Hunger flexibly modifies hypothalamic neural circuits responding to threat. Animal and human behaviour frequently involves a choice between actions or goals with conflicting positive and negative outcomes. However, the appropriate action or goal in conflicting situations often depends on physiological pressures like hunger, stress and mating opportunities. For example, the need for resources within an environment, such as food, drives approach behaviour, whereas threats to survival, such as pred ....Hunger flexibly modifies hypothalamic neural circuits responding to threat. Animal and human behaviour frequently involves a choice between actions or goals with conflicting positive and negative outcomes. However, the appropriate action or goal in conflicting situations often depends on physiological pressures like hunger, stress and mating opportunities. For example, the need for resources within an environment, such as food, drives approach behaviour, whereas threats to survival, such as predator cues, enhance avoidance behaviour. This project will uncover the neural circuitry and endocrine mechanisms through which hunger influences hypothalamic threat-detecting circuits that suppress food intake. These studies provide a new hypothalamic model to understand risk/reward decision in the brain.Read moreRead less
Mental imagery and visual working memory. Remembering information “in mind” is severely limited by restrictions in capacity, duration and precision. The limits on capacity and precision in visual working memory remain unclear. Likewise, the search for the neural correlates of visual working memory has produced conflicting results. This proposal will show that the limits in precision, capacity and the neural correlates of visual working memory are driven by visual mental imagery. By showing that ....Mental imagery and visual working memory. Remembering information “in mind” is severely limited by restrictions in capacity, duration and precision. The limits on capacity and precision in visual working memory remain unclear. Likewise, the search for the neural correlates of visual working memory has produced conflicting results. This proposal will show that the limits in precision, capacity and the neural correlates of visual working memory are driven by visual mental imagery. By showing that mental imagery is the missing link to a comprehensive understanding of working memory, This project will show that mental imagery strength limits how much visual information can be held "in mind”. This work will unify two heated scientific debates and produce a complete map of working memory.Read moreRead less
Poor social functioning in schizophrenia: understanding its causes and developing better treatments. This project will advance knowledge of the thinking processes and the associated neural changes that cause the lifelong social disability which characterises schizophrenia. Findings will, in turn, contribute to better identifying young people, at risk of developing schizophrenia, and inform the design of new interventions and treatments.
Moral reasoning and mental illness: towards a model of moral judgment and moral accountability. This research examines capacities for moral judgment in people with schizophrenia, some of whom act on their delusional beliefs and commit crimes. Findings will, in turn, inform legal and philosophical consideration of the moral accountability of mentally ill defendants, and advance theoretical knowledge of healthy moral decision making.
Discovery Early Career Researcher Award - Grant ID: DE140101588
Funder
Australian Research Council
Funding Amount
$392,459.00
Summary
Do physical activity and electronic screen behaviours influence cognitive and psychosocial development in preschool children? Levels of physical inactivity and screen-based entertainment are alarmingly high among preschool children, yet little is known about the independent effects of these behaviours on cognitive and psychosocial development during early childhood. This project will investigate the associations between physical activity and screen-based entertainment and cognitive and psychosoc ....Do physical activity and electronic screen behaviours influence cognitive and psychosocial development in preschool children? Levels of physical inactivity and screen-based entertainment are alarmingly high among preschool children, yet little is known about the independent effects of these behaviours on cognitive and psychosocial development during early childhood. This project will investigate the associations between physical activity and screen-based entertainment and cognitive and psychosocial development in preschool children. The findings will identify how much and which types of these behaviours influence developmental outcomes in young children. This knowledge will benefit parents, educators, health professionals and governments to develop and implement evidence-based strategies and policies to give young children the best start in life.Read moreRead less
Uncertainty and response control in the prefrontal cortex. This project will identify how complex behaviours come to be performed habitually. It is proposed that statistical certainty in the learning environment is a key determinant of automatic behaviour, that detection of uncertainty can restore voluntary control of behaviour and that this is an important function of the prefrontal cortex of the brain.
Memory consolidation - Integrating cognitive science and neuroscience approaches to how we remember and how we forget. How can we forget what happened yesterday, but vividly remember our first kiss? Neuroscientists think the brain has a special mechanism to strengthen memories with time, but many psychologists disagree. The project aims to bring the brain and the mind closer together, using the cutting-edge combination of brain imaging and psychological modelling.
Discovery Early Career Researcher Award - Grant ID: DE150101921
Funder
Australian Research Council
Funding Amount
$357,000.00
Summary
Effects of reducing sitting on toddlers’ executive functions: Cluster RCT. The levels of sedentary behaviour are now alarmingly high in toddlers, yet little is known about the effect of this behaviour on cognitive development and executive functions during early childhood. This 15 month cluster randomised controlled trial will examine the effects of reduced sitting time on cognitive development and executive functions in Australian toddlers from low socio-economic families. This project aims to ....Effects of reducing sitting on toddlers’ executive functions: Cluster RCT. The levels of sedentary behaviour are now alarmingly high in toddlers, yet little is known about the effect of this behaviour on cognitive development and executive functions during early childhood. This 15 month cluster randomised controlled trial will examine the effects of reduced sitting time on cognitive development and executive functions in Australian toddlers from low socio-economic families. This project aims to develop and implement evidence-based strategies and policies designed to optimise developmental and health outcomes in young children, specifically in those from a low socio-economic status, thus giving young children the best start in life.Read moreRead less
The NSW child development study. Research shows that a child's development predicts health and social outcomes later in life. This Australian project will be the first to identify risk and protective factors associated with these outcomes in 87,000 children from birth to 10 years. The results will help inform governments to improve our children's health and educational achievements.
The impact of motherhood on fear extinction in rats. This project aims to identify how motherhood, a time of significant hormonal flux, alters the mechanisms underlying fear regulation in female rats. Current theories of fear regulation are limited because they have been derived from studies that have focused on males but recent work suggests that sex hormones influence fear regulation. The expected outcomes of this project will help to develop a more ecologically valid model of fear regulation ....The impact of motherhood on fear extinction in rats. This project aims to identify how motherhood, a time of significant hormonal flux, alters the mechanisms underlying fear regulation in female rats. Current theories of fear regulation are limited because they have been derived from studies that have focused on males but recent work suggests that sex hormones influence fear regulation. The expected outcomes of this project will help to develop a more ecologically valid model of fear regulation that accounts for fluctuations in female sex hormones and reproductive experience. This should provide unique insights into fear reduction and protection against anxiety.Read moreRead less