View clinical trials related to Cognitive Impairment, Mild.
Filter by:The goal of this study is to learn about the effects of scopolamine (an anticholinergic drug) on areas of the brain involved in memory, and changes it may have on brain activity. The investigators will do this by testing epileptic patients who are already undergoing intracranial surgery for seizure monitoring, and measuring the activity from the brain areas being assessed. The main questions it aims to answer are 1) whether scopolamine changes memory activity solely at encoding (the time when the person perceives and determines to remember an item or event) as has previously been found, or if it also can selectively impact retrieval (when the item or event which has been processed is recalled or remembered), and 2) what the nature of the brain activity changes is. Participants will complete two treatment arms. One of these will be with the drug, and the other will be with a saline solution, so that the participants are unaware which session the actual drug has been received. Patients will complete a verbal and/or spatial task each of the two days. An anesthesiologist will administer either the drug or the saline at a critical point which addresses both of the research questions. Researchers will compare the brain activity between the two treatment arms to determine what brain activity changes, and at what time point during memory formation.
Background: Sleep disturbances are highly prevalent in ageing population and patients with age-related neurodegenerative diseases, which severely affect cognition and even lead to accumulated amyloid-β (Aβ). At present, non-pharmacological interventions for sleep disturbances in dementia patients are accepted as first line of treatment, of which the evidence from clinical trials is very limited. Encouraging results from recent studies on transcranial direct current stimulation (tDCS) showed moderate positive effects on sleep quality in preclinical Alzheimer's disease (AD). Compared to tDCS, high-definition transcranial alternating current stimulation (HD-tACS) enables the entrainment of neuronal activities with optimized focality through injecting small electric current with a specific frequency and has significant enhancement effects on slow wave activities. Objectives: The investigators aim to 1) investigate and compare the safety, efficacy and sustainability of 40 Hz HD-tACS and HD-tDCS over left dorsolateral prefrontal cortex (DLPFC) in mild neurocognitive disorder due to AD (NCD-AD) patients with sleep disturbances; 2) examine the relationship between the changes in sleep quality, cognitive function and saliva Aβ levels. Methods: Chinese right-handed mild NCD-AD patients with sleep disturbances (aged from 60 to 90 years) will be randomly assigned to a 4-week intervention of either HD-tACS, HD-tDCS, or sham HD-tCS, with 33 participants per arm. Before intervention, structural magnetic resonance imaging (MRI) data is used to construct individual realistic head model. Comprehensive assessments, including sleep quality, cognitive performance and saliva Aβ levels will be conducted at baseline, 4th week, 8th week, 12th week and 24th week. Program adherence and adverse effects will be monitored throughout intervention. Data analysis: The primary outcomes will be the changes in sleep quality and memory performance with modality-driven paradigms (HD-tACS, HD-tDCS, sham HD-tCS), and comparisons of group differences across different time points. Secondary outcomes will be the changes objective sleep pattern, global cognition, saliva Aβ levels and quality of life. Intention-to-treat analysis will be carried out. Changes of efficacy indicators from baseline to each follow up point will be tested with mixed effect model. Significance: This study aims to investigate the feasibility, safety and efficacy of HD-tACS and HD-tDCS over left DLPFC for sleep disturbances and cognitive dysfunction in mild NCD-AD patients. It wills also test the program adherence, tolerability and adverse effects of this innovative neurotechonology. Information will be helpful for in-depth understanding the relationship of "sleep disturbances-amyloid deposition" and guiding the further studies of sleep medicine and neurodegenerative diseases.
High risk infant is defined as infant with a negative history of environmental and biological factors, which can lead to neuromotor development problems. It is a heterogeneous group of premature infants born under thirty-seven weeks of age, with infants with low birth weight, term or developmental retardation for various reasons. Therefore, preterm infants with low birth weight can survive with a neurological sequelae such as cerebral palsy (CP), epilepsy, hearing and vision loss, mental retardation, speech and speech problems, and learning difficulties. The clinical diagnosis of CP and learning diffuculties which can be observed in high-risk infants, is based on the combination of some neurological and clinical signs.
The purpose of this study is to investigate neurocognitive mechanisms underlying response to intervention aimed at enhancing, and remediating weaknesses in, numerical skills in children, including those with mathematical learning disabilities (MLD).
The purpose of this study is to test the feasibility of a telehealth Dyadic Life Review (DLR), adapted from individual Life Review Therapy, with caregivers of older adults with advanced cancer, including those with Mild Cognitive Impairment (MCI). The study will enroll 20 dyads of caregivers and older patients with advanced cancer and 20 dyads of caregivers and patients with advanced cancer and Mild Cognitive Impairment (MCI).
Develop a game-based upper-extremity motor and cognitive rehabilitation system using custom and adaptable virtual reality simulations on a wearable device enhanced with biosensors. Participants are stage II and stage III breast cancer survivors with lasting cognitive impairments following their first round of chemotherapy. They will be randomized 1:1 into an experimental group and a sham control group. Each group will train in the home for 8 weeks, during which they will perform up to 4 rehabilitation sessions/week (based on tolerance). Each session will start with vitals being measured and logged. Each group will have three clinical evaluations: 1) at baseline; 2) at 8 weeks post-baseline; and 3) at 16 weeks from baseline for follow up. Experimental group sessions will consist of increasingly more difficult cognitive training tasks in the form of simulated tasks. Biosensors will be sampled while participants interact with these games while wearing the computer system. Sham control group will have the same number, suration and frequency of sessions, however they will play web games while wearing some the same biosensors. Caregivers of all subjects will receive a laptop to be used in filling subjective evaluation forms and sending messages to research team. Training will be in the home, so caregivers will need to support the trials by ensuring compliance with the protocol. All subjects will undergo standardized clinical evaluations at baseline, at 8 weeks and at 16 weeks from baseline. The subjects in the experimental group will have computerized measures taken during each session, and will fill subjective evaluation forms every 4 weeks of active training.
The intervention program proof-of-concept was assessed as a single-arm, within-subjects clinical study with a target enrollment of 10 participants with possible or probable amnestic MCI. The protocol required participants to complete a pre-intervention assessment within two weeks of beginning the intervention, attend seven, one-hour intervention group sessions across six weeks, complete a post-assessment and interview in the final week of the intervention, and complete weekly surveys throughout the intervention.
This study tests the feasibility, acceptability, and efficacy of a multimodal intervention (walking, social engagement, and reminiscence), including the use of wearable digital biomarkers, for cognitively healthy and mildly cognitively impaired African Americans aged 65 and older.
Nowadays, on geriatric centres, cognitive decline used to be prevented by pen and paper exercises (Calero García & Navarro Gonzalez, 2006). However, as Lampit et al. (2014) suggest, studies based on the efficacy and effectiveness of new cognitive-based interventions in order to improve these cognitive processes are fundamental (Lampit et al., 2014). Cognitive-based interventions are interventions that directly or indirectly try to improve cognitive processes (Chiu et al., 2017). Between the different kinds of cognitive-based interventions, cognitive training permits stablish randomized controlled trials. Cognitive training consists of repeating during a concrete time a standardized set of tasks in order to maintain or improve one or some cognitive processes. Meta-analysis studies have shown that computerized cognitive training can improve in a moderate size some cognitive processes in elderly people with mild cognitive impairment or dementia (Hill et al., 2017) and without those diagnoses (Lampit, Hallock, & Valenzuela, 2014; Chiu et al., 2017). Although it seems that computerized training is effective, safe and secure, it is important to note the social component of the definition of health (OMS, 1948). Chang, Wray & Lin (2014) found that social relationships predict the use of leisure activities and this predict a better physical health and wellbeing psychological. In fact, a comparative study found that those elderly people that have played board games have a 15% lower risk of having dementia diagnose and problems related with memory (Dartigues et al., 2013). To sum up, the aim of this research project is to test the effectiveness of a cognitive training based on modern board and card games in elderly people with a diagnose of mild-cognitive impairment in comparison to do cognitive paper and pencil tasks or in a wait-list comparison group.
The elderly population worldwide is expected to increase exponentially. There will be a higher percentage of older adults suffering cognitive decline in the coming decades. Cognitive impairment, being the most common health problem associated with ageing, contributes to possible loss of functional independence and disability. The purpose of this study is to determine the effectiveness of four mixed modalities of three training programs (combined cognitive and physical training [CCPT], cognitive or physical training only) on cognition and fitness of community-dwelling older adults in Hong Kong. The study hypotheses will be set as the integrated format of all three training will have higher cognition and fitness scores than other combinations of two training modes and all these mixed modalities will have greater positive outcomes than the active control subjects.