Older adults typically have trouble identifying the speech they hear, especially in noisy environments. Fortunately, compared to younger adults, older adults are better able to compensate for difficulties identifying the speech they hear by recruiting the visual system. However, the extent to which older adults can benefit from visual input, and how this influence relates to age-related changes in brain structure and function, have not been thoroughly investigated. The general purpose of this study is to determine how age-related changes in brain structure and function affect how well people hear and see. This study seeks participants with normal hearing to mild hearing loss, who also have normal or corrected-to-normal vision.
This study examines eye movements and the pupil's response to light in progressive supranuclear palsy (PSP), comparing to Parkinson's disease and control subjects without neurological disease. Computerized measures of eye movements and pupil changes will be used. Subjects will also receive an eye exam to rule out other eye diseases. The goal of this study is to use subtle changes in eye movements and the pupil's response to light for earlier diagnosis of PSP.
This project, funded by the National Institutes of Health, is being conducted to learn how structures of the middle-ear and inner ear are affected by age and hearing ability, and to provide a scientific basis for diagnosis and rehabilitation of hearing loss. Volunteers who meet the eligibility requirements may enroll in this study, which will include measurements of hearing using several procedures. Participants 18 years of age and older with normal hearing or hearing loss are currently being recruited. One or two visits of 1.5 to 2 hours are required and scheduling is flexible. Compensation for time will be provided and parking validated.
Post-stroke hand impairment is highly prevalent and severely restricts functional ability and independence. Yet, there is no assistive device to help hand function at home, every day, during activities of daily living. This study addresses this gap by providing an innovative technology. The "TheraBracelet" is a wristband applying imperceptible white-noise vibration to skin. TheraBracelet is efficacious, as it has been shown to immediately improve chronic stroke survivors' touch sensation and hand dexterity in preliminary studies. TheraBracelet is affordable by using only a low-cost vibrator. TheraBracelet is also translational, because a vibrator strategically placed at the wrist does not interfere with dexterous finger motions, and it is low-risk by involving only imperceptible vibration on skin. These practicalities assure easy adoption in home environment for large impact on sensorimotor impairment. This study is to determine the feasibility and safety of using this assistive device all day every day for a month during daily activity, and to determine if TheraBracelet's instant effects are sustained during prolonged use. This objective will be accomplished in a double-blinded, randomized, controlled, crossover design study. Feasibility (compliance of using the device everyday) and safety will be assessed for the treatment condition compared to the control condition (wearing the device without vibration) through weekly evaluations. In addition, TheraBracelet's instant benefits in improving hand function will be assessed weekly. Persistence of TheraBracelet's instant benefits across all weekly evaluations will support durability (i.e. desensitization to vibration does not occur during extended daily use over a one-month period). This project is expected to lead to an assistive wristband that increases hand function during activities of daily living, thus increasing independence and quality of life and reducing caregiver burden for a large number of stroke survivors with hand impairment.
Low vitamin d levels are common among patients undergoing orthopedic surgery. However, very little is known about how vitamin d affects outcomes in patients undergoing total joint replacement surgery. Our study will look at how common low vitamin d status is among patients undergoing total hip and total knee replacement surgery. We will also look at how vitamin d levels affect complication rates and hospital readmission rates.
The purpose of this study is to find out whether a treatment that raises urate (also known as uric acid) levels can slow the rate of worsening in Parkinson's disease (PD). There is evidence that increased urate levels can predict both a lower risk of developing PD and a slower rate of its worsening over time. In this study, we will elevate blood urate levels with a supplement called Inosine. This research study will compare Inosine to a placebo. During this study you may get a placebo or Inosine. Study participation will consist of screening visits which include physical exam, lab work, questionnaires, and an additional scan. If you are eligible for the study, you will participate in approximately 10 study visits over approximately 2 years.
Individuals with venous leg and diabetic foot ulcers often find these ulcers take a long time to heal and when they do, sometimes they come back. These ulcers can be quite painful making it hard to work, sleep and go about one's day to day activities. You will be asked to do a self-care routine of taking the temperature of the skin where the leg or foot ulcer just healed with a special thermometer and applying a small cooling gel patch over this skin. We want to know if this routine will prevent the ulcer from coming back, help you to become more active, and improve the quality of your life.
This study will test a low intensity foot exercise program for people with lower leg ulcers and who have problems with walking to see if it improves the condition of the legs. A small activity monitoring tracker called an accelerometer will be placed on the foot during the exercises that are to be done in the home for about 6 weeks. The tracker sends movement information to a cell phone that lets you and your doctor know about improvements in the foot movements. Better foot movements help condition the muscles and joints and may improve activity such as walking and getting up from a chair.