This study investigates how much an individual's genes and environment account for the wide variation in brain structure and function. Using brain imaging we examine in what way the connectivity of the brain of identical and non-identical twins is the same or different from that of their co-twin, and carry out analysis of their DNA to identify some of the genes involved. This will provide fundamental information on genetic mechanisms influencing variation in brain structure and function.
A Prospective Study Of Language Impairment And Recovery Following Surgery For Brain Tumours
Funder
National Health and Medical Research Council
Funding Amount
$861,342.00
Summary
This multi-site project will investigate the incidence and nature of post-operative language difficulties (aphasia) in patients following surgery for left hemisphere primary brain tumours. It will provide comprehensive data concerning risk factors for post-surgical aphasia in Australian patients, in addition to important information about the brain lesions responsible for its various clinical presentations. This information will be used to generate recommendations for clinical practice.
The Tasmanian Healthy Brain Project: A Longitudinal Intervention Study To Reduce The Risk Of Ageing-related Cognitive Decline And Dementia
Funder
National Health and Medical Research Council
Funding Amount
$878,792.00
Summary
It has been proposed that engagement in purposeful complex mental stimulation provides protection against dementia. The Tasmanian Healthy Brain Project (THBP) is a unique, large-scale prospective trial that examines whether university-level study in older adult population reduces ageing-related cognitive decline and risk of dementia. This project will also examine how an individual’s genetic profile may influence the potential benefits of complex mental stimulation as well as risk of dementia.
Dopamine Neuron Ontogeny: Convergent Neurobiological Pathway For Risk Factors Of Schizophrenia
Funder
National Health and Medical Research Council
Funding Amount
$337,214.00
Summary
Schizophrenia is associated with changes in dopamine (a signalling molecule in the brain). These changes are present prior to psychosis, suggesting they begin early in development. Our aims are to manipulate key factors in the development of brain dopamine systems to clarify their role in psychosis and schizophrenia. This work has the potential to identify early brain changes that lead to schizophrenia, which in turn may generate better diagnoses and outcomes for people with this disorder.
Neurobiology Of Childhood Speech Disorders: Improving Detection, Diagnosis And Clinical Care
Funder
National Health and Medical Research Council
Funding Amount
$994,575.00
Summary
One in 20 children have a speech disorder at school entry, with lifelong deficits in psychosocial, academic and employment outcomes. Little is known about the aetiology of speech disorders, preventing targeted care. We combine expertise in speech pathology, gene discovery and brain imaging, to advance knowledge on gene and brain contributions to speech disorder. We will have direct impacts on clinical care including detection, diagnosis and counselling, optimising outcomes for affected children.
Stem Cell Treatment For Neonatal Hypoxic Ischaemic Encephalopathy
Funder
National Health and Medical Research Council
Funding Amount
$954,195.00
Summary
Hypoxic-ischaemic encephalopathy occurs when the fetus receives inadequate oxygen in labour and many babies die or have brain damage. Stem cell therapy might save these babies from brain damage but there are many unknowns, such as which stem cells to use and how many. Through our skills in stem cells and measuring the rescued brain following injury, we will determine the necessary details for the most effective stem cell therapy to be ready to immediately test the treatment in a RCT in babies.
Delayed Radial Glial Maturation Linked To NFI Deficiency As An Underlying Cause Of Cortical Defects In Humans And Mice
Funder
National Health and Medical Research Council
Funding Amount
$801,979.00
Summary
The timely generation of neurons and glia is important for brain development and consequently brain function throughout life. Nuclear factor I (NFI) genes are important for regulating the production of neurons and glia, and people with disrupted NFI genes have severe cognitive and motor deficits. Using human genetic data and mouse models, we will analyse how disrupting these genes affects brain development, and changes the overall structure and wiring of the cerebral cortex as well as behaviour.
Neurodevelopment During Adolescence: A Longitudinal Imaging Study
Funder
National Health and Medical Research Council
Funding Amount
$1,706,589.00
Summary
Adolescence is a risk period for the emergence of psychiatric disorders. It is also a time of rapid change in the brain, but few studies have detailed changes in neurodevelopment during this sensitive period. We will study twins from early adolescence and use brain imaging to investigate changing brain patterns as the brain matures, and thereby, gain insight into factors responsible for increasing our risk or resilience for major mental health conditions and optimal points for intervention.
Investigating The Molecular Signature Of ASD Through Integrative Genomics
Funder
National Health and Medical Research Council
Funding Amount
$621,128.00
Summary
Autism is the most severe end of a spectrum of neurodevelopmental conditions, autism spectrum disorders (ASD). We have identified a signature of genes dysregulated in the brain of autistic individuals. The proposed project will investigate how the molecular signature of autism is regulated in the brain, and whether genetic variants in regulatory DNA contribute to the genetic architecture of ASD.
Astroglial Remodelling Of The Interhemispheric Midline Is Regulated By Deleted In Colorectal Cancer (DCC) Signalling And Is Required For Corpus Callosum Formation
Funder
National Health and Medical Research Council
Funding Amount
$669,400.00
Summary
The integration of information between the brain hemispheres occurs via a large bundle of connecting nerve fibres called the corpus callosum. People with a genetic mutation in DCC display mirror movement disorder and some have a severe brain defect where the corpus callosum fails to form, but at present we don’t understand the function of this gene. In this study we will investigate how DCC functions in early brain development to regulate corpus callosum formation and mirror movement disorder.