View clinical trials related to Cognition Disorders.
Filter by:The purpose of the study is to test whether low level electric stimulation, called transcranial Direct Current Stimulation (tDCS), on the part of the brain (i.e., presupplementary motor area) thought to aid in memory will improve verbal retrieval in multiple sclerosis patients. The primary outcome measures are neuropsychological assessments of verbal retrieval, and the secondary measures are neuropsychological assessments of other cognitive abilities and electroencephalography (EEG) measures. Additionally, the study will examine the degree to which baseline assessments of cognition and concussion history predict responses to treatment over time, both on assessments administered within the intervention period and at follow-up.
Cognitive disorders are common after intensive care. Currently, their diagnosis is based on clinical tests. The investigators plan to study the relationship between different neurological blood biomarkers (cytokines, S100β protein, neuron specific enolase, total Tau protein and neurofilament light chain) and the occurrence of cognitive disorders during the three months following intensive care discharge.
The objective of this exploratory study is to elucidate the underlying cerebral mechanisms of cognitive deficits. To achieve this, the investigator will apply functional brain imaging techniques to patients suffering from cognitive deficits due to cerebral lesions. The investigator will employ a "single-case" approach, suitable for studying rare behavioral profiles such as acquired reading disorders (alexia) or visual perception impairments (agnosia). If necessary, the investigator will use multiple non-invasive imaging methods in the same patients, including: 1. Magnetic Resonance Imaging (structural and functional), renowned for its spatial resolution and the diverse information it provides, and 2. Electrophysiological methods (MEG and EEG), notable for their temporal resolution. The employed stimuli will consist of visual or auditory presentations of verbal material (words, sentences, numbers, etc.), potentially combined with the collection of simple vocal or motor responses (button presses). The results will be interpreted by integrating the neuropsychological analysis of the deficit and the lesion topography. Importantly, following the methodology of single-case neuropsychology, the stimulation protocols will be modulated and adapted to each individual case. Consequently, parallel data should be collected from healthy control subjects whenever necessary. For protocol development, the investigator will also collect purely behavioral data, without brain imaging, from groups of control subjects.
The aim of the MAPEG 2 study is to explore gustatory function and to follow its evolution in the 5 following groups of participants: - Healthy subjects - Participants with isolated cognitive complaint - Participants with minor neurocognitive disorder - Participants with mild Alzheimer-type major neurocognitive disorders - Participants with moderate Alzheimer-type major neurocognitive disorders For this purpose, we want to compare the results of the following tests: - Subjective taste tests (tasting solutions, answering food preference questionnaires), - Gustatory evoked potential (GEP) parameters, recorded by electrodes placed on the scalp, - And nutritional parameters (hormones of food intake by blood test, measurement of the global body composition). Identifying and following the evolution of early taste disorders in case of cognitive disorders could improve the diagnosis of Alzheimer's disease in two ways: - To allow an early diagnosis of Alzheimer's disease, and thus improve its management, - To define groups of subjects at risk of developing Alzheimer's disease in later years.
A study conducted in Finland discovered that a multidomain intervention, consisting of physical activity, nutritional guidance, cognitive training, social activities, and management of vascular risk factors, effectively decelerated cognitive decline in healthy older adults who were at an increased risk of cognitive decline. The HERITAGE study is a 2-year clustered randomized controlled trial (clustered-RCT) that explores the efficacy of a multidomain intervention among 1200 elderly residents with a higher risk of cognitive decline and dementia in Zhejiang Province, China
Study Design - A Counterbalanced Study Aims - To determine the effect of a) warm-up exercises and b) mental visualisation on the musculoskeletal demands and cognitive demands respectively during robot-assisted laparoscopic surgery. Outcome Measures - 1. EMG measurements of frequency and amplitude across muscle fibres. 2. EEG measurements of peak alpha power, and alpha spindle duration and amplitude. Study Participants and Eligibility - Surgeons who have certificates of completion of training (CCT) and performing surgical procedures using the minimally invasive techniques of RALS. Planned Size of Sample - The investigators have chosen the higher value for our power calculation (an effect size of 0.24) which requires 10 surgeons per condition performing 1 -2 operations for 80% power to detect a difference between conditions, at an alpha of 0.05. Planned Study Period-Duration - Each surgeon will be required to participate in the study for approximately 3 - 4 weeks performing 3 surgical procedures and based on estimates that surgeons routinely perform an average of 1 robotic procedure per week we anticipate the study will run for 6 months. Research Question - Does structured simulated warm-up exercises prior to performing surgery improve surgeons' ergonomic awareness and maintain the low muscle fatigue impact associated with RALS? The investigators also hypothesize that mental imagery, inducing a flow state associated with overall cortical synchronisation could decrease cognitive demands experienced by surgeons and potentially mitigate against the cognitive fatigue surgeons experience whilst performing procedures.
The investigators conducted a validation study for the Montreal Cognitive Assessment (MoCA)-XpressO compared to the digital-MoCA test (version 8.1) as the gold standard. Participants were recruited from the MoCA clinic and a family practice. Ethics approval was received, and all participants provided informed consent. A crossover study design was applied to the MoCA-XpressO and the digital-MoCA test; participants were randomized for the order of administration. The investigators only recruited participants who did not complete a MoCA test during the 3 months prior to the study. A logistic regression model was built, and the accuracy of the model was evaluated by the sensitivity, specificity, and area under the Receiver Operating Characteristic (ROC) curve.
The goal of this 13-year follow up of a randomized control trial is to study the effect of maternal choline supplementation on offspring cognition in adolescence. The main question[s] it aims to answer are: Does a higher dose of maternal choline choline (930 mg/d day supplementation) lead to improved cognition in adolescence including hippocampal-dependent episodic memory and executive functioning when compared to lower dose supplementation (480 mg/d). In this follow-up of a clinical trial participants will complete online cognition testing and emotion testing.
Illeteracy concerns more than 38% of Réunion Island's people older than 65 years old, which makes it an important risk factor for dementia and a limit to neurocognitive test's administration. The MMSRun is a Mini Mental State Examination's version adapted to illeteracy and Réunionese culture, inspired by Hindi Mental State Examination's work. It allows a way better participation during neurocognitive evaluation, but it has never been validated. This study is a peliminary study to a validation, where the concordance between scores obtained from MMSRun and from the consensual version of Mini Mental State Examination proposed by GRECO (Groupe de Réflexion sur les Evaluations Cognitives) - the only french version validated - on a hospitalized and eldery population will be analyzed.
The objective of this single-center retrospective observational study is to describe cognitive and psychological outcomes and their impact on quality of life after at least 3 months of intensive care unit (ICU) discharge in severe COVID-19 survivors.