O Iu Dergacheva

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Influence of electrical stimulation of the medial preoptic area of cats on characteristics of paradoxical sleep and activity of medial preoptic neurons were studied in the course of sleep-waking cycle. Low-frequency stimulation of this structure in the state of slow-wave sleep evoked short-latency electrocortical desynchronization and induced transition to(More)
The nucleus pontis oralis contains several populations of neurons showing distinct sleep-waking discharge patterns. PS-on, PS-off cells, and neurons that discharged in association with phasic movements during paradoxical sleep and/or waking, were found. The findings suggest that different populations of the nucleus pontis oralis neurons take a distinct part(More)
Frequency and patterns of activity of 106 neurons in the lateral preoptic area of unanesthetized cats were studied under conditions of indolent head fixation. It was shown that this structure contains two somnogenic neuronal populations with different functions. Neurons increasing their discharge frequency during transition from active to quiet wakefulness(More)
Posterior hypothalamus was found to take part in the inhibitory control of the paradoxical sleep executive mechanisms responsible for the ECoG desynchronisation and phasic events. Functional activity of the posterior hypothalamus seems to be at its lowest during the paradoxical sleep stage as characterised by phasic events and the ECoG desynchronisation,(More)
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