Regulation Of Dendritic Ion Channels And Its Role In Intrinsic Neuronal Excitability In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$402,810.00
Summary
Nerve cells are able to regulate their activity to maintain the reliable transfer of information between cells. By conducting detailed electrical and chemical analysis of nerve cells this project will increase our understanding of how nerve cells regulate their activity, and provide important information on how this activity may be altered in brain disorders like epilepsy. The results of this research may also lead to the development of new more effective drugs to treat many brain disorders.
Synaptic Inhibition And The Control Of Excitability In The Rodent Piriform Cortex
Funder
National Health and Medical Research Council
Funding Amount
$459,738.00
Summary
We are studying the properties of neurons (nerve cells) and brain circuits that enable mammals to recognise and remember odours. Our experiments will focus on neurons in the odour-processing region of the cerebral cortex of mice. This work will answer fundamental questions about how the brain interprets sensory inputs in order to build a coherent picture of the external world. Our findings will also provide a deeper understanding of the causes of epilepsy, leading to improved treatments.
Excitability And Hyperexcitability Of Neural Circuits In The Rodent Piriform Cortex
Funder
National Health and Medical Research Council
Funding Amount
$371,807.00
Summary
We are studying the properties of neurons (nerve cells) and brain circuits that enable mammals to recognise and remember odours. Our experiments will focus on neurons in the odour-processing region of the cerebral cortex of mice. This work will answer fundamental questions about how the brain interprets sensory inputs in order to build a coherent picture of the external world. Our findings will also provide a deeper understanding of the causes of epilepsy, leading to improved treatments.
Development Of A New Method Of Motor Unit Number Estimation For Use In Motor Neurone Disease
Funder
National Health and Medical Research Council
Funding Amount
$480,127.00
Summary
This project aims to help understand motor neurone disease, which is a severe disease that leads to paralysis and death. In motor neurone disease there is of death of the nerve cells that maks muscles move. We have developed a new method of measuring the number of motor nerve cells. We will use this to study the different types of motor neurone disease.
Changes In Motoneurone And Motor Axon Properties Distal To The Lesion In Stroke
Funder
National Health and Medical Research Council
Funding Amount
$367,530.00
Summary
Following a stroke, adaptive changes occur in spinal cord motoneurones below the level of the stroke, but these are poorly understood. Apart from the exaggeration of spinal reflexes, distal changes have largely been neglected by clinicians. Even the mechanisms responsible for the exaggeration of spinal reflexes are still debated, in part because no single process can account for it. Using novel experimental techniques originally developed to study biophysical properties of human peripheral nerve ....Following a stroke, adaptive changes occur in spinal cord motoneurones below the level of the stroke, but these are poorly understood. Apart from the exaggeration of spinal reflexes, distal changes have largely been neglected by clinicians. Even the mechanisms responsible for the exaggeration of spinal reflexes are still debated, in part because no single process can account for it. Using novel experimental techniques originally developed to study biophysical properties of human peripheral nerves, this project will quantify the changes in excitability that occur in motoneurones and their peripheral extension, the motor axon, and compare these with the findings on the non-paralysed side of the same patients and with healthy matched control subjects. The changes that occur over time will be documented in longitudinal studies. The findings will be correlated with the patient's clinical status, providing insight into the extent to which changes in motoneurone properties drive clinical manifestations such as spasticity. In addition, control studies will provide further insight into whether disturbed transmission in some specific spinal reflex pathways contributes significantly to spasticity. The project is important for understanding the nature of adaptive changes (plasticity) in neural structures following lesions in the central nervous system and will shed light on the remote changes that occur in stroke. The studies are relevant not only for understanding current deficits but also for understanding and perhaps altering outcomes using rehabilitation procedures.Read moreRead less
A DENDRITIC SUBSTRATE FOR THE CHOLINERGIC CONTROL OF NEOCORTICAL OUTPUT
Funder
National Health and Medical Research Council
Funding Amount
$898,340.00
Summary
The forebrain cholinergic system controls neocortical activity and cognitive function. This project will investigate the mechanisms by which the cholinergic system controls neocortical circuit activity in rodent models using advanced optical and electrical recording methods. The results will provide a foundation for the understanding of how dysfunction of the cholinergic system results in cognitive decline in humans, and identify new targets for improved treatment of human cognitive impairment.
Epilepsy: Is It An Inherent State Of Cortical Hyper-excitability?
Funder
National Health and Medical Research Council
Funding Amount
$370,640.00
Summary
Transcranial magnetic stimulation (TMS) is a safe way to study the human brain and changes associated with epilepsy. I will use TMS to examine the effect of refractory epilepsy and recurrent seizures on the brain over time and how this differs to well controlled epilepsy and provoked isolated seizures. I will also explore the potential of using TMS to predict responsiveness to medication soon after starting treatment.
Cortical Excitation In Migraine: Using Vision To Understand And Track Brain Excitability
Funder
National Health and Medical Research Council
Funding Amount
$521,628.00
Summary
Migraine is a common neurological condition affecting approximately 15% of adults. Therapies are most effective if used early, yet many people are unable to predict their migraines or to recognize early signs. In addition to headache, key symptoms include abnormal visual and auditory experience. We propose that aspects of vision and hearing will vary systematically according to the current brain status. Our translational goal is to develop tests that allow individuals to better manage migraine.