ELPOS3 provides electrode positions in 3-D according to FEF [YX,code]=elpos3(Label); see also: ELPOS Reference(s): [1] FEF: File Exchange Format for Vital Signs - Normative Annex A (Normative). The Medical Data Information Base (MDIB), Nomenclature, Data Dictionary and Codes Table A.6.3: Nomenclature and Codes for Electrode Sites for Electroencephalography according to the International 10-20 system. CEN/TC251/PT-40 (2001)