[The neuronal ensembles of the brain].

The conclusion about availability of two types of neuron ensembles in the central nervous structures was made on the basis of proper experimental studies and appropriate literature data analysis. The first is presented by neurons functional cooperation (Hebbian ensembles) formed during learning process on the basis of synchronization by high-frequency oscillator activity. The second is presented by morphological-and-functional structures (Kogan's neuron ensembles) formed during neurogenesis process and genetically destined for biologically valuable patterns recognition.

[Dynamics of the information characteristics of the chemical composition of developing chick embryo organs].

Contents of 7 microelements in the yolk sac and liver have been studied. In the yolk sac wall, entropy decreases, and the organization degree increases; these phenomena correlate well with the known decrease in intensity of heat production and respiration during embryogenesis. The prefetal period of the embryonic development is characterized by entropy decrease in the liver; during the fetal period entropy remains nearly at a constant level.