We do not possess a clinical test to assess balance pathways to the trunk and lower limbs. This project will use vibration pulses and a gentle electrical pulses to activate inner ear balance organs and evoke a postural response. We will assess healthy volunteers across age groups and dizzy patients . We will develop and disseminate a simplified test for widespread clinical use. Our findings will be used to refine and validate a predictive model of postural responses to electrical stimulation.
The Clinical Effectiveness Of A Simple New Treatment For Supine-dependent Obstructive Sleep Apnoea
Funder
National Health and Medical Research Council
Funding Amount
$529,178.00
Summary
Obstructive sleep apnoea is a common and debilitating breathing problem in sleep with serious effects on sleep and health. A third of patients could be very simply treated by avoiding sleeping on their back. Existing treatments are uncomfortable, often not used and better options are needed. This project will test symptom relief and treatment adherence with a new comfortable low cost supine avoidance therapy against current best practice treatment.
Experimental Validation Of A Clinical Indicator Of Utricular Function.
Funder
National Health and Medical Research Council
Funding Amount
$198,689.00
Summary
The vestibular system is responsible for our sense of balance, it is located in the inner ear and is responsible for maintaining posture and helping an organism to make appropriate eye movements when the head moves. Damage to the vestibular system by disease or accident is extremely debilitating for a patient. A chief goal of our research program is to develop simple tests of the vestibular system that can be used in the clinic to diagnose vestibular disorders. Most present clinical tests only t ....The vestibular system is responsible for our sense of balance, it is located in the inner ear and is responsible for maintaining posture and helping an organism to make appropriate eye movements when the head moves. Damage to the vestibular system by disease or accident is extremely debilitating for a patient. A chief goal of our research program is to develop simple tests of the vestibular system that can be used in the clinic to diagnose vestibular disorders. Most present clinical tests only test the part of the vestibular system that responds to angular rotations (the semicircular canals). There are few good tests that can reliably diagnose problems concerned with sensed position (the otoliths). Recent evidence from human studies has shown that by delivering small electrical currents (galvanic stimulation) via electrodes located on the surface of the skin behind the ears, a characteristic pattern of eye movement occurs. Our hypothesis is that the distinctive pattern of eye movement produced is a result of otolith stimulation. The aim of this project is to determine exactly how these small currents produce the eye movements and if these eye movements are in fact mediated by the otoliths. To determine the physiology that underlies these types of responses we are unable to conduct these experiments in humans. Our present program will therefore use both behavioural and physiological experiments on guinea pigs to test our hypotheses about galvanic stimulation and otolith function. The significance of this work lies in that it will lead to a new way of evaluating the function of the gravity sensing part of the human vestibular system which appear to be uniquely important for patients with balance problems.Read moreRead less
Collapsibility Of The Human Upper Airway: Relationships Between Sleep, Sedation, Anaesthesia And Head Posture.
Funder
National Health and Medical Research Council
Funding Amount
$469,359.00
Summary
The proposed studies will examine the sites and mechanisms of narrowing and collapse of the upper airway (throat) in individuals with obstructive sleep apnoea (OSA) during different levels of general anaesthesia, stages of sleep and head postures. The studies will help us understand the reasons for upper airway collapse in individuals with OSA and may result in the development of methods of identifying the most appropriate patients for specific surgical treatments of OSA.