all possible outcomes of a situation regardless of their objective probability. This project takes an innovative approach to the experimental analysis of human reasoning and decision-making, with the aim of identifying the mechanisms, factors, and boundary conditions affecting inferences and decisions about uncertain alternatives. The research will inform planning for Australia's readiness to respond to unpredictable events with uncertain outcomes and enhance the reputation of Australian science.Read moreRead less
Smells that 'taste': Flavour perception and its consequences. The experience of flavour during eating and drinking has surprising social and economic ramifications. Our preference for sweet and fatty food has contributed to progressive increases in body mass over the last twenty years. Many experts now consider this to be a major public health crisis in the making. Economically, Australia is heavily dependent upon food exports, both in terms of primary production and value added processed food ....Smells that 'taste': Flavour perception and its consequences. The experience of flavour during eating and drinking has surprising social and economic ramifications. Our preference for sweet and fatty food has contributed to progressive increases in body mass over the last twenty years. Many experts now consider this to be a major public health crisis in the making. Economically, Australia is heavily dependent upon food exports, both in terms of primary production and value added processed food. Understanding the psychology of flavour, which is central to this project, should assist the development of non-fattening additives that appreciably alter fat and sweetness perception, creating new food products that are healthy, preferred and potential export earners. Read moreRead less
Ageing and self-regulation. Australia is faced with an ageing population, and thus an increasingly important national goal is ageing well and ageing productively. Our preliminary research suggests that self-regulation may be a significant problem for older Australians. The proposed research will provide a clearer picture of when and why older adults have difficulties regulating their behaviour, and which older adults are particularly susceptible to lapses in self-control. If older adults do hav ....Ageing and self-regulation. Australia is faced with an ageing population, and thus an increasingly important national goal is ageing well and ageing productively. Our preliminary research suggests that self-regulation may be a significant problem for older Australians. The proposed research will provide a clearer picture of when and why older adults have difficulties regulating their behaviour, and which older adults are particularly susceptible to lapses in self-control. If older adults do have difficulties self-regulating, and if these self-regulation failures incur health, financial and social costs, by gaining a clearer understanding of this problem, the proposed research will take an important step in improving the lives of older Australians. Read moreRead less
Knowing in advance: Effective strategies for preparing young children for novel experiences. To optimise cognitive and emotional development, it is critical to identify the influences on children's lives. How parent-child conversations about the past shape development is well understood, but scant research has examined how adult-child preparatory discussions influence children's experience and memory of future events. Our research addresses this gap. It has important implications in medical, edu ....Knowing in advance: Effective strategies for preparing young children for novel experiences. To optimise cognitive and emotional development, it is critical to identify the influences on children's lives. How parent-child conversations about the past shape development is well understood, but scant research has examined how adult-child preparatory discussions influence children's experience and memory of future events. Our research addresses this gap. It has important implications in medical, educational, and other contexts in which it is vital to ensure that information given in advance increases children's understanding of an experience. More generally, in specifying optimal parent-child interactions, the findings are also relevant to interventions aiming to enhance psychological and emotional resilience in the early years. Read moreRead less