What is the standard electrode placement system used for EEG recording?

The standard electrode placement system used for EEG recording is known as the 10-20 system. This system is widely recognized and utilized in clinical and research settings for its consistency and ease of use in electrode placement on the scalp. It is based on specific anatomical landmarks, determining the placement of electrodes at intervals of 10% or 20% of the total distance between specific points on the skull, such as the nasion, inion, and the preauricular points.

This systematic approach allows for reproducibility and comparability of EEG results across different patients and studies, which is crucial for accurate diagnosis and research outcomes. The 10-20 system effectively covers the entire surface of the scalp for comprehensive electrical activity recording from the brain, ensuring that various regions can be monitored effectively.

Other systems, like the 10-10 or the variations mentioned, introduce additional electrodes or different spacings, which may not be as commonly accepted or standardized as the 10-20 system, thereby limiting their widespread application in routine EEG practices.