[Magnetic field and alcohol addiction].

The effect of weak disturbance (up to 300 microT) of natural magnetic field on the development of alcohol addiction in rats exposed to information load (training in a complex maze) was studied. It was found that learning against the background of inhomogenous magnetic field led to 3-13-fold increase of alcohol intake in 100% of rats. At the same time, under conditions of the same information load against the background of natural magnetic field, this phenomenon was observed in 45% of animals and was less expressed (a 2.

[Response of sensorimotor cortex neurons to weak disturbances of the magnetic field in Wistar rats. Cytochemical study].

The influence of weak disturbances (up to 300 microT) of natural magnetic field on the protein metabolism in neurons of sensomotor cortex (layers III and V) in Wistar rats upon learning in a complex maze was studied. It was found that sensomotor neurons were very sensitive to weak disturbances of magnetic field. The protein content increased, while the nucleus-cytoplasm ratio and osmotic state of neurons remained unchanged.

Cytochemical parameters of synaptic neurons in rats with different abilities to learn a food-procuring habit.

The characteristics of protein metabolism associated with cognitive activity were studied in neurons of layers III and IV of the sensorimotor cortex of rats, using two groups of Wistar rats. Regardless of the success of learning, information loading was most clearly reflected in the associative neurons of layer III. In rats with poor learning ability, these neurons showed increases in nuclear and cytoplasmic size, along with increases in protein concentration and content.

[The cytochemical indices of the sensorimotor cortex neurons in rats differing in their trainability in a food-acquiring habit].

Comparative study of protein metabolism in neurons of layers III and V of the sensorimotor cortex was carried out in two groups of Wistar rats, which differed in learning results: "bad" (60% of population) and "good" learners (40%). It was found out that the associative neurons (layer III) were most sensitive to cognitive load. In "bad" learners, an increase in nuclear and cytoplasmic dimensions and rise in protein concentration and content took place in these neurons, while in the efferent neurons (layer V) the protein content increased only in the cytoplasm.

[The characteristics of exploratory behavior in Wistar rats in a permanent inhomogeneous magnetic field].

The influence of weak perturbations (up to 300 microT) in the natural magnetic field (MF) (induced by the introduction of three constant magnets) on the problem task solving in complex maze was studied in two groups of Wistar rats. Under the action of inhomogeneous magnetic field there were no spontaneous change of the orienting for the explorative activity independently of the individual in the presence of the organization of goal-directed behaviour. Instead of the expected explorative activity, the stable and deep locomotor depression developed after orienting in a new environment.