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Biomedical subjects

S B Isabekova

Publications and source records attributed to S B Isabekova.

6 recordsLinked to original sources
PubMed1990

[The blood flow and oxygen tension in the brain of Horsfield's terrapin (Agrionemys horsfieldi) in hyper- and hypothermia].

The dynamics of cerebral blood flow and oxygen available were studied in alert Middle Asia tortoises at high and low body temperatures. Local and total cerebral blood flow and oxygen available were found to depend on heating or cooling of the tortoise. Alterations in the values of cerebral blood and oxygen supply, pH value of the arterial blood sand packed cell volume suggest that metabolic factors participate in the regulation of cerebral blood flow in reptiles.

Animals↗
PubMed1989

[Dynamics of blood flow in the brain in the lizard Phrynocephalus heliscopus under light and heat loading].

The role of the parietal and that of the lateral eyes in mediating heat and light impacts on total cerebral blood flow (TCBF) was studied in the lizard. A reduction in the TCBF in response to heat and light effects occurred under control conditions. An extirpation of the parietal eye and screening of the lateral eyes modified the responses of the vascular system increasing the TCBF.

Adaptation, Physiological↗
PubMed1983

[Transducer of the coordinates of a biological object for the Thermogradient device].

A device designed to determine the position of a biological object within the experimental field used to investigate behavioral reactions has been described. By means of light sources focusing the photodetector objective lens the square experimental field is divided into 9 equal sections. The movement of an animal in question from one section of the experimental field to another excites electric signals at the output of the corresponding photodetectors. These signals are processed and stored in the location unit made of integrated circuits. Further data processing for their convey to the pen-and-ink recorder is accomplished in the write pulse forming unite which is also made of microcircuits and discontinuous semiconductors. The device permits to document all the movement parameters of animals within the experimental field throughout the experiment.

Animals↗
PubMed1983

["Thermogradient" unit].

An experimental device--Thermogradient--for studying the behaviour of small animals under various thermal conditions has been described. Constructive circuit of thermoplates and principal circuits of thermoregulator and test thermometer are given. The device provides using of various combinations of temperature gradients and carrying out prolonged experiments with stable regime of heating and cooling of the thermoplates and the automatic registration of the coordinates of a biological subject on the various recorders. The use of the accessory boxes placed on the necessary number of plates with given temperature gradients is possible.

Animals↗
PubMed1975

[Effect of thermal stimulation of the skin on the activity of the cat cutaneous nerve].

Impulse activity of single postganglionic fibres in the sural nerve induced by thermal stimulation of skin of the contralateral hind limb was studied in the cat. The frequency of the impulse activity of these fibres increased in response to cooling and increased or decreased in response to heating= It is supposed that the sural nerve contains not only vasoconstrictive but also vasodilatative fibres

Animals↗