View clinical trials related to Normal Aging.
Filter by:The primary objectives are to develop and validate a classifier using multimodal passive sensor data and metrics derived from normal iPhone and Apple Watch usage to distinguish individuals with normal cognition from those with mild cognitive impairment (MCI) and to develop and validate a cognitive wellness score that tracks fluctuations in cognitive performance over time using multimodal passive sensor data and metrics derived from normal iPhone and Apple Watch usage.
This research study explores the feasibility of pairing computer-based cognitive training (CBCT) with transcranial direct current stimulation (tDCS), a form of non-invasive brain stimulation, in order to enhance and preserve mental skills in older adults. The investigators aim to enhance participants ability to perform tasks of memory, attention, processing speed and other areas of cognition. Additionally, researchers are interested in the ability of the brain to adapt to change-neuroplasticity. Neuroplasticity is thought to impact how individuals respond to cognitive training and tDCS. In order to look at individual differences in neuroplasticity transcranial magnetic stimulation (TMS), a noninvasive brain stimulation technique, will be used. Individual responses to TMS can be used as a marker of neuroplastic changes in brain function, in order to reveal the relationship between brain plasticity and tDCS-induced changes in cognitive ability.
Background: Bone marrow is the soft material found inside most large bones of the body. Bone marrow produces red blood cells, white blood cells, and platelets that are released into the blood stream. Inside the marrow, these cells start off as young, immature cells called progenitor cells. Researchers want to study these cells in healthy people. Objective: To understand how progenitor cells change with age. Eligibility: Healthy people ages 18 and older Design: Participants will be screened with a questionnaire, a physical exam, and blood tests. Participants will have a bone marrow aspirate. They will be asked to lie on their stomach or side. A local anesthetic will be injected with a small needle under the skin at the site. A needle will then be placed through the skin and into the hip bone. A small amount of the liquid part of the bone marrow will be taken up into the needle. After the needle is removed, a pressure bandage will be placed on the site. Participants will be asked to become a repeat volunteer and have a bone marrow aspirate sample collected once every other year. They will have a physical exam and blood tests before each collection. The cells from the collection will be used for genetic testing and research. Participants will be in the study for as long as they remain healthy and willing to participate.
This is a study using Positron Emission Tomography (PET) to study the normal distribution of the PET ligand (R)-[11C]PK11195. This ligand will be used to study inflammation in the brain in several brain disorders like Alzheimer's disease and traumatic brain injury.