Significance of amplitude asymmetry in the electroencephalogram

Abstract

From a study of 200 EEGs with amplitude asymmetry and 200 normal recordings it was found that amplitude asymmetry may occur in normal subjects, often has no pathologic significance in the dominant occipital lobe, and is not limited to the occipital region but often indicates a lesion when found elsewhere. The side of depressed amplitude usually corresponds with the side of the lesion.