[Behavior of rats after immobilization and structural reorganization in the motor cortex and hippocampus].

Behavioral changes and accompanying morphological neuron-glia reorganization in the rat brain were analyzed after long-term immobilization. Wistar rats (n = 23) were stressed by interruptive immobilization, which was carried out within three week daily for 7-8 h. Behavioral immobilization of rats was accompanied by a decrease in the locomotor and exploratory activity in "open field" test and increase in the number and duration of freezing episodes.

[Interaction of immobilization stress and food-getting learning].

The behavioral effects of emotional negative stress (immobilization) were studied in Wistar rats intact and those that had previous positive emotion experience. The food-getting learning has been chosen as positive emotion experience. Animals were trained in food pellet-reaching task by their preferred paw.

Comparison of the behavior of rats after immobilization with structural changes in the motor cortex.

Behavioral and neuronal-glial changes after emotional stress induced by discontinuous (7-8 h per day for one week) immobilization were compared in Wistar rats (n = 20). Immobilization led to increases in horizontal and vertical activity and the duration of "comfort" grooming in the open field test. Morphometric measurements demonstrated significant increases in the density of hypoxic neurons in the motor area of the right hemisphere of experimental animals as compared with measures in controls.

[On a possibility of understanding over the limits of imagination].

Intellectual abilities of mathematicians led them to the creation of some number systems, among which the set of real numbers occupies a special place. A visual representation which would distinguish between the rational number system and the real number system was not found. Nevertheless, the set theory of real numbers was understood and accepted by mathematicians.

[Correlation of the rat behavior after immobilization with structural reorganization in the motor cortex].

Behavioral changes and accompanying morphological neuron-glia reorganization in the rat brain were compared after emotional stress. Wistar rats (n = 20) were stressed by the interrupted immobilization, which was carried out during one week 7-8 h daily. Behavioral immobilization of rats was accompanied by an increase in horizontal and vertical locomotors activity and in duration of the III and IV phases of grooming ("comfortable" grooming) in the "open field" test.