View clinical trials related to Cognition Disorders.
Filter by:Alzheimer's disease (AD) is a progressive and fatal neurodegenerative disease that is manifested by severe cognitive impairment mainly from late life (>65 years). Clinical studies have shown that both systemic inflammation and cortical and hippocampal hyperactivity are features present in patients during the early stages of the disease. In this project we will seek to relate the levels of the proinflammatory cytokines interleukin-1beta, interleukin-6 and tumor necrosis factor-alpha with the level of cortical hyperactivity evaluated with the electroencephalographic changes induced by the GABAergic anesthetic propofol in older adults undergoing elective surgery.
This clinical trial aims to learn about the therapeutic value of Methylprednisolone, a well-known immunosuppressant, on cognitive deficits in patients with post-COVID-19 syndrome (PCS). The main questions it aims to answer are: 1) Does Methylprednisolone improve memory function in PCS patients compared to placebo? 2) Does Methylprednisolone improve other patient centered outcomes in PCS patients such as fatigue, mood and quality of life compared to placebo? 3)What are the side effects of Methylprednisolone in this patient population, and how common are they? Participants in this study will be patients with PCS and cognitive deficits, who will be asked to participate for 52 weeks. They will be randomly assigned to one of two groups: One group will receive Methylprednisolone once daily for six weeks, with a dosage reduction after week 4. The other group will receive a matching placebo once daily for six weeks, following the same titration regimen to ensure blinding. Participants will attend outpatient follow-up visits in weeks 8 and 20, with a final telephone follow-up after 52 weeks. Clinical examinations and safety monitoring will be conducted during the treatment phase. This study's results may help develop more effective therapies for this condition.
Systemic lupus erythematosus (SLE) is a chronic autoimmune and inflammatory disease. The pathogenesis of SLE results from interactions between genes, hormones, and the environment; however, the exact etiology is unknown. SLE can affect many organs and systems, including the musculoskeletal, hematological, renal, neuropsychiatric, cardiovascular and pulmonary systems, and skin. Non-specific general complaints such as malaise, fatigue, arthralgia, anxiety, depression, fever, and weight loss are evident at the onset of the disease and during the activation periods. Patients experience hopelessness due to the complexity of the symptoms and the chronic and progressive nature of the disease, and they experience deterioration in their quality of life due to the interaction of anxiety and depression findings with other symptoms. SLE is a difficult disease to manage because of the different organ and system involvement processes. In addition, these symptoms of the disease and the nature of chronic pain, including central sensitization, cause it to accompany a process that is affected by the mood of the person. Some patients present to a rheumatologist with mild symptoms, while others may present with severe, life-threatening symptoms. The onset of the disease before the age of 18 is defined as childhood onset (juvenile). Childhood-onset SLE accounts for approximately 1/5 of SLE patients. It is known that the main mechanism in the formation of the disease is the production of more than one autoantibody. Although childhood SLE (jSLE) appears to be basically the same disease with similar etiology, pathogenesis, and laboratory findings as in adults, there are differences in the frequency and severity of clinical manifestations. In this respect, the clearest finding is that children with SLE have greater disease severity and earlier disease-related organ damage than adults with SLE. Studies on the disease show that patients with jSLE have not only physical but also cognitive effects. The aim of our study is to examine the effects of exercises applied with a dual-task approach on patients' physical and cognitive status in jSLE cases.
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
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.
Inattentiveness and impulsivity in healthy adults and individuals with attention deficit hyperactivity disorder (ADHD) diminish these individuals' quality of life. Cortical hypometabolism has been hypothesized to contribute to inattentiveness in ADHD. Transcranial photobiomodulation (tPBM) is a safe and non-invasive modality for activation of the prefrontal cortex. tPBM in healthy adults has been shown to augment brain oxygenation, cognition, and mood. The cognition-enhancing effect of tPBM on sustained attention in adults with ADHD remains unstudied. The investigators will evaluate whether tPBM administration to adults with and without ADHD can improve their attention. Each participant will be screened for eighteen criteria based on the Diagnostic and Statistical Manual (DSM-IV, text revised), using the validated instrument Adult ADHD Self-Report Scale (ASRS-v1.1). Blinded participants will be randomized into (I) Active-tPBM or (II) Sham-tPBM groups. After undergoing an 8-minute administration of Sham or 1064 nm tPBM to the lateral and medial right prefrontal cortex, each participant will complete a 14-minute, computer-based Conner's continuous performance task-3 (CPT-3). The investigators will examine whether adults with and without ADHD who receive Active-tPBM improve in measures of inattention, impulsivity, sustained attention, or vigilance compared to the Sham-tPBM group. Cognitive assessments of attention like the CPT-3 may evaluate the efficacy of tPBM to increase cortical metabolism in healthy adults and individuals with conditions like ADHD. The investigators anticipate their investigation will be a starting point for more sophisticated studies that focus on the implications of tPBM on cognition.