Pathophysiological Studies on the EEG Abnormalities in Patients with CNS Disease with Special Reference to Computer Topographic Display of Delta Wave

Abstract

A new type of computer method for displaying the EEG activities was presented. Potential distribution over the surface of the head were printed out on line printers of each frequency band separately as shown on topographic maps. Using this method, the effects of sleep, and dexamethasone on spatial features of the EEG activities in patients with slow wave types of abnormality were reviewed in correlation to the computerized tomographic scan from the functio-anatomical aspects.