The Electroencephalogram in Cerebrovascular Disease

A SURVEY of the literature yields little information on the electroencephalogram of patients with cerebrovascular disease (cerebral thrombosis, cerebral hemorrhage and cerebral embolism). Although Gibbs and Gibbs, in their Atlas of Electroencephalography, 1 reported 1 case each of cerebral arteriosclerosis, cerebral embolism and multiple cerebral hemorrhage, we found no publication dealing specifically with the electroencephalograms of this important group of patients. Because of this fact, and also because such patients so frequently present a problem of differential diagnosis from expanding intracranial lesions, the electroencephalograms of 95 patients with a disturbance diagnosed as cerebrovascular disease were studied. The characteristics of these records were determined; their possible use as an aid in differential diagnosis was investigated, and an attempt was made to correlate the electroencephalogram with the clinical findings. TECHNIC Standard records were taken with a three channel Grass electroencephalograph, using eleven electrodes, as follows: one vertex electrode (placed in the midline,