Overview

The objective of this prospective interventional monocentric clinical investigation is to evaluate the feasibility and performance of the flexible high-density SOFT ECoG electrode grids, manufactured by Neurosoft Bioelectronics SA (test device; TD), in comparison to regular high-density electrode grids (ADTech, CE-marked) (control device; CD) routinely used at the investigation site during epilepsy surgery.

Subjects will undergo ≥ 2 additional intracranial recordings pre- and post-resection with the TD next to the standard recordings with the CD during ECoG-tailored epilepsy surgery.

Eligibility

Inclusion Criteria:

• Age ≥18 years at the time of enrolment
• Lesional epilepsy (incl. mesial temporal sclerosis) that is considered a candidate for intra-operative high-density grid recordings (incl. patients who underwent stereoelectroencephalography (SEEG) preceding resective surgery)
• Provided informed consent for study participation by the subject

Exclusion Criteria:

• Prior brain surgery (excl. SEEG)
• Occipital lesion
• Multiple epileptic foci or suspected dual pathology
• Surgeries involving a disconnection, or hemispherectomy.
• Planned awake surgery and/or functional recordings
• Use of anticoagulants that cannot be discontinued during the perioperative period, or a factor XIII deficiency or any other haematological disease
• Active participation in another investigational device study
• Any other condition that in the opinion of the investigator may adversely affect the safety of the subject or would limit the subject's ability to complete the study.
• Insufficient understanding of Dutch language.