Active clinical trials for "Epilepsy"

The purpose of the initial screening study is to find out if immune problems are an unrecognized cause of epilepsy in some patients. This study consists of a single blood sample, which will be tested for possible immune abnormalities. If enough patients are found who show immune abnormalities, those patients who are still having uncontrolled seizures will be invited to participate in a study of immune treatment with a compound called intravenous immunoglobulin (IVIG). The study hypothesis is that a significant proportion of the young-onset, refractory, image-negative, partial-onset epilepsy population have an underlying autoimmune disorder, and many of these patients will respond to immune therapies, including IVIG. At present, the importance of immune abnormalities in causing epilepsy, and the proper treatment when they are found, are both poorly understood. The investigators hope that this study will help us understand the cause of some cases that are difficult to treat.

This study will give important information about long term consequences of temporal lobe epilepsy surgery on cognition (memory, language, concentration etc), psychiatric function and quality of life.

We plan a prospective multisite trial to determine the clinical utility of BioEP in the context of diagnostic decision making. We will use findings from the trial to improve user experience of our Neuronostics platform (the tool which clinicians use to obtain a BioEP score from EEG and the aligned report). The data coming from the trial will also enable us to iterate the BioEP algorithms and so improve future performance.

The goal of this observational study is to compare clinical utility between Remote EEG Monitoring (REMI) and conventional EEG in patients (6 and older) that are undergoing EEG recording in a hospital as part of their routine clinical care. The main question[s] it aims to answer are: What is the concurrence of diagnosis made by epileptologist using REMI and full-EEG signals. What is the proportion of participants experiencing as seizure at the time of sensor placement, compared between REMI sensor placement and full-EEG placement. Participants will wear REMI and conventional EEG electrodes at the same time.

The purpose of this research study to investigate, classify, and quantify chronic cardiac rhythm disorders in three groups of patients with epilepsy (intractable focal epilepsy, controlled focal epilepsy and symptomatic generalized epilepsy). Patients with epilepsy have a higher risk for cardiac complications than the general population. With this study, we aim to understand more about these potential complications in patients with epilepsy and assess if treatments for cardiac problems should be evaluated more carefully in patients with epilepsy.

Sudden unexpected death in epilepsy (SUDEP) is regarded as a leading cause of premature death in epilepsy patients. We aim to capture the whole process of SUDEP and near-SUDEP occurrence in patients with epilepsy, and expolre video-electroencephalograph (V-EEG) changes and marker. A Chinese multicenter study was carried out to determine electroencephalo-graph marker related to SUDEP to provide a scientific basis for the prevention of SUDEP in patients with epilepsy.

To assess the magnitude and duration of reduction in RNS recorded Detections and Long Episodes following intranasal administration of Valtoco®. All participants will have been implanted and treated with an RNS system for clinical purposes and regularly upload Detection and Long Episode data on a regular basis as part of regular clinical treatment. Participants will come to the clinic and be administered a single dose of Valtoco® via nasal spray. RNS recorded Detections and Long Episodes before and after Valtoco® administration will be compared. This is a pilot study, so all outcomes are exploratory.

The investigators record the outcome of patients whose surgery involved intraoperative neurophysiological monitoring Trial with surgical intervention

Epileptic seizures arise from neuronal defects that often alter the capacity of the brain to process sensory information. During absence seizures, a frequent epileptic syndrome in children, the normal conscious and perceptual processes are temporarily interrupted. This is the result of abnormal synchronized neural activities in the thalamo-cortical loops, leading to bilateral spike-and-wave discharges (SWDs) in the cortical electroencephalograms (EEGs). The brain mechanisms underlying the lack of sensory experience during absence seizures are disputed. Based on preliminary data, the investigators hypothesize that the alternation of 'spike' and 'wave' patterns during seizure could cause a time-to-time inconstancy in cortical responsiveness, preventing conscious perception. Using a real-time closed-loop stimulation system, the investigators will research how the S- and W-patterns specifically alter the sensory-evoked responses in the EEG. During a standard EEG, visual stimulations will be applied between and during absence seizures to test the hypothesis that repeated sensory stimuli, applied with an appropriate timing relative to the seizure-related oscillatory cycle, could negatively interfere with the regenerative network mechanisms involved in the occurrence of SWDs. The completion of this project should permit to unveil a new neuronal mechanism supporting the lack of conscious experience during absences and pave the way for new clinical non-invasive strategies to interrupt ongoing seizure activity.

The investigators want to characterize high-frequency oscillations (HFOs) in intracranial recordings, which may occur as markers of epileptogenic tissue and also under physiological stimulation. The investigators want to show that recording of high-frequency oscillations (HFOs) is feasible in our project population both intraoperatively and during presurgical physiological conditions.