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How satiation control reward value and cue-induced appetitive behaviours. This proposal aims to identify mechanisms that control environment-driven food-seeking behaviours. It seeks to do so by using modern virally-mediated and basic behavioural as well as histological techniques in a transgenic rat to characterise novel hindbrain circuits that control these feeding behaviours. This is significant as environment-driven overeating is problematic yet underlying mechanisms are unclear. This project ....How satiation control reward value and cue-induced appetitive behaviours. This proposal aims to identify mechanisms that control environment-driven food-seeking behaviours. It seeks to do so by using modern virally-mediated and basic behavioural as well as histological techniques in a transgenic rat to characterise novel hindbrain circuits that control these feeding behaviours. This is significant as environment-driven overeating is problematic yet underlying mechanisms are unclear. This project expects to provide new knowledge on when, where and how hindbrain neurons control environment-driven food-seeking behaviours. This should provide benefits to the advancement of knowledge on the neural mechanisms of food-seeking and provide a basic science platform for future research on the study of feeding behaviours.
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Discovery Early Career Researcher Award - Grant ID: DE190101244
Funder
Australian Research Council
Funding Amount
$342,411.00
Summary
Unravelling the relationship between food and the brain. This project aims to investigate how highly palatable foods that are high in fat and sugar, interact with the brain to cause their overconsumption. Highly palatable foods cause plasticity in brain reward circuitry in a manner similar to drugs of abuse. Identifying how these "junk" foods interact with reward areas of the brain will explore the neural mechanisms underlying the hedonic nature of appetite. This project will not only inform our ....Unravelling the relationship between food and the brain. This project aims to investigate how highly palatable foods that are high in fat and sugar, interact with the brain to cause their overconsumption. Highly palatable foods cause plasticity in brain reward circuitry in a manner similar to drugs of abuse. Identifying how these "junk" foods interact with reward areas of the brain will explore the neural mechanisms underlying the hedonic nature of appetite. This project will not only inform our understanding of how exposure to these foods can contribute to overeating and obesity, a huge and growing problem in Australia, but will also provide evidence to inform policy options relevant to advertising and marketing of these foods.Read moreRead less
The role of context in the acquisition, extinction and reinstatement of fear. Behavioural studies have identified a role for context in the development, extinction and reactivation of fear memories. Although there has been significant progress in delineating the neural pathways for fear conditioning, less is known about the substrates that represent the context of conditioning. This project studies the neural substrates of the processes by which context controls the acquisition, extinction and r ....The role of context in the acquisition, extinction and reinstatement of fear. Behavioural studies have identified a role for context in the development, extinction and reactivation of fear memories. Although there has been significant progress in delineating the neural pathways for fear conditioning, less is known about the substrates that represent the context of conditioning. This project studies the neural substrates of the processes by which context controls the acquisition, extinction and reactivation of fear memories. Specifically, it examines the role of information flow between the dorsal subiculum and the accumbens nucleus in the processes by which rats learn about environmental context and the control exerted by such contexts on fear memories.Read moreRead less
The Neural Bases of Decision-Making. The smooth integration of cognitive and emotional processes is necessary for everyday decisions. Dysfunction in this integrative capacity accompanies dementia, neurodegenerative conditions and major psychiatric disorders. This project seeks to understand the neural bases of this integration in normal decision-making using cutting edge behavioural, cellular, molecular and genetic tools to map the neural system, circuit and cellular processes controlling the se ....The Neural Bases of Decision-Making. The smooth integration of cognitive and emotional processes is necessary for everyday decisions. Dysfunction in this integrative capacity accompanies dementia, neurodegenerative conditions and major psychiatric disorders. This project seeks to understand the neural bases of this integration in normal decision-making using cutting edge behavioural, cellular, molecular and genetic tools to map the neural system, circuit and cellular processes controlling the selection, evaluation and choice of goal-directed actions. Such actions can, with continued practice, transition into relatively inflexible habits. Thus, this project aims to investigate the neural processes that mediate this transition and how actions and habits interact in normal decision-making.Read moreRead less
The ageing brain: plasticity and training. This project will investigate how the capacity of a person's brain for reorganisation (plasticity) influences cognitive and motor function and training benefits in older adults. The findings will support new training initiatives to promote brain health and well-being across the lifespan.
Long-term memory systems and the human brain. Impairment of memory is a ubiquitous feature of human brain disease. A better understanding of memory processing in the brain is key to the development of better tests for the detection and monitoring of disease progression as well as the application of improved methods of rehabilitation for patients with acquired brain injury. This project will provide the catalyst for the development of a National Memory Disorders Research Centre that would be the ....Long-term memory systems and the human brain. Impairment of memory is a ubiquitous feature of human brain disease. A better understanding of memory processing in the brain is key to the development of better tests for the detection and monitoring of disease progression as well as the application of improved methods of rehabilitation for patients with acquired brain injury. This project will provide the catalyst for the development of a National Memory Disorders Research Centre that would be the focus for multidisciplinary cognitive neuroscience research. The ultimate aim would be the translation of basic neuroscience into effective tools that will impact the health outcome of the ageing population.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140100588
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
Gene-environment interactions in the regulation of neuroplasticity and cognitive function . This project will study the effects of different housing conditions on neuroplasticity-related cognitive function by combining an innovative operant conditioning behavioural test (computerised touch-screen technology) and new molecular approaches. Potential gene-environment interactions will be revealed using genetically targeted mice which have never been assessed in that context (mutants with altered gl ....Gene-environment interactions in the regulation of neuroplasticity and cognitive function . This project will study the effects of different housing conditions on neuroplasticity-related cognitive function by combining an innovative operant conditioning behavioural test (computerised touch-screen technology) and new molecular approaches. Potential gene-environment interactions will be revealed using genetically targeted mice which have never been assessed in that context (mutants with altered glucocorticoid and serotonin signalling). This project will study whether specific stages of the neuroplasticity process are differentially modulated through gene-environment interactions, ultimately resulting in changes to behaviour and cognitive functions. This will lead to a better understanding of the potential approaches that could be used to improve cognitive function.Read moreRead less
How does electrical stimulation affect brain networks? This project aims to generate fundamental knowledge about links between neural mechanisms, electrical brain stimulation and brain function. The project aims to improve knowledge about transcranial direct current stimulation (tDCS) and its effects on complex human brain networks. Such knowledge is necessary to enhance the effectiveness of current stimulation protocols. Using the innovative and interdisciplinary approach, this project will pr ....How does electrical stimulation affect brain networks? This project aims to generate fundamental knowledge about links between neural mechanisms, electrical brain stimulation and brain function. The project aims to improve knowledge about transcranial direct current stimulation (tDCS) and its effects on complex human brain networks. Such knowledge is necessary to enhance the effectiveness of current stimulation protocols. Using the innovative and interdisciplinary approach, this project will provide significant benefits such as crucial mechanistic information about how tDCS modulates healthy brain function which has broad implications for research and clinical use of this technique.Read moreRead less
Are there common mechanisms for the inhibition of fear? Disorders of fear and anxiety affect up to 28% of Australians across their lives. This project studies how the brain inhibits fear and anxiety. It has four National Benefits. First, the knowledge generated by this project will contribute to coherent theoretical accounts of fear inhibition. Second, it will increase Australia's competitiveness and reputation in experimental psychology and behavioural neuroscience. Third, it will provide novel ....Are there common mechanisms for the inhibition of fear? Disorders of fear and anxiety affect up to 28% of Australians across their lives. This project studies how the brain inhibits fear and anxiety. It has four National Benefits. First, the knowledge generated by this project will contribute to coherent theoretical accounts of fear inhibition. Second, it will increase Australia's competitiveness and reputation in experimental psychology and behavioural neuroscience. Third, it will provide novel insights into ways of reducing anxiety and fear among sufferers of clinical anxiety disorders. Finally, it will provide internationally competitive training opportunities for Australian students.
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The development of the social brain in early childhood. This project aims to understand how the human brain develops social and emotional understanding. The brain has remarkable abilities for understanding our social environment, such as inferring other people’s thoughts and feelings. This project will use neuroscience techniques to investigate how brain networks combine to produce social understanding, how this changes throughout child development, and how it relates to complex social behaviour ....The development of the social brain in early childhood. This project aims to understand how the human brain develops social and emotional understanding. The brain has remarkable abilities for understanding our social environment, such as inferring other people’s thoughts and feelings. This project will use neuroscience techniques to investigate how brain networks combine to produce social understanding, how this changes throughout child development, and how it relates to complex social behaviours. This project’s findings could be used to develop educational programmes that enhance empathy and co-operation, strengthen family relationships, promote social inclusion and reduce maladaptive behaviours. It could also guide intervention in brain disorders that affect social understanding.Read moreRead less