Anatomic correlates of the ten-twenty electrode placement system in infants.

Abstract The relationships of the standard ten-twenty electrode placement system to the infant cerebral cortex were studied in seven cadavers at the time of autopsy. In contradistinction to previous studies, the average location of our central electrode (C 3,4) was over the postcentral gyrus. In addition, our entire temporal line of electrodes (F 7, 8: T 3, 4: T 5, 6) was more inferiorly placed than that of a previous study. The inferior frontal electrode actually lay inferior to the frontal lobe in most instances. Despite meticulous measurement of electrode positions, a discrete but definite variability of anatomic correlation between brains and between hemispheres of the same brain was found for most electrode positions.