How to conduct EEG recordings—A video-based educational resource

In this multimedia teaching material, we address the following learning objective of the ILAE's competency-based curriculum¹: “Demonstrate knowledge on how to conduct EEG recordings, including technical requirements (e.g., mounting electrodes, using filters, amplifiers, electrode arrays, etc.).”

Standardized EEG electrode positioning is paramount both in the clinical and research realms. The classical 10–20 system, initially developed by Jasper and colleagues in the 1950s,² has been widely used as it allows a consistent and replicable method of recording EEG.³ It was not until 2017 that the International Federation of Clinical Neurophysiology (IFCN) proposed an updated standardized EEG electrode array.⁴

This 25-electrode array⁴ includes inferior temporal electrodes thus covering the anterior and basal areas of the temporal lobes—which are the most frequent source of epileptogenicity (Figure 1). Electrodes are placed in accordance with 20% and 10% positions of standardized measurements from skull anatomical landmarks (Figure 2). We illustrate this topic by presenting two educational videos: a manikin demonstration (Video 1) and a live demonstration (Video 2).

CONFLICT OF INTEREST STATEMENT

F. A. Nascimento is an Associate Editor for Epileptic Disorders. S. Beniczky is an Editor-in-Chief for Epileptic Disorders. M. Salazar, J. Colonetti, and D. Schomer report no disclosures relevant to this article.