View clinical trials related to Cognitive Dysfunction.
Filter by:The goal of this clinical trial is to learn about the effect of urolithin A, a dietary supplement, on blood flow in middle-aged adults with obesity. The main question it aims to answer is: - Does urolithin A supplementation improve blood flow in large and small blood vessels in middle-aged adults with obesity? Participants will be asked to: - Take the dietary supplement daily for 4 weeks - Attend two study visits to have their blood vessels checked, answer questionnaires, and give a sample of blood Researchers will compare people who took the dietary supplement with others who took a placebo to see if the blood flow in the blood vessels improved.
In all published series of adult chronic hydrocephalus, there is a percentage between twenty and twenty-five percent of patients who present poor results after implantation of a cerebrospinal fluid shunt,1-11 usually ventriculoperitoneal. The lumboperitoneal shunt is also used but much more rarely. The diagnosis of this pathology is based on the clinical picture, neuroimaging studies (Evans index and corpus callosum angle), cerebrospinal fluid dynamics tests (Katzman test), and invasive intracranial pressure measurements. Despite all this diagnostic arsenal, there is a high percentage of patients (mentioned above) in which treatment by diversion of cerebrospinal fluid does not offer the expected results. Traditionally this has been attributed to chronic adult hydrocephalus being associated with other types of dementia. This may be the case in some patients, and it would be important to be able to predict which patients will not improve or who will improve poorly in the case of implantation of a cerebrospinal fluid shunt.
The goal of this pilot work was to determine if the cognitive dysfunction accommodation strategies help patients retain/utilize more HIV prevention information and increase PrEP adherence. Fifty people who inject drugs (PWID) were prescribed PrEP and randomized to one of two conditions, Twenty-five PWID participated in a standard HIV prevention session and 25 other PWID participated in a HIV prevention session with the included accommodation strategies. At recruitment participants were asked to provide self-report of the screening form and cognitive functioning. The intervention consisted of a total of 5 sessions: 1 meeting to gain baseline information of participants and 4 intervention sessions. Participants completed the consent form, demographics, skills assessment, drug use behavior assessment, and HIV risk behavior assessment at the pre-interview meeting. Participants completed PrEP uptake assessments and skills assessments immediately following the intervention to compare the pre/post results between the two groups. All participants also completed an acceptability rating to help researchers determine the acceptability of the accommodation strategies used, at the end of the 4th session. The objective was to determine if the proposed accommodation strategies are feasible and efficacious at improving HIV prevention outcomes, including knowledge and skills. Information gleaned from this process will be used to refine the intervention approach for future testing and implementation.
The goal of this randomized controlled double-blind parallel-group interventional trial is to evaluate the effects of dietary supplementation with molecular hydrogen and pyrroloquinoline quinone in elderly. The main questions it aims to answer are: (1) whether the supplementation affects biomarkers of mitochondrial function in serum, and (2) whether the supplementation affects cognition and brain metabolism. The participants will be subjected to take the dietary supplement during 6 weeks.
Advance care planning is important for all adults, but perhaps even more so for the 5.7 million persons with Alzheimer's disease or related dementia (ADRD), due to the progressive and protracted cognitive deterioration associated with the disease process. In the context of ADRD, medical decision-making at the end of life is typically left to one's care partner, who often does not have the knowledge or confidence in their ability to make such decisions. This study will refine and evaluate a web-based platform, called the LEAD Intervention (Life-Planning in Early Alzheimer's and other Dementias), which is designed to help persons in the preclinical or early stage of ADRD engage in conversations about, document, and share their end-of-life values and preferences with a care partner, extended family members, and health care providers.
The purpose of this study is to identify unique profiles of speech and language changes that distinguish individuals with Parkinson's disease from adults without Parkinson's disease and individuals with Parkinson's disease with cognitive (e.g., memory, thinking skills) impairment from those without cognitive impairment.
The purpose of this clinical trial is to investigate the feasibility and efficacy of non-invasive transcranial alternating current stimulation (tACS) at gamma frequency in enhancing memory recall and modulating sleep network dynamics measured by at-home electroencephalography (EEG) in healthy elderly people. Eligible participants will first collect sleep EEG at home for one night to acclimate to the data collection during sleep. Participants are then randomized into first undergoing either tACS at gamma band frequencies (i.e. 40Hz) or tACS at a control frequency (i.e. 21Hz). Stimulation is administered in the lab during a cognitive testing battery that includes memorizing items. After a night of sleep with EEG at home, participants return to the lab the following day to measure memory recall. Recall is performed again after five days. This sequence of encoding during stimulation in the lab, sleep EEG at home for one night, and recall is then repeated for the other stimulation condition about a week later. Participants are wearing an actigraphy wristband throughout the study period.
The goal of this clinical study is to investigate the effectiveness of non-invasive stimulation to enhance cognitive control abilities in cognitively healthy adults and older adults diagnosed with mild cognitive disorder (MCI). The main questions it aims to answer are: - whether it is possible to restore various cognitive functions in older adults diagnosed with MCI by delivering theta burst stimulation (TBS), a form of transcranial magnetic stimulation, and - whether closed-loop TBS is able to induce therapeutic benefits that outperform open-loop TBS. Participants play a cognitive video game while a brain-computer interface (BCI) analyzes their electroencephalogram (EEG) signals and decodes the presence or absence of the contingent negative variation (CNV) potential, a marker of cognitive control. The BCI triggers TBS when its outputs indicate that the participant is not engaged properly in the video game. Researchers will compare the effects of sham, closed-loop, and open-loop TBS using the outcome metrics described below to see how much cognitive restorations is achievable with each stimulation modality.
OncoBRAIN aims to assess the effect of an innovative immersive virtual reality-based (IVR) intervention that includes cognitive, physical activity and mindfulness exercises in people diagnosed with cancer and Chemotherapy-Related Cognitive Deficits (CRCD). The main objective of OncoBRAIN is to determine the benefits of RVI intervention on the cognitive, and emotional state and quality of life of people with cancer and CRQD. We hypothesize that in OncoBRAIN we will find improvements in people with cancer and CRCD who have received IVR stimulation compared to the control group with cancer and CRCD who have not received IVR stimulation. People in the experimental group will perform better than patients in the control group in cognition (episodic memory, executive function, attention, and information processing speed), show better emotional well-being and perceive a better quality of life at the end of the intervention.
The project is a placebo-controlled study that aims to use closed-loop transcranial alternating current stimulation (tACS) to study patients with symptoms of mild cognitive impairment which is likely due to Alzheimer's disease or another form of dementia (AD-MCI). Patients will undergo an EEG and complete some questionnaires and computer tasks during each study visit. The project has the following aims and hypotheses: 1.) To determine the impact of closed-loop 40 Hz tACS on the entrainment of natural gamma rhythms in patients with AD-MCI, 2.) To determine the impact of closed-loop 40 Hz tACS on cognitive performance in patients with AD-MCI, and 3.) To assess the relationship between baseline neurodegenerative burden and impact of tACS. [exploratory]