Identifying The Relationship Between Biochemical Markers And Healing In Chronic Leg Ulcers Treated With Compression
Funder
National Health and Medical Research Council
Funding Amount
$374,159.00
Summary
Chronic leg ulcers are a significant cause of pain, immobility and decreased quality of life for 1 - 3% of the over 60 years age group. The condition is difficult to heal and commonly becomes a long term problem, costing the Australian health care system over $500 million - year. Additional costs to the community include loss of productivity and social support systems necessary for people with limited mobility. As the number of people aged over 65 years is expected to double in the next few deca ....Chronic leg ulcers are a significant cause of pain, immobility and decreased quality of life for 1 - 3% of the over 60 years age group. The condition is difficult to heal and commonly becomes a long term problem, costing the Australian health care system over $500 million - year. Additional costs to the community include loss of productivity and social support systems necessary for people with limited mobility. As the number of people aged over 65 years is expected to double in the next few decades, this problem will become increasingly significant. Most chronic leg ulcers are caused by venous disease, and compression bandage therapy is the accepted standard treatment. However, there is little information available on the cellular responses associated with compression treatment and how they promote wound healing. The project proposed here will examine the cellular responses to compression and investigate the relationships between these cellular responses and wound healing. Knowledge gained from the study will provide valuable information for improved techniques to promote wound healing, improved ulcer healing rates, informed decisions on wound care treatment, improved qualtiy of life and reduced health care costs.Read moreRead less
Using Contextual Effects To Test Theories Of Coding In Visual Cortex
Funder
National Health and Medical Research Council
Funding Amount
$200,500.00
Summary
The visual cortex is the main structure in the brain that processes the visual scene. Cells in the cortex respond selectively to features of the scene such as the orientation of objects, the direction they move and their brightness relative to the background. Cortical cells are arranged in a topographic map of visual space, so that nearby cells respond to light from nearby parts of the image. Recent advances have shown that cells talk to each other so a stimulus in one part of the visual field c ....The visual cortex is the main structure in the brain that processes the visual scene. Cells in the cortex respond selectively to features of the scene such as the orientation of objects, the direction they move and their brightness relative to the background. Cortical cells are arranged in a topographic map of visual space, so that nearby cells respond to light from nearby parts of the image. Recent advances have shown that cells talk to each other so a stimulus in one part of the visual field can influence the responses of cells looking at other regions. This communication between cells is important in guiding the brain to focus on areas of the visual scene that are most important, a process known as attention. An example would be that a mouse moving through the periphery of someone's vision would attract their attention away from objects elsewhere in the scene. This project is designed to study the way that cells in the visual cortex cooperate to guide attention. Attention is important because it reduces the need to process all the detail in the visual scene with the same level of accuracy, leaving more resources free to process what is important. Attention deficits are a problem for people with dyslexia, so understanding the physiological basis of attention is an important goal. As well as attention, the visual system has a range of other mechanisms to select important information from the visual scene. For example, visual adaptation tends to improve the ability to code changes in the visual scene at the expense of reducing the sensitivity of the system overall. This project will investigate the relationship between attentional and adaptive mechanisms in the visual cortex. We expect to establish the precise physiological mechanisms that drive adaptive and attentional mechanisms in the mammalian brain.Read moreRead less