How to Interpret SEEG Recordings - On-Demand

SEEG interpretation relies on the compartmentalization of the epileptogenic region into ‘lesional’, ‘irritative’, and ‘epileptogenic’ zones to differentiate interictal and ictal abnormalities. This approach avoids any bias in localization, i.e. causing confusion between lesion and epilepsy, or between spikes and seizures. We will review what these different terms mean, which are the relevant biomarkers that help to differentiate these 3 zones, what are their causal relationship, and how their identification then allows, through their 3D representation, a careful individualized planning of the surgical resection.

Learning Objectives:

• Understand that SEEG interpretation starts with electrode implantation
• Identify relevant paroxysmal activities
• Identify relevant seizure onset patterns
• Understand how to use stimulation