View clinical trials related to Cognition Disorders.
Filter by:Evaluate 18F-AV-45 positron emission tomography (PET) imaging for distinguishing healthy control subjects, from subjects with Alzheimer's disease (AD) or Mild cognitive impairment (MCI).
This study will test whether donepezil (Aricept(Registered Trademark)), a drug that is approved by the Food and Drug Administration to treat Alzheimer's disease, can increase rapid eye movement (REM) sleep in children with autism and autism spectrum disorder (ASD). Some children with autism and ASD spend very little time in REM sleep. In some studies, decreased REM sleep has been associated with learning and behavior problems. Donepezil can increase REM sleep in some adults with different disorders. If it can increase REM sleep in children in this study, it might be able to be used in future studies to see if it can help learning and behavior problems in children with autism and ASD. Children between 2 and 10 years of age with autism or an ASD whose percentage of REM sleep time is well below the average for children of the same age may be eligible for this study. Candidates are screened with a medical history, physical and neurological examinations, blood tests, electroencephalogram (EEG) and a sleep study. The sleep study requires an overnight stay at the NIH Clinical Center in which the child is monitored with electrodes for EEG and heartbeat recording, a tube taped below the nose to measure airflow, a probe on a finger to record oxygen levels and a small watch-like machine on the wrist to record movements. Participating children may be required to have up to six overnight stays for sleep studies at the Clinical Center. The children start by taking 1.25 mg of donepezil for 2 to 4 weeks. Then they are admitted to the NIH Clinical Center for a sleep study, blood tests and EKG. Those whose REM sleep increases to normal levels stay on 1.25 mg of donepezil for 8 more weeks, after which they are admitted to the Clinical Center for a final physical examination, blood draw and sleep study. That ends their participation in the study. Children whose REM sleep does not increase to normal on 1.25 mg of donepezil are given a higher dose (2.5 mg) for 2 to 4 weeks, and the above procedure is repeated. Those whose REM sleep does not increase to normal on 2.5 mg of donepezil take 5 mg of the drug for 2 to 4 weeks, and the above procedure is repeated once more. Children whose REM sleep does not increase to normal on 5 mg of donepezil stop the medication and end their participation in the study. At each study visit, study researchers talk to the parents and examine the children to determine if donepezil is affecting the child's behavior and if the child is hav...
The study is a 24-week prospective, double blind, randomized, placebo-controlled pilot study of 9 mg / day Rivastigmine in patients with Vascular Cognitive Impairment Not Dementia (CIND) to evaluate efficacy, safety and tolerability in Asian patients. The hypothesis is that patients receiving Rivastigmine would improve in executive functioning domains.
The purpose of this study is to determine whether computerised cognitive rehabilitation training improves cognition in children who have had cerebral malaria.
The purpose of this study is to determine whether the interventions of Snoezelen, structured reminiscence therapy and 10-minutes activation are effective to reduce apathy in long term care residents with dementia.
Memantine is a glutamate NMDA receptor antagonist which has shown efficacy in cognitive dysfunction due to moderate to severe Alzheimer disease (Reisberg et al., 2003). The investigators propose to treat 75 subjects with bipolar disorder with minimal mood symptoms and cognitive dysfunction with memantine or placebo. The 75 subjects will be enrolled at three sites. The same study will be performed at all three sites, with each site functioning independently of the other. The investigators study will include objective neuropsychological testing of memory and executive functions before and after treatment, as well as ratings of mood symptoms and subjective patient ratings of memory function at every study visit. The principal aim of this study is to measure the efficacy of memantine on improving memory function in minimally symptomatic subjects with bipolar disorder. The investigators hypothesize that in minimally symptomatic subjects with bipolar disorder memantine will be efficacious in improving cognitive functions, as measured by the difference in neuropsychological test scores at the beginning and at the end of the trial. Secondary analyses will test the role of memantine in improving residual mood symptoms (depression and mania) in subjects with bipolar disorder. Demonstrating the role of memantine in reducing cognitive dysfunction in minimally symptomatic subjects with bipolar disorder promises to provide important clinical information, which could lead to improvements in well-being and functional status for large populations of subjects with bipolar disorder. There will be an optional open label 12-week extension to the study. Subjects will be restarted on memantine similar to the regimen in the first phase of the study. Subjects will meet with the investigators every four weeks (weeks 16, 20, and 24) for assessment as mentioned above. Neuropsychological testing will be repeated at week 24. It is the investigator's belief that this added timeline will better demonstrate any improvements in cognitive function.
This preliminary study is aimed to investigate whether it is feasible to conduct a study to use fish oil compared to the placebo(olive oil) in people with cognitive impairment. We will also explore whether fish oil has better efficacy in some clinical aspects in people with cognitive impairment during 24 weeks intervention. The major clinical outcome will be: 1. general clinical impression 2. cognitive function
This study tests the hypothesis that extrasynaptic mechanisms are critically linked with cognitive effects of NMDA antagonism as evidenced by event-related potentials (ERPs) in healthy humans.
The purpose of this study is to evaluate the effects of training in memory skills vs. use of external memory aids on everyday memory functioning in older people with mild cognitive impairment.
The purpose of this study is to examine the effects of blood pressure medications on cognition and blood flow in hypertensive elderly patients with cognitive impairment. The hypothesis is that treatment with an angiotensin receptor blocker (ARB) or an angiotensin-converting enzyme inhibitor (ACEI) will be associated with a slower rate of further cognitive decline, improved cerebral blood flow and its regulation, and preserved physical function as compared to treatment with a diuretic (HCTZ), independent of blood pressure level.