Pathologies Of Action Control: Amygdala-striatal Interactions And The Development Of Habits.
Funder
National Health and Medical Research Council
Funding Amount
$431,867.00
Summary
Changes in basal ganglia function, whether produced by neurodegenerative disorders, stroke, injury or disease, can produce pathological changes in action control. This proposal will assess the role of amygdala afferents on basal ganglia structures, most notably the dorsal striatum, in this process. Using an animal model we will compare the role of central and basolateral amygdala inputs to striatum in decision-making, choice and the transition of actions to reflexive, habitual responses.
Strabismus is the pathological misalignment of the eyes associated with loss of binocular vision and is one of the most common human ophthalmological disorders. Patients with comitant strabismus have full eye movements, whereas patients with incomitant strabismus have limited eye movements, which causes the angle of strabismus to vary with gaze direction. This project aims to define genetic contributors to comitant congenital strabismus.
Eye Movements And The Neural Representation Of Visual Space
Funder
National Health and Medical Research Council
Funding Amount
$459,061.00
Summary
This project will investigate the brain mechanisms that underlie our ability to perceive the locations of objects using vision. This fundamental ability supports a range of important functions including visually-guided reaching, navigation during walking, and spatial awareness, but remains poorly understood. Using physiological, behavioural, and analytical methods, this project will fill a key knowledge gap in visual neuroscience and form a basis for a range of clinical and biomedical advances.
Ictal Characteristics Of Common Vestibular Diseases
Funder
National Health and Medical Research Council
Funding Amount
$281,573.00
Summary
vertigo is a disabling symptom affecting 1 million Australians at any given time. Acute vertigo is associated with abnormal eye movements or nystagmus, the pattern of which points to its origin. In this project, we extract the unique characteristics of distinct vertigo syndromes to enable their separation
The Effect Of Visual Impairment Arising From The Eye Diseases Glaucoma And Age-related Maculopathy On Driving Safety
Funder
National Health and Medical Research Council
Funding Amount
$645,591.00
Summary
Driving-related injuries are a serious public health problem for older people. Visual impairment is a significant risk factor for crashes. This prospective study will determine how the eye diseases glaucoma and age-related macular degeneration impact on driving safety. The outcomes will be used to develop a simple, reliable and practical battery of tests that can identify those at risk of crashes and to inform screening and intervention programs, patient education and driver licensing.
Mechanisms And Pathways Leading To Saccadic Suppression In Primate Brain
Funder
National Health and Medical Research Council
Funding Amount
$858,086.00
Summary
Only the central few degrees of the visual field are viewed in high resolution. Consequently, the eyes must be pointed at targets of interest using saccadic eye movements. Each saccade generates potentially disturbing image motion but this is never perceived: saccadic suppression. This project aims to characterise the neural basis of saccadic suppression using modern techniques. As a result, a prime question in Neuroscience for over 100 years can now be answered.
Optimising The Diagnosis And Management Of Treatment Refractory Benign Positioning Vertigo
Funder
National Health and Medical Research Council
Funding Amount
$286,466.00
Summary
Benign Positioning Vertigo, the most common and correctable cause of dizziness, is caused by freely floating calcium carbonate crystals in the semicircular canals of the inner ear. Localizing the affected semicircular canal holds the key to effective treatment.A proportion of sufferers will not respond to conventional repositioning treatments due to incorrect diagnoses. This study will explore refractory BPV in detail, develop test methods that accurately localize the affected canal and devise t ....Benign Positioning Vertigo, the most common and correctable cause of dizziness, is caused by freely floating calcium carbonate crystals in the semicircular canals of the inner ear. Localizing the affected semicircular canal holds the key to effective treatment.A proportion of sufferers will not respond to conventional repositioning treatments due to incorrect diagnoses. This study will explore refractory BPV in detail, develop test methods that accurately localize the affected canal and devise treatments for resistant BPV subtypes.Read moreRead less
A Window Of Vulnerability: Impaired Fear Inhibition In Adolescent Rats
Funder
National Health and Medical Research Council
Funding Amount
$335,849.00
Summary
Adolescence is a period of increased vulnerability to anxiety disorders. The brain undergoes substantial maturation during adolescence, particularly the prefrontal cortex (PFC), a region critical for inhibiting fear. This project examines why fear inhibition is impaired in adolescents and compares the neural mechanisms mediating treatments that enhance fear reduction in adolescence. This research adds new knowledge about novel approaches for early interventions for adolescent anxiety.
A core feature of clinical anxiety is the inability to learn about safety and suppress fear. Impaired safety learning underpins excessive fear responding, overgeneralisation of fear, as well as treatment resistance in clinical anxiety. Very little is known about the brain mechanisms for learned safety. This project maps and manipulates these mechanisms to lay the basic science foundation for the next generation of treatments of anxiety.
Brain Circuits Promoting Abstinence And Preventing Relapse To Alcohol Seeking
Funder
National Health and Medical Research Council
Funding Amount
$591,995.00
Summary
This project maps and manipulates the brain circuits that promote abstinence from alcohol use. It uses new techniques from neuroscience to control the activity of specific cell types in discrete brain circuits. In this way we can alter the activity of these circuits to build on the normal neural restorative processes that occur during abstinence from alcohol use to reduce, and possibly prevent, relapse.