Memory Disorders

This ClincialTrials.gov record originally corresponded to the protocol approved under IRB # 202370. The study was expanded to include stimulation and recordings approved under new IRB #211037. The participant data originally acquired from IRB# 202370 will be included in this new record: This study seeks to better understand the neural activity underlying neuro cognitive disorders. Resting state local field potential recordings will be collected from medically refractory epilepsy patients implanted with depth electrodes for seizure localization, and metrics of neural activity will be correlated with psychiatric symptoms as measured from questionnaires. Subjects will also participate in neuro cognitive tasks while neural recordings are performed, and/or receive neural stimulation through implanted depth electrodes. A better understanding of disordered neural activity underlying neuropsychiatric disorders may additionally contribute to novel methods for diagnosing, treating, and preventing these diseases.

This ClinicalTrials.gov entry corresponds to the Neural Basis of Human Working Memory protocol approved under Vanderbilt University Medical Center IRB #251231. This study investigates the neural activity underlying human working memory, via local field potential changes (macro level) and/or single neuronal spiking changes (micro level) from depth electrodes placed for invasive seizure monitoring. Subjects will complete neurocognitive tasks while neural recordings are collected. Some patients will complete neurocognitive tasks while stimulation is applied via depth electrodes. Further understanding the neural activity changes underlying normal and impaired working memory may help to identify novel diagnostic methods and treatments for impaired working memory and may support the use of stimulation for treatment of memory disorders.

This study will compare smartphone usage data between three groups of patients diagnosed with either a memory complaint, mild cognitive decline, or Alzheimer's disease.

This study investigates the anatomical and physiological basis of spatial scene recognition memory in patients with temporal lobe epilepsy and temporal lobe lesions. Standard neuropsychological tests are insensitive to important memory deficits experienced by patients, particularly in spatial/scene memory, recollective experience, and familiarity processing. Using a validated virtual tour paradigm, the study examines how familiarity-based recognition and recall of spatial scenes relate to specific brain structures. In Aim I, a large cohort of patients with varied temporal lobe lesions at Emory University undergoes the virtual tour task with voxel-based lesion-symptom mapping to localize necessary brain regions. In Aim II, scalp event-related potentials and eye tracking in healthy participants at UC Davis characterize the temporal dynamics and lateralization of scene recognition. In Aim III, intracranial EEG recordings (including local field potentials and single-unit activity) in epilepsy surgery patients at UC Davis determine the precise network dynamics underlying spatial scene familiarity and recall. The long-term goal is to improve the prediction and prevention of cognitive morbidity from epilepsy surgery by providing a more complete model of spatial recognition memory circuits.

In this study the participants can be recruited via scheduled consultation and external institutions (associations, senior club..). Neuropsychological assessment will be realize to determine presence or absence of neurodegenerative disease. Study test is ecological MAI. This test are assigned in two groups (with or without neurocognitive disorders).

Episodic memory (EM) is a neuropsychological marker of Alzheimer's disease (AD) (Thomas-Anterion, 2006). Current tests for its assessment do not take into account the identity and emotional aspects of memory (Van der Linden et al., 2018). However, there are models that integrate links with identity, self-awareness and experience. Pause et al. (2013) propose criteria to create ecological tools, including consideration of the emotional valence of memories and the spatio-temporal context of acquisition. In line with these criteria, we have developed a new tool: the NEM (New evaluation of Episodic Memory). Preliminary studies show different response profiles on the NEM among patients (Launay et al., 2023). We now want to evaluate the relevance of this tool in the differential diagnosis of AD.

Bio-Hermes-002 is a 120-day cross-sectional study that will result in a blood, CSF, retinal, digital, MRI, and PET brain imaging biomarker database that can be used to determine the primary objective. Digital biomarkers and blood-based biomarkers will be tested to determine whether a meaningful relationship exists between biomarkers alone or in combination with tau or amyloid brain pathology identified through PET images.

This study intends to evaluate the feasibility and the effectiveness of an innovative and integrated nutrition-based intervention addressing key modifiable risk factors for dementia while meeting participants' preferences for nutrition-related sessions. The intervention will include lifestyle group sessions regarding nutrition education and physical activity, individualized cognitive training at home, as well as clinical nutrition consultations.

The purpose of this study is to test the use of a screening tool to detect changes in the eye that are associated with Alzheimer's disease in adult participants with memory issues. For each participant, the study will last up to one month and requires one visit to the research site.

The purpose of this study is to assess the ability of the home-based intervention, HOBSCOTCH-CA, to improve the quality of life and cognitive function in Service Members, Veterans and civilians who are survivors of brain cancer or a brain tumor (CA participants). This study will also assess the ability of the HOBSCOTCH-CA program to improve quality of life in caregivers of patients with brain cancer/tumor and to reduce caregiver burden. Enrolling with a Caregiver is optional for CA participants. Investigators will compare two groups of CA participants and their Caregiver (enrolling with a Caregiver is optional): one who receives HOBSCOCTCH-CA immediately (Group 1) and another group that will receive HOBSCOTCH-CA (Group 2) after a 3-month waiting period. Participants will be in the study for about 6 months total. HOBSCOTCH-CA involves 45 to 60 minute one on one virtual sessions with a certified Cognitive Coach including a "pre" program session and 8 weekly sessions thereafter. Participants will learn about problem solving therapy and mindfulness or relaxation training. CA participants are asked to do short homework assignments and keep a brief daily diary on a smart phone app. All participants complete study questionnaires or surveys at enrollment, 3 months later and at 6 months (at the end of the study).

The purpose of this study is to assess the ability of the home-based intervention, HOBSCOTCH-MS to improve the quality of life and cognitive function in Service Members, Veterans and civilians who have multiple sclerosis with cognitive and memory problems (MS participants). This study will also assess the ability of the HOBSCOTCH-MS program to improve quality of life in caregivers of patients with multiple sclerosis and to reduce caregiver burden. Enrolling with a Caregiver is optional for MS participants. Investigators will compare two groups of MS participants and their Caregiver (enrolling with a Caregiver is optional): one who receives HOBSCOTCH-MS immediately (Group 1) and another group that will receive HOBSCOTCH-MS (Group 2) after a 3-month waiting period. Participants will be in the study for about 6 months total. HOBSCOTCH-MS involves 45 to 60 minute one on one virtual sessions with a certified Cognitive Coach including a "pre" program session and 8 weekly sessions thereafter. Participants will learn about problem solving therapy and mindfulness or relaxation training. MS participants are asked to do short homework assignments and both MS and Caregiver participants are asked to keep a brief daily diary on a smart phone app. All participants complete study questionnaires or surveys at enrollment, 3 months later and at 6 months (at the end of the study). After completing the intervention, MS Participants and their Caregivers may also participate in an optional one-time Key Informant Interview for qualitative analysis in an effort to further adapt and improve the HOBSCOTCH-MS in the future.

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.

The objective is to understand how amygdala activation affects other medial temporal lobe structures to prioritize long-term memories. The project is relevant to disorders of memory and to disorders involving affect and memory, including traumatic brain injury and post-traumatic stress disorder.

This project intends to track and evaluate whether post-ICU syndrome will occur 7 days, 1 month, 3 months and 6 months after ICU patients are transferred out of the ICU through a longitudinal study, apply the latent category growth model to identify different trajectory patterns of post-ICU syndrome in critically ill patients, and use modern machine learning models to build an early warning model of the trajectory patterns of post-ICU syndrome.

A regional, single-center, prospective, observational academic cohort will follow subjects who previously participated in the INSIGHT study and who agree an extension of their follow-up in the INSIGHT-2 research for additional 5-6 years. An annual multimodal evaluation (cognitive, oculomotor, biological and neuroimaging) will be proposed in order to describe the natural history of preclinical Alzheimer's disease (AD). The primary endpoint is the conversion to the symptomatic stage in subjects at risk, identified by positive amyloid staining (A+) on florbetapir positron emission tomography (PET) imaging. The size of the cohort is estimated to around 240 participants (61 A+ subjects) among the 318 participants included in the main cohort (88 A+ subjects). The follow-up in the INSIGHT-2 cohort will be lightened compared to that of the main cohort with an annual frequency of visits rather than a six-monthly one.

The Interventions for Brain Health Virtual Reality Study is a NIH-funded clinical research trial at the University of California San Diego (UCSD) Health under the supervision of the study principal investigator Dr. Judy Pa. The overarching goal of this trial is to use a novel virtual reality (VR) based intervention that simultaneously engages physical and cognitive activity aimed at improving brain health and cognition in older adults. The investigators will compare 3 types of interventions: physical activity, VR cognitive activity, and combined VR physical and cognitive activity over 16 weeks to evaluate physical and brain health changes.

The Inserm NeuroPresage team has been using MRI for more than 20 years in the study of normal ageing and memory pathologies to further the understanding and the characterization of early diagnosis and the cerebral substrates of cognitive deficits in patients, particularly in the context of neurodegenerative diseases. Two years ago, a new 3T MRI camera was installed at the Cyceron centre. It is more efficient and should make it possible to obtain better quality images and/or to reduce the time required to acquire these images. In this context, it seems important to test the different sequences that we classically use in our studies, or that we plan to implement in our next studies (learning and text retrieval fMRI task), in order to optimize them, with a view to integrating them in our future studies.

The Alzheimer's disease or related disorders (ADRD) are among the most disabling diseases because of their main features such as cognitive impairment, loss of functional autonomy and behavioural disorders. In absence of current curative treatment, the identification of the predictive risk factors of progression of the disease, evaluated through its main symptoms, represents a major stake of public health. The Investigators aim at developing a regional database, which includes the patient medical records on a prospective basis, in collaboration with the medical and administrative staff and with the University hospital computer science departments. The main objective is to study the predictive factors associated with change in functional autonomy level, measured every 6 to 12 months in centres across Region Auvergne Rhone-Alpes in France. The real-life study population will consist in about 5400 patients with ADRD. The inclusion period will be of 3 years, the length of follow-up of each patient will be of 10 years max for a total study length of 13 years.