PMID: 25775855Mar 18, 2015Paper

Change of character of intersystemic interactions in newborn rat pups under conditions of a decrease of central influences (urethane anesthesia)

Zhurnal evoliutsionnoĭ biokhimii i fiziologii
Sergey V KuznetsovL E Dmitrieva

Abstract

On newborn rat pups, for the first day after birth, there was studied the character of mutual influences between the slow-wave rhythmical components of the cardiac, respiratory, and motor activities reflecting interactions between the main functional systems of the developing organism. The study was carried out in norm and after pharmacological depression of the spontaneous periodical motor activity (SPMA) performed by narcotization of rat pups with urethane at low (0.5 g/kg, i/p) and maximal (1 g/kg, i/p) doses. Based on the complex of our obtained data, it is possible to conclude that after birth in rat pups the intersystemic interactions are realized mainly by the slow-wave oscillations of the near- and manyminute diapason. The correlational interactions mediated by rhythms of the decasecond diapason do not play essential role in integrative processes. Injection to the animals of urethane producing selective suppression of reaction of consciousness, but not affecting activating influences of reticular formation on cerebral cortex does not cause marked changes of autonomous parameters, but modulates structure and expression of spontaneous periodical motor activity. There occurs an essential decrease of mutual influences betwe...Continue Reading

References

Jul 1, 1976·Electroencephalography and Clinical Neurophysiology·M A Corner, P Kwee
Dec 1, 1980·British Journal of Obstetrics and Gynaecology·T WheelerA J Murrills

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