Risky choices: From cells and circuits to computations and behaviour. This project aims to ask and answer fundamental questions about how we safely make risky decisions to guide our behaviour. It combines theoretically driven approaches from experimental psychology with state-of-the-art technology for mapping and manipulating brain function. The project expects to show, with unprecedented behavioural, brain cell type, and circuit precision, how we safely make choices, how these choices are shape ....Risky choices: From cells and circuits to computations and behaviour. This project aims to ask and answer fundamental questions about how we safely make risky decisions to guide our behaviour. It combines theoretically driven approaches from experimental psychology with state-of-the-art technology for mapping and manipulating brain function. The project expects to show, with unprecedented behavioural, brain cell type, and circuit precision, how we safely make choices, how these choices are shaped by experience, and how controlling these cells and circuits controls choice. This outcome should provide significant benefits including a new knowledge base bridging behavioural, cognitive, and neural sciences to advance theories of behaviour and laying a new basic science platform to understand impulsive behaviours.Read moreRead less
Social buffering of fear inhibition in adolescent rats. Adolescence is an important time when individuals learn to manage stress-related emotions like fear. Peers can help, or hinder, individuals to regulate fear. This project aims to understand how, when, and for whom social buffering of fear regulation occurs during adolescence. It uses a behavioural, pharmacological, and neural approach to explore these issues. The project aims to close the gap in understanding of how social companions affect ....Social buffering of fear inhibition in adolescent rats. Adolescence is an important time when individuals learn to manage stress-related emotions like fear. Peers can help, or hinder, individuals to regulate fear. This project aims to understand how, when, and for whom social buffering of fear regulation occurs during adolescence. It uses a behavioural, pharmacological, and neural approach to explore these issues. The project aims to close the gap in understanding of how social companions affect basic learning and memory processes in an understudied population of adolescents. The expected outcomes of this project include a richer knowledge of how peers shape emotional regulation during development, which will ultimately inform social-based approaches for improving emotion regulation in youth.
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How the brain learns and uses inhibitory predictions. Humans and other animals readily learn about cues and actions that predict the absence of important events. Yet, how and where such inhibitory predictions are processed in the mammalian brain remains unclear. This project aims to demonstrate that inhibitory predictions are generally encoded and retrieved in the medial prefrontal cortex, without any detailed information about the absent events. It combines a unique behavioural approach with th ....How the brain learns and uses inhibitory predictions. Humans and other animals readily learn about cues and actions that predict the absence of important events. Yet, how and where such inhibitory predictions are processed in the mammalian brain remains unclear. This project aims to demonstrate that inhibitory predictions are generally encoded and retrieved in the medial prefrontal cortex, without any detailed information about the absent events. It combines a unique behavioural approach with the latest tools for manipulation of brain activity in behaving rodents. The project expects to generate new insights into how the mammalian brain extracts inhibitory predictions from the environment to guide our behaviours and decisions in the most optimal way.Read moreRead less
What is the role of striatal dopamine in value-based decision-making? The aim of this project is to understand the role of dopamine in the brain circuits controlling goal-directed action. Its significance lies in our use of newly developed tools to measure dopamine release and cellular activity concurrently to assess the causal role of this interaction in choice and decision-making. The expected outcome of this project is to provide a comprehensive understanding of the role of dopamine release i ....What is the role of striatal dopamine in value-based decision-making? The aim of this project is to understand the role of dopamine in the brain circuits controlling goal-directed action. Its significance lies in our use of newly developed tools to measure dopamine release and cellular activity concurrently to assess the causal role of this interaction in choice and decision-making. The expected outcome of this project is to provide a comprehensive understanding of the role of dopamine release in striatal cellular activity and in the psychological processes mediating goal-directed decision-making. This outcome will have the benefit of filling a gap in our knowledge of the brain processes mediating decision-making, a fundamental capacity that contributes to our physical and psychological wellbeing (wellness). Read moreRead less
Neural circuit control of effort under stress . This Project aims to investigate how the ‘decision’ to persist in exerting effort to obtain a reward is encoded in the the brain and affected by stress. This work will generate new knowledge on the neural mechanisms through which stress modifies neural activity to control decision making processes underpinning adaptive behaviours essential for survival. The expected outcomes of this work include enhanced capacity at the interface of behavioural a ....Neural circuit control of effort under stress . This Project aims to investigate how the ‘decision’ to persist in exerting effort to obtain a reward is encoded in the the brain and affected by stress. This work will generate new knowledge on the neural mechanisms through which stress modifies neural activity to control decision making processes underpinning adaptive behaviours essential for survival. The expected outcomes of this work include enhanced capacity at the interface of behavioural and computational neuroscience, that will in turn provide significant benefits through greater insight into brain functions essential for survival, with long ranging implications for performance optimisation and brain-inspired computing. Read moreRead less
Midbrain hunger signalling modifies decision making under conflict. Decision-making is one of the most important and fundamental biological processes executed by the mammalian brain. Environmental threats and physiological pressures, such as hunger, can influence decision-making processes skewing the risk/reward ratio, yet how the brain integrates these conflicting goals to determine action selection is unknown. This project aims to investigate brain chemistry and circuitry controlling decision ....Midbrain hunger signalling modifies decision making under conflict. Decision-making is one of the most important and fundamental biological processes executed by the mammalian brain. Environmental threats and physiological pressures, such as hunger, can influence decision-making processes skewing the risk/reward ratio, yet how the brain integrates these conflicting goals to determine action selection is unknown. This project aims to investigate brain chemistry and circuitry controlling decision making under conflict using a multidisciplinary approach combining behaviour, pharmacogenetics, and sophisticated molecular and functional profiling. The expected outcomes will advance theories regarding the neural organisation and computation of decision making under conflict.Read moreRead less
A new perspective on how we learn motor skills: two adaptation classes? The capacity to adapt and acquire movement skills is essential for success in almost every aspect of our lives. This project will test the idea that there are two fundamentally distinct classes of motor learning processes in the brain that are driven by different error types. Using brain recordings, robotic perturbation of movement, and novel variations of classical learning paradigms, the project aims to reveal the neurocom ....A new perspective on how we learn motor skills: two adaptation classes? The capacity to adapt and acquire movement skills is essential for success in almost every aspect of our lives. This project will test the idea that there are two fundamentally distinct classes of motor learning processes in the brain that are driven by different error types. Using brain recordings, robotic perturbation of movement, and novel variations of classical learning paradigms, the project aims to reveal the neurocomputational properties of these proposed adaptation classes across a range of sensorimotor learning paradigms. The knowledge gained from this project may identify new strategies for adapting movements that are widely applicable to industry, defence, sport, and health.Read moreRead less
Evaluating the Network Neuroscience of Human Cognition to Improve AI. This project will translate the brain’s inherent complexity into a set of explorable networks that will test the network theory of intelligence, and also be used to drive advances in next generation artificial neural networks. Our approach will catalyse new knowledge regarding how the complexity of the brain gives rise to cognition using innovative analyses inspired by physics and engineering. This fresh perspective on cogniti ....Evaluating the Network Neuroscience of Human Cognition to Improve AI. This project will translate the brain’s inherent complexity into a set of explorable networks that will test the network theory of intelligence, and also be used to drive advances in next generation artificial neural networks. Our approach will catalyse new knowledge regarding how the complexity of the brain gives rise to cognition using innovative analyses inspired by physics and engineering. This fresh perspective on cognition will accelerate understanding of normal cognitive function and also advance the development of advances in artificial neural network performance. Expected outcomes include methods to describe the computational signature of how cognition emerges from dynamic brain network activity and novel AI algorithms. Read moreRead less
Subcortical control of human reaching? This project will test a radical new hypothesis about how the human brain generates visually guided behaviour. Conventional thinking assumes that visuomotor control of limb movements occurs exclusively within the cerebral cortex. However, the project team’s recent observations of extremely rapid visually guided muscle activity strongly imply that the human brain controls reaching movements via more primitive midbrain and brainstem structures. The project’s ....Subcortical control of human reaching? This project will test a radical new hypothesis about how the human brain generates visually guided behaviour. Conventional thinking assumes that visuomotor control of limb movements occurs exclusively within the cerebral cortex. However, the project team’s recent observations of extremely rapid visually guided muscle activity strongly imply that the human brain controls reaching movements via more primitive midbrain and brainstem structures. The project’s hypotheses challenge long-standing ideas about the functional organisation of the human brain and may have wide-ranging implications for the design of human-machine interfaces as well as training protocols in rehabilitation, industry, and sport.Read moreRead less
The impact of circadian and sleep factors on neurodevelopment. This project aims to longitudinally examine the contributions of multiple circadian and sleep factors on the development of the teen brain. Adolescence is associated with a change in the internal body clock, leading to later bed and wake times and loss of sleep. It is also a time when the teenage brain is rapidly maturing to support learning. Despite the known importance of sleep in adolescence we know little about how the circadian ....The impact of circadian and sleep factors on neurodevelopment. This project aims to longitudinally examine the contributions of multiple circadian and sleep factors on the development of the teen brain. Adolescence is associated with a change in the internal body clock, leading to later bed and wake times and loss of sleep. It is also a time when the teenage brain is rapidly maturing to support learning. Despite the known importance of sleep in adolescence we know little about how the circadian clock and sleep impacts the developing brain. Our project expects to advance understanding of the importance of sleep and circadian timing for healthy brain and cognitive development. This knowledge will inform policy and prevention/intervention programs to benefit individuals, parents and the community.Read moreRead less