The aim of this research project is to provide critical new information on the functional changes in brain circuits mediating cognitive-emotional integration during decision-making. This project will use a powerful and unique combination of behavioural, circuit-level, cellular, genetic and imagining tools to assess decision processes in healthy rodent and human subjects, and in animal models of, and humans suffering from, specific psychiatric disorders.
A Brain-based Model Of Anxiety Sensitivity In Panic Disorder
Funder
National Health and Medical Research Council
Funding Amount
$402,214.00
Summary
This project will combine advanced brain imaging and brain network modelling to better understand the neurobiology of panic disorder with relevance to its treatment.
THE NEUROBIOLOGICAL BASIS OF INDIVIDUAL DIFFERENCES IN SUSCEPTIBILITY TO THE CONSEQUENCES OF STRESS
Funder
National Health and Medical Research Council
Funding Amount
$583,875.00
Summary
Stress plays a major role in the development and progression of many different mental health disorders. However, as we all know, the effects of stress on one person can be very different from its effects upon another. This is at least partly explained by differences in individual coping styles. When faced with a stressful situation without a ready solution, people tend to divide into two broad camps: those with an innate tendency to adopt passive coping strategies, such as avoidance, and those t ....Stress plays a major role in the development and progression of many different mental health disorders. However, as we all know, the effects of stress on one person can be very different from its effects upon another. This is at least partly explained by differences in individual coping styles. When faced with a stressful situation without a ready solution, people tend to divide into two broad camps: those with an innate tendency to adopt passive coping strategies, such as avoidance, and those that tend towards active coping strategies, such as attempting to take control of the situation. Previous studies have provided findings that suggest that passive coping is more common amongst sufferers of depression, post-traumatic stress disorder, and chronic pain syndrome than is active coping. But is this cause, or effect? And what are the intervening brain mechanisms? We attempt to address such questions in the present project using an animal model in which social conflict has been shown to trigger depression-like symptoms. In particular we wish to: (i) determine whether the patterns of brain activity triggered by social conflict are different for active vs. passive copers; (ii) determine whether the depression-like consequences of social conflict are more severe in passive than in active copers; (iii) determine whether differences in coping style and vulnerability to social conflict stress are due to the actions of a particular neurotransmitter, dopamine, in the prefrontal cortex of the brain; (iv) determine whether the actions of antidepressants might be attributable changes in prefrontal cortex dopamine function which in turn promote active coping in preference to passive coping. These studies will provide exciting new information about the neurobiological basis of individual differences in vulnerability to the harmful effects of stress, and thus will offer the hope of developing new ways of preventing devastating illnesses such as depression.Read moreRead less
Fibromyalgia: Investigating The Prefrontal Cortex And Its Role In Novel Treatment Approaches
Funder
National Health and Medical Research Council
Funding Amount
$338,110.00
Summary
Fibromyalgia, a chronic pain condition, is experienced by 1-3% of Australians. Despite this high number, the cause of fibromyalgia is still unknown with no effective treatment options. In the proposed investigations I will use state of the art neuroscientific paradigms to explore the brain basis of fibromyalgia and utilise novel brain stimulation protocols to provide long-lasting pain relief.
Visuomotor Integration In The Medial Parietal Cortical Areas
Funder
National Health and Medical Research Council
Funding Amount
$665,163.00
Summary
This project will find out how the electrical activity of brain cells is used to direct the arms to a specific position in the space around a person's body. By understanding the code used by brain cells to perform this control of the arms, we will be able to "read" the brain activity directly, and use it to allow control of artificial arms by people who have been paralysed or had amputations.
Neuronal Linking Of Attention, Perception And Action
Funder
National Health and Medical Research Council
Funding Amount
$586,469.00
Summary
We are able to perceive and interact with the environment around us primarily because a filter of attention selects just the objects or features of relevance in the world and helps to make appropriate motor responses. This project will study how attentional networks of the brain operate to link our perception and action. An understanding of this process is fundamental to revealing the underlying pathology in many neurological conditions where attention is impaired.
Understanding Cortical Circuitry Underlying Sensory Integration And The Consequence Of Its Developmental Disruption
Funder
National Health and Medical Research Council
Funding Amount
$527,395.00
Summary
The mammalian neocortex is organised into six layers with a systematic pattern of wiring that relies on normal development and balanced activity of neurons. This project combines developmental, electrophysiological, optogenetic behavioural, and computational methods to establish how the properties of the precise structure of cortical circuits impact their function and how disruptions in the balanced activity during development affect circuit formation and function in the mature brain.
Associate Professor Bourne’s research will involve learning how the infant brain has an enhanced capacity to repair its own neocortex following an injury and to translate these findings into the development of brain regenerative therapies.