[Spontaneous spike activity of neurons of the isolated cerebral cortex in the rabbit].

Using the method of correlation analysis, spontaneous impulse activity of isolated cortex (IC) was studied in late terms of isolation (6-9 weeks). It was shown that most of IC neurones (about 70%) had a burst-group type of activity characterized by alternation of irregular long periods of activation (up to a few seconds) and similarly irregular prolonged periods of inhibition. A scheme of spontaneous impulse activity formation in IC is suggested.