Volitional And Non-volitional Control Of Human Balance: Normal Physiology And Changes With Ageing
Funder
National Health and Medical Research Council
Funding Amount
$383,066.00
Summary
How does the brain control balance when we stand? Our research shows that two very distinct processes operate to produce distinct postural, perceptual and cardiovascular outcomes. These experiments investigate the neurophysiology that coordinates these systems and what happens with age. The results will fundamentally change views on balance control. Balance problems are common in neurological disorders and old age. Knowing how balance works will improve diagnosis, treatment and rehabilitation.
The Vestibulo-collic Reflex In Humans And Its Use In Diagnosis Of Vertigo
Funder
National Health and Medical Research Council
Funding Amount
$278,691.00
Summary
This project will investigate the vestibulo-collic reflex (VCR): a head-stabilising reflex of the neck muscles. The VCR plays an important role in human balance, but is not well-understood. A form of the reflex is used to test vestibular (balance) function in patients with dizziness and vertigo, however the accuracy and interpretation of the test as it is currently used is not optimal. This project aims to improve the accuracy of the VCR in the diagnosis of balance disorders.
Whether holding the arm still or standing, the brain uses a silent proprioceptive sense that unconsciously detects and controls our movements. Key sensory receptors for this sense are located within the muscles that are also contracting. This is a project to discover how proprioception is affected by muscle contraction and how this affects postural control. This will improve the management of many common disorders that affect movement and balance.
The final and most effective means that we have to stop a fall is the stepping reflex, which is an automatic response when the body topples. For many elderly and others, this reflex does not work effectively and leads to falls and injuries. Although we know a lot about human balance and standing, we know little about this stepping reflex. This project investigates the basic physiology of the stepping reflex and how it is affected by age with the aim of preventing falls and injuries.
Bridging The Gap Between Laboratory And Clinic Using Low Cost, High Tech Physical Function Assessment Tools
Funder
National Health and Medical Research Council
Funding Amount
$428,065.00
Summary
Gold-standard testing protocols for assessing standing balance, gait and activities of daily living is often a primary focus for therapeutic interventions. They often incorporate multiple force platforms and 3D motion analysis, which provide valuable information however the time, cost and infrastructure required excludes their use in normal clinical practice. This fellowship examines the potential efficacy of low cost, widely available alternatives such as video gaming devices and smart phones.
Assessment Of Vestibular Function And Balance In Humans
Funder
National Health and Medical Research Council
Funding Amount
$205,500.00
Summary
This proposal focuses upon the function of the vestibular apparatus and the related problem of impaired balance. The vestibular apparatus contains receptors which help us to maintain balance. Their clinical assessment is difficult because they are small and lie deep within the skull. With previous NH and MRC support, I have been able to develop a series of new tests to assess the function of the vestibular apparatus and these are having significant clincal impact. Amongst the findings has been a ....This proposal focuses upon the function of the vestibular apparatus and the related problem of impaired balance. The vestibular apparatus contains receptors which help us to maintain balance. Their clinical assessment is difficult because they are small and lie deep within the skull. With previous NH and MRC support, I have been able to develop a series of new tests to assess the function of the vestibular apparatus and these are having significant clincal impact. Amongst the findings has been a clear demonstration that vestibular function declines with age, starting relatively early. This proposal builds upon the findings of the previous application. Two main types of investigations are planned. In one a new technique of activating the vestibular apparatus (localised skull vibration) will be used to study the brain areas that receive its signals (evoked potentials). This will be the first time that it has been possible to study the connections between the balance organs and the cortex of the brain in intact humans. I will apply the technique to patients with disturbed vestibular function to improve our knowledge of how the brain adapts to disease of these organs. In the second part of this study, a series of recordings will be done measuring sway under a variety of conditions both in normal volunteers and in patients with some common disease states affecting balance. This should reveal new information about both the factors that affect normal balance function and why balance is disturbed in these diseases.Read moreRead less
Improving Postural Stability In People With Parkinson's Disease Using Textured Insoles.
Funder
National Health and Medical Research Council
Funding Amount
$968,538.00
Summary
Falls are a major health and injury problem for people with Parkinson's disease (PD). In this study we propose to undertake a randomised control trial to determine the efficacy of textured insoles to improve postural stability and reduce falls risk in people with Parkinson’s disease. The success of such an inexpensive device would result in improved health outcomes for individuals and large savings in health care through a reduction in fall-related injuries.
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