View clinical trials related to Cognition Disorders.
Filter by:This study aims to evaluate the possible effect of dexamethasone on prevention of cognitive dysfunction in the postoperative period of elderly patients undergoing to surgery under general anesthesia.
Rationale: improving the early detection of AD at prodromal pre-dementia stages has become a major matter of concern. There is now an important body of literature stating that early isolated cognitive deficits (Mild Cognitive Impairment-MCI-) predict the risk of developing AD. Several biomarkers are now available : specific and sensitive neuropsychological assessments, morphometric evaluation of hippocampal volume and white matter changes by MRI, cerebrospinal fluid or plasma dosage of Ab fragments and tau proteins, assessment of brain glucose hypometabolism in temporo-parietal regions with PET [F18]FDG. However, PET imaging using labelled compounds specifically binding to APs has been suggested to improve the diagnostic reliability and to potentially help in shortening the delay until formal clinical diagnosis of AD. F18 AV45 is a new radiotracer which kinetics characteristics allows 10 to 15 minutes acquisition 50 to 60 minutes post injection. Objectives: The primary objective of the study is to compare F18 AV45 cortical uptake in AD, MCI patients and Healthy Controls. Secondary objectives will be to compare cortical uptake of F18 AV45 in MCI subject who will have convert toward dementia versus those who will not, at two year follow-up period, to compare level of 18F-AV45 cortical uptake with neuropsychological testing, PET FDG hypometabolism, ApoE genotype. Method: Prospective multicentric study. 65 patients expected to enter the study. Primary outcome measure: Standard Uptake Volume ratios.
The purpose of this study is to determine whether a medication called Vyvanse® (lisdexamfetamine; LDX) has an impact on cognitive functioning, specifically measures of sustained attention, verbal encoding and recall and working memory, in menopausal aged women. LDX is a medication used to treat attention deficit hyperactivity disorder (ADHD). The cognitive difficulties that menopausal women report experiencing are typical of adults who are diagnosed with ADHD. The investigators will assess whether or not LDX is effective in alleviating those cognitive disruptions when compared to a placebo.
The purpose of this study is to determine whether a home care medication management program which includes nurse coordination and use of the MD.2 medication-dispensing machine will affect older adults' health outcomes, satisfaction, use of health care services, and health care costs over a one year period. The investigators propose a longitudinal three group repeated measures design, enrolling, and randomly assigning, clients who are discharged from a home health care agency with documented problems in medication management. One group will receive the MD.2 medication dispensing device and nurse coordination, the second group will receive a Medplanner: a simple box that has separate compartments for individual medication times over the course of a week plus nurse coordination, and the final group will receive Usual Care. The study hypotheses are the following: H1: With respect to health status outcomes, the MD.2 group will exhibit a more positive trajectory in physical and mental health status, functional status, cognitive status and depressive symptoms over the course of a year than will the Medplanner Group. H2: With respect to health status outcomes, the Medplanner Group will exhibit a more positive trajectory in physical and mental health status, functional status, cognitive status and depressive symptoms over the course of a year than will the Usual Care Group. H3: The rate of hospitalization, hospital days and emergency department visits will be significantly lower for the MD.2 Group as compared to the Medplanner Group. H4: The rate of hospitalization, hospital days and emergency department visits will be significantly lower for the Medplanner Group as compared to the Usual Care Group. H5: The nursing home admission rate will be significantly lower for the MD.2 Group as compared to the Medplanner Group. H6: The nursing home admission rate will be significantly lower for the Medplanner Group as compared to the Usual Care Group. H7: The total cost of care will be significantly lower for the MD.2 Group as compared to the Medplanner Group. H8: The total cost of care will be significantly lower for the Medplanner Group as compared to The Usual Care Group. H9: There will be incremental savings in terms of costs per quality adjusted life year (QALY) gained in the MD.2 group compared with the Medplanner Group. H10: There will be incremental savings in terms of costs per QALY gained in the Medplanner group compared with the Usual Care Group.
Based on prior published pilot studies, the investigators have initiated a larger, multi-site placebo-controlled clinical trial with Alzheimer's disease (AD) patients and individuals diagnosed with Mild Cognitive Impairment (MCI), with the hopes of (1) confirming (or denying) the above promising clinical findings, and (2) determining whether or not our formulation can delay MCI "conversion" to AD.
Background: - Varenicline (Chantix ) is a drug that is approved by the Food and Drug Administration (FDA) to help people stop smoking. Varenicline is very effective in helping some people quit smoking, but is less effective for others. Researchers are interested in conducting more in-depth studies into how varenicline works, including its effect on smokers' responses to items that may trigger cigarette cravings, in order to develop better smoking cessation medications. Objectives: - To examine the effectiveness of varenicline as an effective medication for tobacco addiction by studying its effect on nicotine reinforcement, nicotine-seeking behavior, cue-elicited craving, and performance impairment and craving after overnight tobacco deprivation. Eligibility: - Individuals between 18 and 50 years of age who have been smoking at least 10 cigarettes per day for at least 2 years. Design: - This study will require 12 study visits. Some visits will be brief and other visits that involve test sessions will last up to 8 hours. If no sessions are repeated, the study will take 26 days. Participants will not be required to attempt to quit smoking during this study. - Participants will be screened with a full physical examination and medical history, blood and urine tests, and other tests as required by the study researchers. - Participants will take two sets of pills during the study: the first set during the first 12 days of the study, followed by a 2-day break, then the second set during the last 12 days. Some of the pills will contain varenicline, and others will be placebos. - On Day 1 of the study, participants will come to the National Institute on Drug Abuse to receive the first set of pills. Participants will take the first pill before leaving. - On Day 8, participants will have a training session that will measure the amount of carbon monoxide in the breath. Participants will also complete several questionnaires about smoking habits and current mood, and will have a chance to practice the procedures they will do in the study. - On Days 9 and 10, participants will have behavioral test sessions that will last 7 to 8 hours. Day 9 will involve tests of cue response to items that may trigger cigarette cravings, and tests of general nicotine cravings over several hours. Day 10 will involve tests of general nicotine cravings over several hours, and then tests of nicotine-seeking behavior. Participants will be provided with lunch during these all-day sessions. - On Day 11, participants will have memory and attention tests, and will provide a blood sample. Participants will not be allowed to smoke for 12 hours before the start of the next test on Day 12. - On Day 12, participants will provide a breath sample, and will have two sets of memory and attention tests before they will be permitted to start smoking again. There will be no tests on Days 13 and 14. - Starting on Day 15, participants will repeat the schedule of tests from Days 1 through 12 with the second set of pills.
Multiple sclerosis (MS) is a progressive neurological disease that affects over 2.5 million people worldwide. Up to 50% of persons with MS (PwMS) will experience some form of cognitive impairment as a result of the disease including disturbances in memory, attention, concentration, information processing, and executive functions such as problem solving, and self-monitoring. MS-related cognitive impairments negatively affect many aspects of functioning and independent participation in everyday life. Thus, PwMS who experience cognitive impairments face a wide array of recurring barriers that pose grave challenges to carrying out everyday activities while trying to maintain multiple life roles and as they age. Management of cognitive symptoms can be addressed through rehabilitation which has the potential to reduce disability, prevent complications of the disease, and enhance participation, independence, and quality of life. Considering the high frequency of cognitive impairments in MS and their significant, complex impact on functioning and independence, it is critical that cognitive interventions be an essential component of MS rehabilitation. The overarching goal of this study is to develop and test a self-management, group-based cognitive rehabilitation program designed specifically for PwMS.
This study will examine the effects of a theoretically grounded and manualized cognitive rehabilitation program on patients with Spina Bifida (SB). SB is often associated with deficit in higher order control over cognition, emotion and behaviour; which is typically referred to as executive functions. The present study will examine the efficacy of Goal Management Training (GMT) in patients with SB that experience executive difficulties. It is expected that GMT will have a favourable effect on cognitive executive functioning, psychological and health related factors.
Following chemotherapy, some breast cancer survivors report alterations in their ability to remember, concentrate, or think, which can have significant emotional, psychological, and economic impact on their lives. Survivors have also reported feeling frustrated by the response of the medical community, who either may not acknowledge their symptoms or have no treatment options to suggest. Exercise may be a promising treatment, as improvements in cognitive function with exercise have been demonstrated in older adults and other clinical populations. The investigators will recruit women who have completed chemotherapy for breast cancer (within the past 2 years) and report cognitive changes. Women will be randomly assigned to either a 24-week aerobic exercise intervention or delayed exercise control (offered the same exercise program following the study). At the start and end of the study the investigators will measure: i) performance on four standard neuropsychological tests that measure working memory, learning, and problem solving; ii) a questionnaire on cognitive function and its impact on quality of life; iii) functional magnetic resonance imaging (fMRI) during two of the standard neuropsychological tests which provides information on how the brain is working during the tests. To knowledge of the investigators this is the first study to examine the effect of an exercise intervention on cognitive function in breast cancer survivors. In addition, the use of fMRI imaging is a new way to approach this research question, and may be more sensitive to change than traditional measures of cognitive function.
Memory is constituted by a set of mental abilities of information processing that will be available at a later time. Flawless performance depends on several brain systems and other cognitive domains. Normal aging is characterized by cognitive deficits that may worsen the production capacity and quality of life. Such deficits represent variations of normal , and may stabilize,or even better progress. Include multiple cognitive domains, such as working and episodic memory, and attention. Despite the heterogeneity of the nature and severity of these deficits, common characteristics were observed in neuropsychological assessment of that population, for example, reduction in processing speed. There is an important gap in the therapeutic approach of these individuals. Transcranial magnetic stimulation (TMS) is a noninvasive and promising intervention, with potential to improve memory and cognition activating networks that operate on memory or other networks that interfere with cognitive performance. The technique relies on generating a variable magnetic field originated from an alternating electric current applied to the human skull reaching focal cortical regions. This study is a sham-controlled clinical trial, randomized, double-blind study. It will be evaluated the effects of repetitive transcranial magnetic stimulation (rTMS) on global cognition (memory, attention, language, executive functions, planning, logical reasoning, calculation and visual-spatial perception), especially memory, of elderly individuals with mild cognitive impairment, included in the domain of cognitive impairment no dementia (CIND).