Accession Number:

AD0292999

Title:

ELECTROPHYSIOLOGICAL STUDY OF THE NEURAL MECHANISMS OF SLEEP

Descriptive Note:

Corporate Author:

GENOA UNIV (ITALY)

Personal Author(s):

Report Date:

1962-10-01

Pagination or Media Count:

1.0

Abstract:

The aim of the research was to study with electrophysiological techniques the neural mechanisms underlying sleep. The findings obtained were summarized two phases or stages of sleep having very well distinguished electrocortical and somato-visceral characteristics can be recognized in the cat the desynchronized activity present during the second phase of sleep, or deep sleep, seems to result from a depression of the subcortical EEG synchronizing systems produced by the action of an inhibitory mechanism adequate electrical excitation of the brain stem reticular formation is followed by the appearance of deep sleep a transverse unilateral hemisection of the brain stem at pontine level prevents the appearance of the electrocortical rhythms of deep sleep on the ipsilateral cerebral hemisphere and the same transection decreases or even suppresses deep sleep itself. Findings lead to the following conclusions the second phase of sleep, or deep sleep, has an active origin, being produced by an inhibitory or sleep-inducing influence and the inhibitory or sleep-inducing influence responsible for deep sleep takes origin from the caudal brain stem, probably from structures of the rostral half of the pons. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE