Despite an extensive literature dealing with subarachnoid hemorrhage, we have been unable to find any electroencephalographic studies of this disease. The occurrence of spontaneous bleeding into the subarachnoid space of a patient already in the hospital who had been under observation for a period and had had a previous electroencephalogram afforded an unusual opportunity to follow the electrophysiologic changes which occurred. The electroencephalographic data furnish cogent evidence that significant changes occur within the brain. These data corroborate the clinical and pathologic evidence that such changes do occur within the brain in cases of subarachnoid hemorrhage, even when the source of bleeding is not intracerebral.
REPORT OF CASE
—M. H., a man aged 50, was admitted to the Montefiore Hospital on March 4, 1943, with complaints of difficulty in walking, pain in the left arm and a feeling as though "the arm were broken and the cracks were trying to