Abstract
Proceeding from the author's earlier references to the great influence of the caudal portions of the brain stem and vestibular afferentation upon the cortical synchronization it is suggested that the portion of the bridge of Varolius with which Moruzzi and his collaborators associate the mechanism of synchronization possesses certain properties ascribed to it in view of the loaclization of Bechterew's superior vestibular nuclei within it. Chronic experiments on nonanesthesized cats with local electrolytical destruction of the superior and medial vestibular nuclei and sharp cortical synchronization following the exclusion of nuclei have confirmed this suggestion. Apparently, the superior (and medial) vestibular nuclei are the stage whose absence plays a decisive role in the excitation of the mechanism of cortical synchronization both directly and through the reticular formation of the given level of the brain stem.
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