Smolenko N. Neurophysiological features of the effect of positive emotional reinforcement system on processes of waking-sleep in ontogenesis.

The object of study: emotions and waking-sleep cycle in ontogenesis. The aim of research: the study of the positive emotional reinforcement effect on a structure of the waking-sleep cycle at rats in different periods of ontogenesis. The methods of research: neurophysiological, electrophysiological, behavioral, morphological, spectral analysis of brain biopotentials, statistical. The results of study, scientific novelty: It is set that activating of the system of positive emotional reinforcement at the rats of 1-monthly age carries out a modulating effect on the brain desynchronizing systems, which provide waking and paradoxical sleep; in 3-monthly rats with advantage of waking in the structure of the waking-sleep cycle it causes restructuring of the cycle with suppression of waking and activating of sleep; in 12-monthly rats the self-stimulation influences on the mechanisms of providing waking and paradoxical sleep. The adaptation parameters of structural changes of the waking-sleep cycle are improvement of sleep rhythm at rats of 1- and 12-monthly age, electrographic displays of the transitional states from slow sleep to paradoxical one at rats of 3-monthly age, and also paroxysmal activity on EEG of waking-sleep at rats of all age groups. It is shown facilitating influence of the self-stimulation on the likable providing of cardiovascular functions. The sphere of application: neurophysiology, psychophysiology, psychoneurology, cardiology.