ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Dumskij D. V., Klimova O. A., Pavlov A. N. Stress-induced changes of the arterial blood pressure dynamics in white rats. Izvestiya VUZ. Applied Nonlinear Dynamics, 2004, vol. 12, iss. 1, pp. 26-39. DOI: 10.18500/0869-6632-2004-12-1-26-39

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Stress-induced changes of the arterial blood pressure dynamics in white rats

Dumskij Dmitrij Viktorovich, Saratov State University
Klimova Oksana Anatolevna, Saratov State University
Pavlov Aleksej Nikolaevich, Saratov State University

In this work ап approach to study multimode regimes of dynamics of biological systems is proposed that is based оп the quantitative description of complexity of instantaneous frequencies for different rhythms. In experiments on white rats it is shown that stress does not result in strong changes of complexity measures of evolutionary dynamics in the low-frequency region of heart rate variability. However, changes of the dynamics in the high-frequency region take place and there are differences in reactions to stress in female and male rats.

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The work was supported by grants CRDF (SR-006-X1) and RFBR 04-02-16769, grants of Ministry of Education of Russia and CRDF within the program BRHE (2003 Post-Doctoral Fellowship Award Y1-P-06-06) and grant of the President of the Russian Federation for candidates of science.
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