Secondary rhythms of automatically functioning systems

Bursian, A. V.; Dmitrieva, L. E.; Sizonov, V. A.

doi:10.1134/s0022093009060040

Cited by 4 publications

(2 citation statements)

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“…In this aspect, especially demonstrative are frequent cases of synchronization of bursts of the spontaneous somatomotor activity with oscillations of rhythm of respiration and heart rate, especially at the perinatal period, when the synchronization serves one of mechanisms of homeostasis. However, in these systems the synchronism of oscillations is unstable and not always responds to conditions of the cause-effect connection, such as instability of coincidence of oscillation phases, a possibility of replacement of synphasic oscillations by counterphasic, but with preservation of the previous rhythm [55]. The existence of the single generator of rhythm of secondary oscillations is indicated by the common rhythm, its appearance in some systems, by the absence in others suggests about rhythms, because the different systems can be differed by readiness to the reception of the signals from the common generator.…”

Section: Secondary Rhythmsmentioning

confidence: 97%

Structure of autorhythmical activity of contractile systems

Bursian

2012

J Evol Biochem Phys

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In the autorhythmical activity underlying many visceral and in early ontogenesis also somatomotor systems, three kinds of rhythms are to be distinguished: basic, reflecting activity of individual organs and of systems of organs, the secondary ones representing result of the frequency and amplitude modulation of the basic rhythms, and the rhythmical periodic activity whose distinguishing feature is alternation of the activity and rest phases. Each kind has principally different frequency characteristics, different organization and localization of sources. The frequency of basic rhythms is determined by the generator inserted into the system. It serves an individual characteristic of the current state of function of the organ, the degree of maturity of its motor apparatus. The secondary rhythm and the rhythm of the periodic activity cycles are provided by oscillatory processes common to the whole organism. Universality of these rhythms promotes integration of functions.

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Section: Secondary Rhythmsmentioning

confidence: 97%

Structure of autorhythmical activity of contractile systems

Bursian

2012

J Evol Biochem Phys

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“…The most part of the studies have the descriptive character and contain only the qualitative parameters. It has been established that some correlations exist between the character of activity in the somato-motor system and in other functional systems: CNS [1][2][3], digestive tract [4], circulatory and respiratory systems [5][6][7][8][9][10][11][12]. There are studies considering interactions between activity of the respiratory system and variability of the cardiac rhythm [13][14].…”

Section: Introductionmentioning

confidence: 99%

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

Кузнецов

Sizonov

Dmitrieva

2014

J Evol Biochem Phys

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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 inter-systemic 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 between motor and cardiovascular systems. In the case of preservation of motor activity bursts, a tendency for enhancement of correlational relations between the modulating rhythms of motor and somatomotor systems is observed. The cardiorespiratory interactions, more pronounced in intact rat pups in the near-and manyminute modulation diapason, under conditions of urethane, somewhat decrease, whereas the rhythmical components of the decasecond diapason-are weakly enhanced.

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