[Effects of parameters of the higher nervous activity on stress in students during exams]. / Vliianie pokazatelei vysshei nervnoi deiatel'nosti studentov na kharakter protekaniia ékzamenatsionnogo stressa.

The complex research of visceral responses of the students in conditions of examination stress was conducted. The main parameters of hemodynamic and heart rate variability were investigated depending on a type of higher nervous activity and self-evaluation of the students. It is shown, that at the students with a high level of steadiness of nervous processes at examination the increased vagal activity is marked, and in the students with a high level of self-evaluation at examination the lower activation of a sympathetic system is revealed.

[Changes in the functional state of the nervous system of students during studies]. / Izmeneniia funktsional'nogo sostoianiia nervnoi sistemy studentov vo vremia ucheby.

The paper describes the function of the autonomic nervous system of students during their study at a higher educational establishment. There are changes in the activity of the sympathetic and parasympathetic nervous system during a study day and examination session. Findings indicate that the examination session is a strong stress to the students, which appears as significant rises in the higher tension index and in the Kerdo autonomic index and a reduction in the standard deviation of cardiac intervals.

[The effect of their initial functional status on the radiation reaction of the neurons in the rat spinal cord]. / Vliianie iskhodnogo funktsional'nogo sostoianiia na luchevuiu reaktsiiu neironov spinnogo mozga krysy.

The influence of CNS functional state and structural changes of neurons in spinal cord following local exposure to 38 or 76 Gy X-radiation. Morphological analysis show, that stimulation of peripheral nerves increase, but hypoxia or barbiturates decrease destruction of spinal neurons by radiation. Value destruction also depends of neurons volumes.

[Changes in the spinal cord potentials of the rat in whole-body irradiation at a dose of 360 Gy]. / Izmeneniia potentsialov spinnogo mozga krysy pri total'nom obluchenii v doze 360 Gr.

In acute experiments in rats the effect of the whole-body X-irradiation with a dose of 360 Gy on induced somatosensory spinal cord potentials (SCP) was studied. The SSP components which show decrease in intensity and period depending upon a dose and time after irradiation were determined. The destruction of spinal input control systems was found. The causes and possible pathways of neuronal response depression which is probably due to synaptic structure damage have been considered. It is assumed that spinal potentials can be used as additive index of the extent of reaction to irradiation.

[Objective criteria for determining the degree of radiation injury of nerve cells in a cerebral syndrome]. / Ob''ektivnye kriterii dlia opredeleniia stepeni radiatsionnogo porazheniia nervnykh kletok pri tserebral'nom sindrome.

The automatized morphometric technique was used to estimate the degree of injury to spinal nervous cells of rats exposed to 360 Gy radiation. It was shown that the compression coefficient and the volume of neuron nuclei considerably diminished as the CNS-syndrome developed, and the geometrical dimensions of the nervous cells themselves underwent phase changes.

[Temporal characteristics of radiation responses of spinal cord neurons]. / K voprosu o vremennykh kharakteristikakh luchevykh reaktsii neironov spinnogo mozga.

In this report a description is given of functional and structural changes in spinal cord occurring 10, 25 and 50 days following local exposure to 76 Gy X-radiation. During the observation period, the capacity of synaptic structures was progressively impaired, the peripheral nerves irritated by high frequency, and neurons of exposed spinal cord segments changed.