[THE DEPENDENCE OF THE DYNAMICS IN THE BAND OF THETA ON THE TIME DELAY AND LEVEL OF CONSISTENCY IN THE PRESENTATION OF THE ACOUSTIC IMAGE OWN EEG].

Dynamics of activity in the frequency band of theta waves during of procedures, listening of the acoustic image of the own EEG was investigated. The formation of the acoustic image EEG was performed with a significant reduction of musical properties. It is shown that the increase in activity in the theta range depends on the level of synchronization and consistency of the presentation of the acoustic image own EEG relative to the current bioelectrical activity of the brain. The maximum increase in activity in the theta range was observed with minimum time delay and maximum consistency requirements of sounds with the current EEG. It is concluded that the increase in activity in the range of theta waves in the listening environment acoustic image own EEG is determined by the correlation of sounds with the current bioelectric activity of the brain.

Behavioral, hormonal, and neurotransmitter reactions to stress in adult rats with a history of high IL-1ß content in the early postnatal ontogeny.

Behavioral, hormonal, and neurotransmitter reactions to foot shock were studied in adult rats treated with IL-1ß during week 3 of life. After stress, these animals differed from controls treated with saline by high levels of dopamine, serotonin, and 5-hydroxy-indolacetic acid in the hypothalamus. In contrast to controls, they developed a significant stress-induced increase of blood corticosterone level and exhibited lesser motor and exploratory activities in the open field test.

[Speach breasing optimization with biofeedback on respiratory arrythmia of heart rate].

Dynamics of physiological and psychological characteristics of healthy volunteers (adolescents and adults), speech professionals (logopedics), and stutter patients (adolescents and adults) in process of adoptive self-regulation with biofeedback on objective physiologic indicator - changes of respiratory arrhythmia of hart rate were investigated. High level of efficacy and practicability of the method application was revealed to study, diagnostics, optimization and correction of breathing, speech and behavior.

[Efferent neural apparatus of the thymus gland, spleen and lymph nodes and its reaction to electric stimulation of the posterior hypothalamic field]. / Efferentnyi nervnyi apparat timusa, selezenki, limfaticheskikh uzlov i ego reaktsiia na élektrostimuliatsiiu zadnego gipotalamicheskogo polia.

At a histochemical investigation of the rabbit lymphoid organs innervation certain peculiarities on histotopography of adrenergic and acetylcholinesterase (AChE)-containing nervous elements have been established. At a chronic experiment by means of a dosed repeated bilateral electrostimulation of the posterior hypothalamic field in the organs mentioned, inhibition of the functional activity has been noticed. It is most specific not for the AChE-containing structures, but for the adrenergic ones, localized to some extent in the parenchyma, as well as along the course of the blood vessels and their adventitium. The results are discussed in terms of modulatory influence of the posterior hypothalamic field on trophic and functions of the lymphoid tissue. This influence is realized both humoraly and via the nervous pathways (either directly using certain ways and connections, or indirectly by means of neurogenic tonus of the intraorganic blood vessels regulation).

[Morphofunctional changes in the adrenergic innervation of the major cerebral arteries during bilateral electrostimulation of the locus coeruleus]. / Morfofunktsional'nye izmeneniia adrenergicheskoi innervatsii magistral'nykh arterii mozga pri bilateral'noi élektrostimuliatsii golubogo piatna.

The intramural adrenergic nervous apparatus of cerebral arteries was studied in adult rabbits after 3-10 sessions of electrical stimulation of locus coeruleus. The activity of nerve structures was determined by estimating the density of adrenergic perivascular plexuses and by semi-quantitative cytophotometry of changes in the catecholamine content of nerve varicosities. The stimulation was followed by a 28.2 +/- 1.5% increase in adrenergic innervation density. while catecholamine content in perivascular nerve structures displayed a tendency to decrease. The problem of central effects on cerebral blood flow autoregulation is discussed.

Spatial-temporal organization of subcortical brain functions during immune responses.

In the course of long-term experiments on rabbits, functional dynamics of subcortical structures were studied by recording background (DC) and evoked potentials (EP) during immune responses elicited to various antigens. During the first day of the immune response process to the different antigens, changes in hypothalamus functioning were similar and occurred with a latency of 9 to 31 min. Inductive and productive primary immune responses were accompanied by successive phasic changes in the functioning of a number of subcortical structures.

[Morphofunctional restructuring of the nervous system of the lymphoid organs during electrostimulation of the hypothalamus]. / Morfofunktsional'naia perestroika nervnogo apparata limfoidnykh organov pri élektrostimuliatsii gipotalamusa.

The intramural nervous apparatus of rabbit lymphoid organs was examined after 15 and 30 sessions of electric stimulation of the posterior hypothalamus. The function of nerve cells was evaluated by cytophotometry according to the content of catecholamines and acetylcholinesterase (ACE) activity. In the mesenteric lymph nodes, stimulation led to a decrease in the activity of both adrenergic and ACE-containing nerve cells. The spleen demonstrated a reduction in the catecholamine content in the perivascular nerve plexuses, with a simultaneous rise of the catecholamine content in the fibers located in the parenchyma, which evidences inhibition of the neurogenous mechanisms of vasomotor control and possible selective activation of the sympathetic mechanisms involved in the regulation of the immunogenesis. Thymic preparations impregnated with silver salts manifested high argyrophilia of the nerve cells, characteristic of the reactive phase of the destructive process. The problems of the hypothalamic effects on the blood supply and functions of the immune system organs are discussed.

[Space-time functional organization of the brain subcortical structures in the process of developing immune reactions]. / Prostranstvenno-vremennáia organizatsiia funktsii podkorkovykh struktur mozga v protsesse razvitiia immunnykh reaktsii.

The functional states of subcortical brain structures were investigated with the aid of DC potential and EPs in the course of immune response. Change of the hypothalamic structures' functional state was the same after different antigen immunization during the 1st day of immune process and the latency of this process varied from 9 to 13 min. The inductive and productive periods of primary immune response developed with successive phasic changes in a number of subcortical structures.

[Role of licking and concomitant changes in the excitability of nerve centers in the elaboration of gustatory information in rats]. / Rol' lizaniia i sopriazhennykh izmenenii vozbudimosti nervnykh tsentrov v obrabotke vkusovoi informatsii u krys.

The mechanism of nervous control of licking was studied in the frame work of the electrophysiological analysis of conditioned taste aversion. The licking rhythm is so stable that the rats are unable to slow it down by 20 percent. If the solution which was previously used for establishing the conditioned taste aversion, appears in the drinking spout, the rat stops drinking after one or two licks. Analysis of temporal relationships between afferent and efferent impulse activity of licking shows that the comparison of gustatory signals with memory traces and the corresponding decision occurs within 80 to 120 ms after lick onset. Electrical stimulation of the hypothalamic centres through implanted electrodes has shown that the amplitude of evoked responses and the impairment of licking increases, in proportion to the delay between lick onset and stimulus application. Isolated discharges of epileptic foci in the frontal cortex and the hypothalamus cause an omission of one or several licks, without interfering with the activity of the licking generator.