Instantaneous Relations Between the Activities of Closely Spaced Zones on the Cerebral Cortex

Abstract

Using apparatus which records the electrical activity from 25 implanted electrodes on the cerebral cortex, definite patterns distributed in space and in time were found and are called "figures." Examples of figures evoked in the anesthetized auditory cortex by click stimuli and of a special type of spontaneous figure found in the posterior ectosylvian region are presented. The sterotyped nature and courses of the response figures are shown; the variable nature and courses of the spontaneous figures are also demonstrated.