CORTICO-AUTONOMIC RELATIONS IN THE REGULATION OF PHYSIOLOGICAL FUNCTIONS IN PIGS
P. V. Karpovskiy,V. V.Karpovskiy, A. V. Trokoz, A. O.Landsman, V. М. Skrypkina, R. V.Postoy, D. I. Kryvoruchko, V. O. Trokoz,V. I.Karpovskiy
karpovskiy@meta.ua
National University of Life and Environmental Sciences of Ukraine, Heroyiv Oborony str., 15, Kyiv,03041, Ukraine
The resultsof studying of the relationship between the basic properties of cortex processes and the tone of the autonomic nervous system in pigs are shown in the article.
Experiments were carried out on pigs of large white breed of 3 years old. Type of higher nervous activity in pigs was determined using rapid method developed by the Department of Animal Physiology, Pathophysiology and Immunology of NULES of Ukraine. According to the studying of conditioned reflex activity it was formed 4 experimental groups, 5 animals in each. The first group consisted of animals of strong, balanced and mobile, the second — a strong balanced inert, the third — a strong unbalanced, the fourth — the weak types of higher nervous activity. Then in animals of experimental group we studied the tone of the autonomic nervous system using trygemino-vagal test, by the results of which we determined the type of autonomic regulation and, therefore, the animal were treated to normotonics, sympathicotonics or vagotonics. To establish the relationship between cortex processes and tone of the autonomic nervous system the single-factor analysis of variance was conducted.
Established that vagotonics have the highest indices of strength, balance and mobility of cortex processes and sympathicotonics — the lowest.While normotonics occupy an intermediate position. Analyzing the correlanion of animals with different tone of autonomic nervous system to type of higher nervous activity revealed that normotonics and vagotonics mostly belong to strong types of higher nervous activity, while most of sympathicotonics belong to the weak type. It is established that the properties of cortical processes almost have no impact on the heart rate at rest, but found its reliable impact on the difference in heart rate before and after pressing the eyeballs. In addition, there was a reliable impact of balance of excitation and inhibition in the cortex to the heart rate after pressing the eyeballs.
Thus, there is a reliable close relationship between the basic properties of higher nervous activity and features of autonomic regulation of physiological functions in pigs.
Keywords: TYPES OF HIGHER NERVOUS ACTIVITY, TONE OF AUTONOMIC NERVOUS SYSTEM, PIGS, TRIGEMINO-VAGAL REFLEX, CONDITIONED REFLEX ACTIVITY
