View clinical trials related to Cognitive Dysfunction.
Filter by:Cognitive impairment may cause problems in planning and initiating daily activities, as well as remembering to do what is scheduled. This study investigates the effectiveness of an interactive web-based mobile reminder calendar, (RemindMe). The calendar sends text messages to the user's mobile phone as support in everyday life, for persons with cognitive impairment due to neurological injury/diagnoses. The study has a randomized controlled trial design with data collection at baseline and at follow-up sessions after two and four months. Data collection started in October 2016 and continued until February 2018. RemindMe may give the needed support to remind the person and thus increase the ability to perform activities and to become independent in everyday life.
Late-Life Depression (LLD), or depression in older adults, often presents with motivational deficits, deficits in performance in cognitive domains including processing speed and executive dysfunction, and mobility impairments. This triad of findings implicate dopaminergic dysfunction as a core pathophysiologic feature in depression, and may contribute to cognitive decline and motor disability. Normal aging results in brain-wide dopamine declines, decreased D1/D2 receptor density, and loss of dopamine transporters. Although brain changes associated with depression and aging converge on dopamine circuits, the specific disturbances in LLD and how responsive the system is to modulation remain unclear. In this study, investigators are testing integrative model that aging, in concert with pro-inflammatory shifts, decreases dopamine signaling. These signally changes affects behaviors supported by these circuits, in the context of age-associated cortical atrophy and ischemic microvascular changes, resulting in variable LLD phenotypes. Investigators propose a primary pathway where dopaminergic dysfunction in depressed elders contributes to slowed processing speed and mobility impairments that increase the effort cost associated with voluntary behavior. The central hypothesis of this study is that late-life depression is characterized by dysfunction in the dopamine system and, by enhancing dopamine functioning in the brain. By improving cognitive and motor slowing, administration of carbidopa/levodopa (L-DOPA) will improve depressive symptoms.
A Phase 1 study designed to evaluate imaging characteristics of flortaucipir in the preclinical, prodromal and dementia phases of Alzheimer's disease.
The main purpose of the Study is to develop an understanding over time and through multiple research projects, including surveys, interviews, online focus groups, and other primary research methodologies (A-LIST Research Projects) on what matters most to individuals concerned about brain health and those with and/or affected by Alzheimer's disease and other dementias, including caregivers.
This study will examine whether semaglutide may improve cognitive function in individuals with major depressive disorder (MDD).
This smartphone-based personalized multiple intervention study aims to prevent cognitive impairment and reduce dementia and cerebrovascular events in 45-74 year old persons with high risk of stroke in China. The investigators plan to monitor and manage participants' behavioral and health (vascular risk factors control, sleep quality, mental health and cognitive training) based on self-monitoring and personalized feedback via smartphone app. The short-term primary outcome is 1-year change in global cognitive score measured by a modified National Institute of Neurological Disorders and Stroke and Canadian Stroke Network-Canadian Stroke Network protocol. The investigators hypothesize that the intervention based on self-monitoring and personalized feedback will prevent cognitive decline by the initial 1-year intervention. The long-term primary outcome is the development of dementia and cerebrovascular events during a total of 5 years' follow-up. The investigators hypothesize that the smartphone-based personalized multiple intervention may reduce the 5-year risk of dementia and cerebrovascular events, mainly through the improvement in vascular risk factors control, sleep quality, mental health and cognitive training activities.
Introduction Sedentary behaviour refers to activities of low energy expenditure in lying and sitting positions. Examples include driving, watching television, playing cards, puzzles and working on a computer. Studies suggest that between 60% of older people world-wide reported sitting for more than four hours per day. Sedentary behaviour increases as older people become older, have problems with cognition and when they are very ill. Excessive participating in sedentary behaviours is associated with an increased risk of heart problem, cancer death and diabetes. However, we do not know for certain whether or not participating in sedentary behaviour could cause poorer cognition. What does the study hope to achieve? This feasibility study will test whether the main study, which is planned for later, is workable with regards to the following: - Will reducing sedentary behaviour using our online health coaching intervention (WALC-R) be acceptable to research participants and caregivers? - How many participants can be successfully recruited to the future trial? - What is the rate of adverse event associated with proposed study intervention? Method: This is a 13-week randomised feasibility study. We will randomly assign study participants to either the health coaching intervention (WALC-R) or receiving health guidelines on recommended physical activity. We aim to recruit 40 participants aged 50 and over who have been diagnosed with Mild Cognitive Impairment. The future main study will be larger and test whether: • 'WALC-R', an online intervention designed to reduce participation in sedentary behaviour can improve cognitive function in older people with Mild Cognitive Impairment compared with providing an information sheet about physical activity.
This is a single-blinded, randomized controlled trail with pre- and post-measurements. The inclusion criteria are: (1) age between 65 to 90 years old, (2) the presence of at least one of the 5 physical characteristics defined by Fried, (3) with mini-mental state examination (MMSE) score≧24 and Montreal cognitive assessment (MoCA) score < 26, and (4) ability to walk independently for 1 min without assistive devices. The exclusion criteria are: unstable physical condition, any neurological, psychiatric disorder, or diagnosed with learning disability which may affect participation in this study. Twenty-eight elderly will be recruited, and randomly assigned to one of two groups: square-stepping exercise (SSE) group (n=14) or control group (n=14). The intervention for both group will be 50 minutes per session, 3 sessions per week for 8 weeks. The primary outcomes include frailty status indicated by Fried frailty criteria, and global cognitive function indicated by MoCA score. Secondary outcomes include frailty and MCI reverse rate, attention and memory, executive function, physical performance, and brain activation.
Epidemiological evidence suggests that healthy diet is associated with a slowdown of cognitive decline leading to dementia, but the underlying mechanisms are still partially unexplored. Diet is the main determinant of gut microbiota' composition, which in turn impacts on brain structures and functions, however to date no studies on this topic are available. The goal of the present paper is to describe the design and methodology of the NutBrain Study aimed at investigating the association of dietary habits with cognitive function, and their role in modulating the gut microbiota composition, and brain measures as well. This is a population-based cohort study of community-dwelling adults aged 65 years or more living in Northern Milan, Italy. At the point of presentation people are screened for cognitive functions. Socio-demographic characteristics along with lifestyles and dietary habits, medical history, drugs, functional status, and anthropometric measurements are also recorded. Individuals suspected to have cognitive impairment at the screening phase undergo a clinical evaluation including a neurological examination and a Magnetic Resonance Imaging (MRI) scanning (both structural and functional). Stool and blood samples for the gut microbiota analysis and for the evaluation of putative biological markers are also collected. For each subject with a confirmed diagnosis of Mild Cognitive Impairment (MCI), two cognitively intact controls of the same sex and age are visited. The investigators intend to enrol at least 683 individuals for the screening phase and approximately 240 persons for the clinical assessment. The NutBrain is an innovative study that incorporates modern and advanced technologies (i.e. microbiome and neuroimaging) into traditional epidemiologic design. The study represents a unique opportunity to address key questions about the role of modifiable risk factors on cognitive impairment, with a particular focus on dietary habits and their association with gut microbiota and markers of the brain-aging process. These findings will help to encourage and plan lifestyle interventions, for both prevention and treatment, aiming at promoting healthy cognitive ageing.
Today in elderly tooth loss and loss of oral function is widespread, but it is an underexplored modifiable risk factor potentially contributing to the development of dementia. In this interventional study a "cause-effect" relationship between mastication and cognition in humans will be investigated. A total of eighty (80) participants, 65-80 years of age, indicated for prosthodontic rehabilitation will be randomly assigned to either the experimental or the control group. Participants will be randomized into two different groups, measurements are going to be conducted before and after prosthetic rehabilitation. The difference between the two groups is that the control group are going to do two measurements before undergoing the rehabilitation, this to control for the test-re-test effect. The aim with this study is to determine if the rehabilitation of chewing function will cause changes in the neurocognitive assessments of episodic memory and learning.