CORRELATIVE CHARACTERISTICS OF THE BRAIN ELECTRICAL-ACTIVITY OF RABBIT IN THE STATE OF HUNGER

Motivational state of hunger, created in rabbit by alimentary deprivat ion, leads to an increase of coherent connections between potentials o f the neocortex. In the state of hunger a complex mosaic of changes of intercentral relations of the cortical and subcortical electrical pro cesses arises, the character of spatial potential interrelations depen ds on the level of alimentary motivation, created by deprivation of di fferent duration. At daily deprivation coherence values increase in th e slow-frequency band between potentials of the lateral, ventromedial hypothalamus, the medial preoptic area, and potentials of the orbitofr ontal cortex. Coherence decreases between potentials of the ventromedi al hypothalamus, the medial preoptic area and potentials of the sensor imotor cortex. Synchronization of electrical processes of the lateral and ventromedial hypothalamus does not significantly change. At 2-day deprivation changes of the cortical coherence become less regular than at daily deprivation, Synchronization of the electrical processes of the lateral hypothalamus and the orbitofrontal, sensorimotor-2 cortice s increases, and decreases with the potentials of the sensorimotor-1 c ortex. Coherence between potentials of the ventromedial hypothalamus a nd the orbitofrontal cortex, on the contrary, decreases, and increases with the potentials of sensorimotor-1 cortex. Synchronization of elec trical activity of the lateral and ventromedial hypothalamus attains t he level of 100% manifestations. It the state of hunger interhemispher ic asymmetry appears in the parameters of coherence due to more regula r intensification of interrelations of electrical processes in the lef t hemisphere.