Using Micro-filaments to Detect "fast Ripples" and Improve the Identification of the Epileptogenic Zone (NeuroSeizure)

Adrien Peyrache

Status: Enrolling

Conditions: Epilepsy, Refractory

Treatments: Device: macro-micro tetrodes for intracranial recording

Study type: Interventional

Funder types: Other

Identifiers

NCT05254730

2019-5000

Details and patient eligibility

About

record fast ripples with novel intracranial electrodes with micro-tetrodes to improve the identification of epileptogenic zone (EZ) and investigate the neuronal circuits underlying brain dynamics associated with epilepsy

Full description

This study would improve the localization of the epileptogenic zone and reduce the overall duration of monitoring, especially in patients who do not experience a sufficient number of seizures during the implantation period. In addition, it would be possible to use micro-electrodes and propose a better surgical treatment to some patients whose preliminary assessment with macro-electrodes has not provided significant results. Finally, the data collected during this study will help us to further understand pathological brain activity and to describe the neuronal circuitry that gives rise to cortical signals and the relationships between them (from spindles to high frequency oscillations).

Enrollment: 45 estimated patients

Sex: All

Volunteers: No Healthy Volunteers

Inclusion criteria

• inclusion criteria is determined based on the clinical diagnosis of the refractory epilepsy and the admissibility of the patient for the stereoelectroencephalography (sEEG) procedure

Exclusion criteria

• severe psychiatric disorders,
• severe agitation during their crisis
• contraindication for performing an MRI: claustrophobia, a cardiac or neural stimulator, ferromagnetic surgical clips, cochlear implants, intraocular metallic foreign body or in the nervous system,
• contraindication to intracerebral investigation (macro-electrodes): ongoing infection, severe associated pathology (cardiac, pulmonary, renal, hepatic), pregnant or nursing women,
• anti thrombotic ongoing treatment.

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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45 participants in 1 patient group

micro-macroelectrodes

Experimental group

Description:

Patients will be implanted with usually the novel intracerebral micro-macroelectrodes (instead of the regular clinical macroelectrodes). The primary and secondary outcomes will then be assessed.

Treatment:

Device: macro-micro tetrodes for intracranial recording