PMID: 7941717May 1, 1994Paper

The correlational characteristics of the electrical activity of the rabbit brain in a state of hunger

Zhurnal vyssheĭ nervnoĭ deiatelnosti imeni I P Pavlova
R A Pavlygina, Iu V Liubimova


Motivational state of hunger, created in rabbit by alimentary deprivation, leads to an increase of coherent connections between potentials of the neocortex. In the state of hunger a complex mosaic of changes of intercentral relations of the cortical and subcortical electrical processes arises, the character of spatial potential interrelations depends on the level of alimentary motivation, created by deprivation of different duration. At daily deprivation coherence values increase in the slow-frequency band between potentials of the lateral, ventromedial hypothalamus, the medial preoptic area, and potentials of the orbitofrontal cortex. Coherence decreases between potentials of the ventromedial hypothalamus, the medial preoptic area and potentials of the sensorimotor 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 cortices increases, and decreases with the potentials of the sensorimotor-1 cortex. Coherence between potentials of the ventromedial h...Continue Reading

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