Discovery Early Career Researcher Award - Grant ID: DE220101087
Funder
Australian Research Council
Funding Amount
$453,580.00
Summary
Impact of shift work on emergency performance, decision making and stress. Sleep and circadian disruptions due to shift work are common for emergency personnel, but their impact on team performance and decision making is poorly understood. Using an ecologically relevant simulated work environment, this project aims to examine how shift work influences work performance and team decision making and identify potential stress-related mechanisms that may underpin impairments in these outcomes. By und ....Impact of shift work on emergency performance, decision making and stress. Sleep and circadian disruptions due to shift work are common for emergency personnel, but their impact on team performance and decision making is poorly understood. Using an ecologically relevant simulated work environment, this project aims to examine how shift work influences work performance and team decision making and identify potential stress-related mechanisms that may underpin impairments in these outcomes. By understanding the role poor sleep and circadian misalignment due to shift work play on work performance, this project will inform industry practices and training approaches designed to optimise workplace safety and emergency performance. This project will benefit emergency personnel and the people who depend on these services.Read moreRead less
Hippocampal regulation of goal-directed decision-making. The hippocampus is a part of the brain that is central to learning and memory yet little is known about its role in decision-making. It is the aim of this application to provide the first detailed, causal evidence of hippocampal regulation of decision-making. This is significant because many mental health disorders and dementias that involve decision-making deficits are characterised by hippocampal dysfunction, but any direct link between ....Hippocampal regulation of goal-directed decision-making. The hippocampus is a part of the brain that is central to learning and memory yet little is known about its role in decision-making. It is the aim of this application to provide the first detailed, causal evidence of hippocampal regulation of decision-making. This is significant because many mental health disorders and dementias that involve decision-making deficits are characterised by hippocampal dysfunction, but any direct link between these factors is unknown. The outcomes of the current grant will provide the first evidence of that link, thus providing deeper understanding of the neurophysiological mechanisms of these disorders, which could eventuate in the creation of more beneficial treatments. Read moreRead less
A comprehensive framework for modelling the human connectome. The human brain is an extraordinarily complex network of interconnected cells. This project aims to use mathematical modelling and brain imaging to uncover key principles of network wiring in the human brain. Using an interdisciplinary approach that combines elements of neuroscience, genetics, physics, and psychology, the project will result in a new, rigorous framework for testing competing theories of brain development, the identifi ....A comprehensive framework for modelling the human connectome. The human brain is an extraordinarily complex network of interconnected cells. This project aims to use mathematical modelling and brain imaging to uncover key principles of network wiring in the human brain. Using an interdisciplinary approach that combines elements of neuroscience, genetics, physics, and psychology, the project will result in a new, rigorous framework for testing competing theories of brain development, the identification of key wiring principles for developing brains, and an understanding of how these principles shape behaviour. This work will shed new light on the developmental processes that underlie human behaviour and disease.Read moreRead less
Mapping cognitive impulsivity through online testing. The project aims to develop a new model of cognitive impulsivity and produce an online tool to measure it. Impulsivity is defined as the skill/s that exert control over impulsive behaviours. It is a trait of human cognition that affects health and productivity and that varies normatively across the healthy population. However, coherent models of cognitive impulsivity and comprehensive measures of the construct are lacking. The project aims to ....Mapping cognitive impulsivity through online testing. The project aims to develop a new model of cognitive impulsivity and produce an online tool to measure it. Impulsivity is defined as the skill/s that exert control over impulsive behaviours. It is a trait of human cognition that affects health and productivity and that varies normatively across the healthy population. However, coherent models of cognitive impulsivity and comprehensive measures of the construct are lacking. The project aims to unravel and measure the cognitive skills that can produce (or avoid) impulsive behaviour.Read moreRead less
Neuronal and behavioural correlates of sensory adaptation. Sensory systems adapt to the statistics of their environment, and the consequences of this adaptation are evident in neuronal activity and in animal’s behaviour. This project will employ a novel paradigm to characterise how adaptation changes the response properties of individual sensory neurons to improve efficiency of information transmission.
Extinction of conditioned responding: Learning from the evidence of absence. When animals or people learn that a cue, or their own action, is followed by something important, they respond in anticipation of the outcome or to control it. This project investigates how these learned responses can be reduced (“extinguished”) when the conditions that established them change. It will help solve 2 outstanding theoretical and practical problems: what makes some learned behaviours resistant to extinction ....Extinction of conditioned responding: Learning from the evidence of absence. When animals or people learn that a cue, or their own action, is followed by something important, they respond in anticipation of the outcome or to control it. This project investigates how these learned responses can be reduced (“extinguished”) when the conditions that established them change. It will help solve 2 outstanding theoretical and practical problems: what makes some learned behaviours resistant to extinction or prone to relapse after being extinguished? The project will identify the factors that are most directly responsible for resistance and relapse. This could pave the way to finding solutions for the major problems that bedevil therapies designed to treat human behavioural disorders, such as addictions, gambling, and anxietyRead moreRead less
Assessment of circadian and light interactions in adolescent sleepiness. This project aims to examine the relative contributions of multiple biological clock and sleep factors that may be linked to cognitive function and sleepiness in adolescents. Over 70 per cent of adolescents in Australia experience insufficient sleep. Cross-sectional studies have shown that insufficient sleep and mistimed sleep lead to reduced cognitive function. The project intends to identify specific sleep and circadian m ....Assessment of circadian and light interactions in adolescent sleepiness. This project aims to examine the relative contributions of multiple biological clock and sleep factors that may be linked to cognitive function and sleepiness in adolescents. Over 70 per cent of adolescents in Australia experience insufficient sleep. Cross-sectional studies have shown that insufficient sleep and mistimed sleep lead to reduced cognitive function. The project intends to identify specific sleep and circadian markers that are linked to academic performance, and generate innovative algorithms that predict these associations. The project will provide new knowledge to drive prevention and early intervention programs that use sleep-wake and light exposure information to improve sleep quality.Read moreRead less
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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The emotional face. The recognition of emotional facial expressions is essential for successful social functioning. This project will determine how information concerning facial expressions is encoded by the human brain, providing potential insight into situations where this process can fail, such as in old age or autism.
RCTs on Trial: How Placebo Effects Could Undermine Double-blind RCTs. Double-blind randomised placebo-controlled trials (RCTs) are considered the gold standard for establishing treatment efficacy. However, there are both theoretical and empirical reasons to believe that they do not adequately control for the placebo effect. Cost and ethical considerations prevent researchers conducting actual double-blind RCTs with patients from exploring these issues. To address this gap, this project uses nove ....RCTs on Trial: How Placebo Effects Could Undermine Double-blind RCTs. Double-blind randomised placebo-controlled trials (RCTs) are considered the gold standard for establishing treatment efficacy. However, there are both theoretical and empirical reasons to believe that they do not adequately control for the placebo effect. Cost and ethical considerations prevent researchers conducting actual double-blind RCTs with patients from exploring these issues. To address this gap, this project uses novel experimental models to systematically test key aspects of the double-blind RCT methodology that are intended to control for the placebo effect. The project aims to provide essential data on the validity of these trials, thereby improving Australia's health and ensuring that Government treatment subsidies are well spent.Read moreRead less