Abstract
In birds, acute stress (a three-day 12-hour inversion of the photomode) is associated with the dominant activity of the sympathetic hypothalamus and hippocampus, which suppress the tone of the parasympathetic section and the reticular formation of the midbrain. The effect of hyperglycemia on the background of a negative chronotropic effect indicates a mismatch of the functions of the autonomic sections of the hypothalamus on the 30th day. Chronic stress in birds (30-days crowding) causes persistent pathological stress of the functions of the anterior hypothalamus and reticular formation of the middle brain with the suppression of parasympathetic tone of the posterior hypothalamus and high functional activity of the hippocampus, determining the switching of the ventricles of the heart to a more economical mode of functioning by the 30th day. Using central cholinoblockers or tranquilizers, having a cholinoblocking component in the mechanism of its influence during neurogenic stress and in the post-stress period is excluded, but it is possible to use stressprotektors.
Highlights
Stress refers to the manifestation of a neurogenic emotional state [1, 2]
Especially in conditions of restricted motor activity, the limbic system and the reticular formation (RF) of the brain stem revealed the circulation of excitement [11], which contributes to the formation of a new neurotransmitter integration, triggering the entire complex of stress reactions in the body [5, 8]
The aim of research is to study the dynamics of activity of subcortical structures of the brain of birds under chronic stress by the parameters of EEG correlates of stress, taking into account the dynamics of bird behavior, ECG indicators and the level of glycemia
Summary
Stress refers to the manifestation of a neurogenic emotional state [1, 2]. in practice, its differentiation with this type of state is complex and can only be relative [3, 4]. The development of a purposeful behavioral act with the manifestation of emotions against the background of neurogenic stress is associated with hypersynchronous electrical activity (EA) of subcortical structures of the brain [7, 8]. These emotional states have similar features: strengthening of protective and defensive reactions, inhibition of positive emotions and strengthening of negative ones with simultaneous violation of the vegetative functions of the body [9, 10]. The aim of research is to study the dynamics of activity of subcortical structures of the brain of birds under chronic stress by the parameters of EEG correlates of stress, taking into account the dynamics of bird behavior, ECG indicators and the level of glycemia
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