[Indicators of mental status, catecholamine excretion, lipid metabolism and hemostasis in air-traffic controllers at automated and non-automated stations during their non-work days]. / Pokazateli psikhicheskogo sostoianiia, ekskretsii katekholaminov lipidnogo obmena i gemostaza u aviadispetcherov avtomatizirovannykh i neavtomatizirovannykh punktov v den' otdykha.

The changes reported during rest days among air-traffic controllers working at automated and non-automated stations demonstrated the similar degree of functional rehabilitation of the body systems, thus a positive impact of automatization on those working at specific air-traffic management stations being emphasized.

[Neurophysiologic patterns of movement control in free-moving Astacus astacus crayfish]. / Neirofiziologicheskie zakonomernosti upravleniia dvizheniiami v usloviiakh svobodnogo povedeniia u raka Astacus astacus.

Studies have been made on the neuronal organization of muscular control in the dactylopodite during grasping the food by the claw, holding it by the dactyls, tranasportation to the mouth opening area and to the perioral organs. It was shown that in coordination relationships of efferent structures which control muscular efforts of the dactylopodite during realization of foodgrasping movements, the important role is played by afferent influences from hairy mechanoreceptors located on the inner surface of the claw dactyls, as well as by the influences from the receptors of the propo-dactylopodite specialized mechanoreceptor organ. Operation of these sources of afferent influences seems to be the main principle of organization of minimal biological information-control system.

[Role of different central nervous system structures of the crayfish Astacus leptodactylus in realizing food-getting behavior]. / Rol' razlichnykh struktur tsentral'noi nervnoi sistemy raka Astacus leptodactylus v realizatsii pishchedobyvaiushchego povedeniia.

After cutting the nervous chain at different levels, separate fragments of motor component of foodgetting behaviour of the crayfish disappeared. Separation of the supraoesophageal ganglion from the nervous chain results in the abolition of food searching phase, control and organization of aimed locomotions, fixation of the body with respect to the target objects. At the same time the activity of separate functional blocks becomes more evident being realized in automatic regime with the trigger type of its onset. Suboesophageal ganglion structures initiate the spontaneous non-coordinated locomotor activity of the postural and locomotor apparatus and provide for realization of the whole algorhythm: grasping the food, driving the claw to the rostral part of the body, transmission the food to the II-III pairs of walking legs and then to the mouth opening. Structures of the 1st isolated thoracal ganglion realize grasping and holding reflex which is going on slowly and inactively.

[Functional structure of the feeding behavior of the crayfish Astacus leptodactylus]. / Issledovanie funktsional'noi struktury pishchevogo povedeniia raka Astacus leptodactylus.

Analysis of the motor component in feeding behaviour of the crayfish enabled to differentiate it into separate fragments with respect to the targets which are reached due to realization of each of these fragments. It is suggested that separate fragments are realized by some functional blocks which are activated from their own receptive zones by trigger mechanisms. With changing the coordinates of food stimulus the whole structure of the behaviour also changes due to the inclusion of additional fragments (locomotions, rearrangement of postures, activation of the claw extremities, etc.). Since this rearrangement favours the animal in reaching its final target, it may be considered as adaptive one.

[Functional connections between symmetrical segemental systems for controlling the claw muscles of the crayfish Astacus leptodactylus]. / O funksional'nykh sviaziakh mezhdu simmetrichnymi segmentarnymi sistemami upravleniia myshtsami kleshnevykh konechnostei raka Astacus leptodactylus

Studies have been made on functional connections between symmetric neuronal ensembles in the 1st thoracal ganglion realizing segmentary control of muscles in the claw dactylopodite. During moderate adequate stimulation of the receptive field, symmetric ensembles of efferent neurons operate independently from each other. Intensive stimulation of the receptive field results in the reflex dactylopodite abduction and in associated excitation of the symmetric contralateral group of corresponding neurons. Interaction of the symmetric ensembles is realized on both the segmentary and supersegmentary levels.