TITLE

Dynamics of blood pressure in healthy rats at rest and after stress

AUTHOR(S)
Igosheva, Natalia B.; Janson, Natalia B.; Balanov, Alexander G.; Romanova, Tatiana P.; Glushkovskaja-Semjachkina, Oksana V.; Anishchenko, Tatiana G.; Anishchenko, Vadim S.
PUB. DATE
February 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 502 Issue 1, p168
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We study the dynamics of arterial blood pressure in freely moving healthy rats and rats with heart injuries caused by severe stress. Sequences of return times extracted from blood pressure signals and return times maps are analyzed. Different types of behavior of return times are classified in healthy rats at rest. Dynamics of return times of healthy rats and rats with stress-induced heart damages differs significantly. The general effect of stress is the increase of amplitude of return times variations and the increase of their degree of order. One of the often observed consequences of stress is the change of the ratio between the heart and respiration frequencies. © 2000 American Institute of Physics.
ACCESSION #
6028565

 

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