Selective Modulation Of Neural Network Activity Using Focal Brain Stimulation
Funder
National Health and Medical Research Council
Funding Amount
$531,496.00
Summary
Transcranial magnetic stimulation (TMS) has been touted as a viable treatment for a range of psychiatric and neurological disorders. However, the extent to which localised TMS influences widespread brain networks remains unknown. To fill this gap, we will combine neuroimaging and TMS in healthy adults. The project will provide a scientific foundation for the use of brain stimulation as an effective tool for improving function in a range of clinical conditions.
Patients with schizophrenia differ widely in their symptoms, long-term outcome and response to medication. However, most patients are treated with the same medications and interventions. This study aims to better facilitate the targeting of novel treatments to groups of patients (biotypes) that are likely to benefit most from a treatment. Groups of patients that share distinct patterns of deficits in brain connectivity will be delineated using state-of-the-art white matter imaging techniques.
Psychiatric disorders are associated with considerable social and economic burden which could be reduced if we understood mental health outcomes in high risk populations. This fellowship will use advanced brain imaging to understand the development of mental health disorders in those at high risk of bipolar disorder and dementia.
Underlying Mechanims Of Thalamocortical Dysrhythmia In Chronic Pain
Funder
National Health and Medical Research Council
Funding Amount
$393,817.00
Summary
Pain has a detrimental impact on ones quality of life and a significant financial impact on the community. It has recently been revealed that chronic pain is associated with altered electrical rhythms within the brain. Using human brain imaging, we aim to determine the underlying reason for this altered rhythm in humans with pain resulting from nervous system damage. Defining this mechanism will aid in the development of better treatment regimes.
Mental illness is the largest single cause of disability in Australia. While mental illness is increasingly recognised as a disorder of the brain, a patient’s diagnosis, treatment and prediction of course of outcome is seldom guided by the results of a biological test. My research aims to combine the power of modern brain imaging and cutting-edge bioinformatics to enable a biological approach to the problem of mental illness.
The Neurobiology Of Auditory Hallucinations: Characterisation Of Dysfunction Within A Neural Circuitry Model.
Funder
National Health and Medical Research Council
Funding Amount
$299,625.00
Summary
This is a highly innovative research proposal which is based on years of extensive research by our group. Auditory hallucinations are a prominent and potentially disabling symptom of psychosis, however it is extremely difficult to study them scientifically. Past research by our group (and other groups internationally) has indicated that an extensive network in the brain is activated whenever auditory hallucinations occur, but the source of this brain activity is unclear. It was thought that the ....This is a highly innovative research proposal which is based on years of extensive research by our group. Auditory hallucinations are a prominent and potentially disabling symptom of psychosis, however it is extremely difficult to study them scientifically. Past research by our group (and other groups internationally) has indicated that an extensive network in the brain is activated whenever auditory hallucinations occur, but the source of this brain activity is unclear. It was thought that the source may be the same brain circuits that are involved in generating inner speech or monitoring it, but our past research has ruled out these possibilities. Instead, our recent work suggests that auditory hallucinations may be associated with poorly functioning connections within central auditory processing circuits, specifically between left and right auditory association cortical regions. We conceptualise hallucinations as an abnormal and involuntary form of memory retrieval consequent to this dysfunction. Our study will pioneer methods of measuring connectivity in the brain circuits identified in our model, using a combination of functional magnetic resonance imaging (fMRI) and electroencephalographic (EEG) techniques in tandem with tests of central auditory processing. We believe that sufferers may benefit from understanding the physical processes which cause hallucinations. We also believe that a better understanding of hallucinations may lead to a better understanding of schizophrenia and the psychoses, which may in turn help in the development of better ways of treating these illnesses.Read moreRead less
Cortical Networks That Integrate Auditory Input And Speech Motor Output In Human Stutterers
Funder
National Health and Medical Research Council
Funding Amount
$292,639.00
Summary
Stuttering is a chronic communication disorder that arises from problems in the brain processes that control speech. This research aims to use magnetoencephalography, a new and extremely fast method of brain imaging, to study the parts of the human brain that underlie speech production. By studying the brains of both child and adult stutterers the causes of stuttering will become more apparent. Ultimately, this research will lead to more effective treatments for stuttering.
Imaging The Human Brain Connectome And Its Application To Psychiatric Disorders.
Funder
National Health and Medical Research Council
Funding Amount
$428,065.00
Summary
The human brain has long been conceptualized as a complex neural network. The connections of this network are yet to be characterized in full detail. Only recent technological advances in imaging have made possible to visualize the network architecture of the living brain. My fellowship will focus on using MRI techniques to map the interconnected network of the brain also called as the “connectome” and apply this knowledge to advance the understanding of neuropsychiatric disorders.
Novel Methods To Study Structural-functional Connectivity In Epilepsy And Schizophrenia
Funder
National Health and Medical Research Council
Funding Amount
$697,605.00
Summary
Magnetic Resonance Imaging (MRI) is a non-invasive method that has revolutionised our understanding of clinical neuroscience. MRI provides not only high-contrast anatomical images, but also information on brain physiology and function. My primary goal is to develop and optimise novel MRI methods for a more accurate measure of brain structure and function. My research program will focus on the application of these methods to the investigation of epilepsy and schizophrenia.