[Use of the Cerebral Function Monitor in the study of physiological sleep]

After a brief description of the different phases of physiological sleep, the reasons for employing a new appatus, the Monitor of Cerebral Function, are discussed. This instrument, the first designed for continual monitoring of cerebral activity may be employed in neurophysiology. The results obtained are presented, i.e. the demonstration of a perfect correlation between the Monitor of Cerebral Function recording and the polygraphic methods. The paradoxal and rapid phases of sleep are easily distinguished. The study of paradoxal sleep, both in physiology and in pharmacology, could profit greatly from the use of the MCF due to the great advantage of its ease of operation.