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The five percent electrode system for high-resolution EEG and ERP measurements
1Department of Clinical Neurophysiology, Institute of Neurology, University Hospital Nijmegen, P.O. Box 9101, NL-6500 HB Nijmegen, The Netherlands. roberto@mbfys.kun.nl
Objective:
A system for electrode placement is described. It is designed for studies on topography and source analysis of spontaneous and evoked EEG activity.
Method:
The proposed system is based on the extended International 10-20 system which contains 74 electrodes, and extends this system up to 345 electrode locations.
Results:
The positioning and nomenclature of the electrode system is described, and a subset of locations is proposed as especially useful for modern EEG/ERP systems, often having 128 channels available.
Conclusion:
Similar to the extension of the 10-20 system to the 10-10 system ("10% system"), proposed in 1985, the goal of this new extension to a 10-5 system is to further promote standardization in high-resolution EEG studies.