graphic record of the variation with time of voltages taken from electrodes placed directly on the exposed cerebral cortex
A record of electrical activity derived directly from the cerebral cortex. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ē-lek′trō-kōr′ti-kō-gram Definitions: 1. A record of electrical activity derived directly from the cerebral cortex.
a record of the electrical activity of the cerebral cortex. Cf.