Accession Number:

AD0611370

Title:

VISUAL SYSTEM AND SLEEP,

Descriptive Note:

Corporate Author:

PISA UNIV (ITALY)

Personal Author(s):

Report Date:

1959-01-01

Pagination or Media Count:

15.0

Abstract:

The results of three groups of experiments on the relationships between the visual system and sleep in the midpontine pretrigeminal cat are summarized. The dark discharge of the retina exerts a tonic activating influence on the EEG, possibly by increasing the activity of the ascending reticular system. Reversible patterns of EEG synchronization occur following functional ischemic retinal deafferentation, in the dark adapted animal. In given experimental conditions continuous photic stimulation may produce EEG synchronization. Indirect evidence is given in support of the hypothesis that the abolition of the dark discharge is responsible for these effects. EEG sleep patterns occur only after several hours of repetitive photic stimulation. The mechanism of this EEG synchronizing effect is discussed. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE