Active clinical trials for "Epilepsy"

This is a single site, non-randomized, prospective, open-label, interventional pilot/feasibility study. Patients recruited will have medically-refractory focal neocortical epilepsy, defined on the basis of presence of focal spikes and (if available) focal seizure onsets originating from the lateral cortical surface of any lobe. All patients and referring physicians will be requested to maintain their current antiepileptic drugs throughout the study with changes after enrollment permitted only to maintain pre-enrollment drug levels, or if clinically necessary. The primary outcome measure will be the change in seizure frequency (seizures/week) as compared to baseline. Patients with medically-refractory neocortical epilepsy will receive cathodal tDCS administered to the seizure focus for 10 sessions over a 2-week period with the allowance of make-up sessions in week three. Subjects will be evaluated at baseline, during the stimulation sessions, and 8 weeks after the completion of the tDCS visits

Depression is one of the most common disorders of mental health, affecting 7-8% of the population and causing tremendous disability to afflicted individuals and economic burden to society. In order to optimize existing treatments and develop improved ones, the investigators need a deeper understanding of the mechanistic basis of this complex disorder. Previous work in this area has made important progress but has two main limitations. (1) Most studies have used non-invasive and therefore imprecise measures of brain activity. (2) Black box modeling used to link neural activity to behavior remain difficult to interpret, and although sometimes successful in describing activity within certain contexts, may not generalize to new situations, provide mechanistic insight, or efficiently guide therapeutic interventions. To overcome these challenges, the investigators combine precise intracranial neural recordings in humans with a suite of new eXplainable Artificial Intelligence (XAI) approaches. The investigators have assembled a team of experimentalists and computational experts with combined experience sufficient for this task. Our unique dataset comprises two groups of subjects: the Epilepsy Cohort consists of patients with refractory epilepsy undergoing intracranial seizure monitoring, and the Depression Cohort consists of subjects in an NIH/BRAIN-funded research trial of deep brain stimulation for treatment-resistant depression (TRD). As a whole, this dataset provides precise, spatiotemporally resolved human intracranial recording and stimulation data across a wide dynamic range of depression severity. Our Aims apply a progressive approach to modeling and manipulating brain-behavior relationships. Aim 1 seeks to identify features of neural activity associated with mood states. Beginning with current state-of-the-art AI models and then uses a "ladder" approach to bridge to models of increasing expressiveness while imposing mechanistically explainable structure. Whereas Aim 1 focuses on self-reported mood level as the behavioral index of interest, Aim 2 uses an alternative approach of focusing on measurable neurobiological features inspired by the Research Domain Criteria (RDoC). These features, such as reward sensitivity, loss aversion, executive attention, etc. are extracted from behavioral task performance using a novel "inverse rational control" XAI approach. Relating these measures to neural activity patterns provides additional mechanistic and normative understanding of the neurobiology of depression. Aim 3 uses recurrent neural networks to model the consequences of richly varied patterns of multi-site intracranial stimulation on neural activity. Then employing an innovative "inception loop" XAI approach to derive stimulation strategies for open- and closed-loop control that can drive the neural system towards a desired, healthier state. If successful, this project would enhance our understanding of the pathophysiology of depression and improve neuromodulatory treatment strategies. This can also be applied to a host of other neurological and psychiatric disorders, taking an important step towards XAI-guided precision neuroscience.

Transcutaneous vagus nerve stimulation (tVNS) has been investigated as a potential treatment for epilepsy with inconsistent results. The combination of transcranial magnetic stimulation with electromyography (TMS-EMG) and electroencephalography (TMS-EEG) allows to investigate the neuromodulatory effect of interventions such as tVNS by evaluating changes in motor evoked potentials (MEPs) and TMS-evoked potentials (TEPs). The goal of this study is to objectively evaluate the effect of tVNS on cortical excitability with TMS-EMG and TMS-EEG. These findings are expected to provide insight in the mechanism of action and help identify more optimal stimulation paradigms. In this prospective single-blind cross-over study, 15 healthy subjects will undergo active and sham tVNS during 60 minutes, using a maximum tolerated stimulation current. Single and paired pulse TMS will be delivered over the right-sided motor hotspot to evaluate MEPs and TEPs before and after the intervention.

The purpose of this study is to compare the standard clinical electroencephalography (EEG) device with a new portable wireless EEG device, further referred to as zEEG, made by ZETO®. zEEG was designed to make EEG studies simpler, safer, more comfortable, faster, and less obstructive for the patient, also easier to set up for technicians. Wireless and battery powered, it uses the latest mobile technology. Contrary to the clinical EEG, this headset does not use any glue between the skin and the electrodes. Minor skin irritation may still occur but much less likely than from the collodion glue used in the clinical electrodes. In addition, the zEEG system does not need any gel to be applied to the skin. The zEEG electrodes are dry and disposable. They have never been used on any other head before. No additional risk is involved with setting it up. In addition to the clinically necessary EEG electrodes or intracranial electrodes for long term monitoring, we will place zEEG on the head to compare the sensitivity of the new device to the traditional device. zEEG is proven to meet the standard of clinical system and received an FDA clearance in 2018. If further clinical tests validate its technical parameters and comfort, it may replace traditional clinical EEG systems.

This trial consists of 2 parts: a double-blinded phase and an open-label extension phase. The blinded phase only will be described in this record. Participants will be randomized in a 4:1 ratio to receive GWP42003-P or matching placebo. The hypothesis is that levels of stiripentol (STP) or valproate (VPA) may be altered (increased or decreased) as a result of using GWP42003-P.

This is a multi-center, open-label, single-arm, phase 4 study to evaluate the efficacy of perampanel added to monotherapy for partial onset seizures with or without secondarily generalized seizures (total seizures).

To evaluate the safety and tolerability of perampanel given as an adjunctive therapy in participants with epilepsy. This study will be continued until perampanel is commercially available.

This study will assess the effectiveness of the ketogenic diet (high-fat, low-carbohydrate, and moderate protein) in treating epilepsy. Two study groups will be comprised of children with epilepsy (0-18 years of age) and whether or not they receive the ketogenic diet - epilepsy/ketogenic diet and epilepsy/non-ketogenic diet.

Haemorrhagic strokes represent about 10-15 % of all strokes and 30,000 cases per year in France. The 30-day death rate ranges from 30 to 55% (50% of deaths occurring within 48 hours). Currently, no urgent medical or surgical treatment has been shown to improve functional or vital prognosis. Clinical epileptic seizures frequency in acute intracerebral haemorrhage has been estimated between 4% and 16% but the occurrence of subclinical epileptic seizures (detected on the electroencephalogram (EEG) only) could be much more frequent (28 % to 40 %). Some studies have suggested that early repeated epileptic seizures may be associated with a worse neurological prognosis. Repeated epileptic seizures occurring in the acute phase may increase brain oedema, worsen, hypoxia and may lead to cellular death in the injured brain tissue. Thus, prevention of early epileptic seizures may improve neurological outcome. However, the efficacy of a systematic prophylactic antiepileptic treatment on clinical and subclinical epileptic seizures has not been evaluated in the setting of intracerebral haemorrhage. The current European guidelines recommend the use of antiepileptic drugs only when epileptic seizures occur. Primary objective: PEACH is a randomized controlled trial aiming at evaluating the impact of systematic prophylactic antiepileptic treatment with levetiracetam versus placebo in acute supratentorial spontaneous intracerebral haemorrhage. The primary endpoint is the occurrence of at least one clinical or electrical epileptic seizure recorded on continuous 48h holter EEG. Secondary Objectives:This study also aims to assess: Ä The efficacy of prophylactic treatment with levetiracetam on the number of EEG seizures, on the total duration of epileptic seizures continuously recorded on EEG, on the occurrence of some paroxysmal EEG patterns, on the number of clinical seizures occurred during 72 hours of diagnosis, on the occurrence of early (day-0 to day-30 ) and late (from day-30 to 12 months) clinical seizures, on the functional prognosis at 3 , 6 and 12 months evaluated by the modified Rankin scale , on the cerebral oedema and mass effect evaluated by comparing the admission brain CT scan with the control CT scan performed at 72 hours, on the neurological status as assessed by the National Institute of Health Stroke Scale at 72 hours , 1 month and 3 months and on the quality of life measured by the Stroke impact Scale at 3, 6 and 12 months. Ä The frequency of side effects related to treatment with levetiracetam (anxiety and depression assessed by the Hospital Anxiety and Depression Scale at 1 and 3 months) Sample Size: 104 patients will be recruited over 2 years.

There is a continuous necessity for the search of new alternatives for safe, affordable and effective noninvasive therapies for patients that are not eligible for focal resective or palliative surgery. The transcranial direct current stimulation (tDCS) therapy has demonstrated to be safe, noninvasive, simple and effective with promising results in case series, case reports and animals models for the treatment of intractable epilepsy. tDCS is a feasible and low cost method to modify cortical excitability in a non-invasive procedure. Its effects on cortical excitability seem to be similar to the effects induced by repetitive transcranial magnetic stimulation. The aim of this study is determine the safety and efficacy in the reduction of the number of seizures (>50%) and epileptiform activity in patients with refractory and multifocal epilepsy after different protocols of tDCS compared with placebo.