[Some indicators of nervous system function in people exposed to harmful conditions of the Chernobyl accident]. / Nekotorye pokazateli funktsionalnogo sostoianiia nervnoi sistemy liudei, podvergshikhsia deistviiu kompleksa neblagopriiatnykh faktorov Chernobylskoi katastrofy.

Clinico-neurophysiological study of the functional state of the nervous system was performed for persons who participated in elimination of the Chernobyl accident consequences in 1986, as well as for persons working in the 30 km zone. Mean age of the persons was 41. Vegetative dystonia syndrome was diagnosticated in 50% of examined subjects. The increased perception and pain thresholds, as well as the thresholds' asymmetry were determined in 30% of patients. The conduction velocity of sensory and motor nerves, as well as the neuromuscular transmission were normal. No substantial changes in parameters of the soleus H- and M-responses were detected. A decreased amplitude and increased latency of the evoked skin sympathetic potential were found indicating a decreased tone of the adrenergic sympathetic vasoconstrictors and cholinergic sudomotor fibres, that may be one of the pathogenic mechanisms of the sensory, vegetotrophovascular disorders for these subjects. Decreased activity of the sympathetic autonomic system causes permanent course of the vegetative dystonia syndrome and more seldom the parasympathetic autonomic paroxysms. A decreased tone of the sympathetic autonomic system may be due to the monoaminergic neuromediation inhibition (decreased noradrenaline and dopamine excretion for the same subjects), that can induce psychoemotional disorders, depression and sleep-wakeness cycle disorders.

[The organization and principles of rendering medical care to minor casualties in otorhinolaryngology]. / Organizatsiia i printsipy okazaniia meditsinskoi pomoshchi legkoranenym otorinolaringologicheskogo profilia.

The article deals with the notions of prior and coexistent ENT injuries. There are classification of mechanical injuries and ENT diseases, as well as rate and structure of ENT sanitary losses, and its evacuation and treatment procedures. The authors give gradations of slight, medium and severe ENT-injured and ENT-sick contingent, and set up the categories of minimally ENT sick, injured and wounded. The article also contains data concerning the treatment policy including immediate medical care at various stages of medical evacuation, and describes peculiarities of triage of different groups of ENT sick and injured. There are proposals for improvement of medical care to ENT sick, injured and wounded.

[Effect of the intensity of stimulation on the variability and interactions of various late components of the somatosensory evoked potentials in humans]. / Vliianie intensivnosti stimuliatsii na variabel'nost' i vzaimo- sviaz' nekotorykh pozdnykh komponentov somatosensornogo vyzvannogo potentsiala u cheloveka.

Human evoked potentials (EP) to paired somatosensory pain stimuli were recorded from the vertex. Amplitude of the N150 and P250 components of the second EP decreased within 600-1000 ms interstimulus interval. The depression occurred was more intensive with an increase of the first (conditioning) stimulus strength. As a rule, depression of N150 component was more pronounced. Selective averaging of EPs indicated that, when the stimulus intensity was stable, variations in the amplitudes of identical components in response to the first and second stimuli were not usually negatively correlated; positive correlation was frequently found. This can be regarded as a proof that there is no direct relation between the inhibitory after-processes in the cellular generators of the studied EP components and the degree of their previous activation. Such variations can reflect the sequence of periods of an increase and a decrease in the generator activity under conditions of stable stimulus intensity.

[Effect of electric stimulation of auricular acupuncture points on H-reflex]. / Vliianie élektrostimuliatsii aurikuliarnykh akupunkturnykh tochek na H-refleks.

The non-nociceptive H-reflex in the musculus soleus were recorded before and after auricular electroacupuncture (AEAP) in patients with vertebrogenic pain syndrome. Changes of the H-reflex on the side of the pain syndrome were observed after ipsi- and contralateral AEAP, the latter producing effect more often. Changes of H-reflex are mainly of facilitating character (71.4%) and, rarely, of inhibitory character (14.3%). In the part of patients AEAP produced distinct facilitation of M-response.

[Modulation of the nociceptive flexor reflex by the electrostimulation of auricular acupuncture points]. / Moduliatsiia notsitseptivnogo sgibatel'nogo refleksa élektrostimuliatsiei aurikuliarnykh akupunkturnykh tochek.

Nociceptive flexor reflex (NFR) in patients with vertebrogenic lumbosacral pain syndromes was recorded before and after the ipsi- and contralateral auricular electroacupuncture (AEAP). Changes in NFR were observed after ipsi- and contralateral AEAP, each producing facilitatory and inhibitory effects on NFR. Facilitatory influence of AEAP on NFR correlated with hypalgesia, that apparently reflected recovery of the afferent input peculiarities.

[Changes in somatosensory evoked potentials in patients with vertebrogenic pain syndromes treated by electroacupuncture]. / Izmeneniia somatosensornykh vyzvannykh potentsialov u bol'nykh vertebrogennymi bolevymi sindromami pod vliianiem elektroakupunktury.

Application of electroacupuncture (EAP) of the segmental points to patients with vertebrogenic algesic syndromes decreased amplitude of N150 and P240 waves recorded from vertex to painful electrocutaneous stimulation in the region innervated by an affected root. As distinct from EAP of segmental point auricular EAP not only decreased the amplitude of late components of evoked potentials (EP), but also increased it, direction of EP changes depending on the character of sensitivity disorders. It is suggested that effect of EAP-evoked EP changes in patients with hypalgesia is determined by two oppositively acting factors: by a decrease of nociceptive afferent impulsation intensity as a result of the antinociceptive system activation and by an increase of the afferent impulsation intensity due to recovery of function of central terminals in primary sensory neurons.