DocumentCode :
3072150
Title :
Cardiovascular response to acute stress in freely moving rats: Time-frequency analysis
Author :
Loncar-Turukalo, Tatjana ; Bajic, Dragana ; Japundzic-Zigon, Nina
Author_Institution :
Faculty of Technical Sciences, University of Novi Sad, Serbia
fYear :
2008
fDate :
20-25 Aug. 2008
Firstpage :
2614
Lastpage :
2617
Abstract :
Spectral analysis of cardiovascular series is an important tool for assessing the features of the autonomic control of the cardiovascular system. In this experiment Wistar rats ecquiped with intraarterial catheter for blood pressure (BP) recording were exposed to stress induced by blowing air. The problem of non stationary data was overcomed applying the Smoothed Pseudo Wigner Villle (SPWV) time-frequency distribution. Spectral analysis was done before stress, during stress, immediately after stress and later in recovery. The spectral indices were calculated for both systolic blood pressure (SBP) and pulse interval (PI) series. The time evolution of spectral indices showed perturbed sympathovagal balance.
Keywords :
Animals; Blood pressure; Cardiology; Cardiovascular diseases; Catheters; Rats; Signal analysis; Spectral analysis; Stress; Time frequency analysis; Algorithms; Animals; Automatic Data Processing; Cardiovascular Physiological Phenomena; Heart Rate; Male; Models, Statistical; Rats; Rats, Wistar; Signal Processing, Computer-Assisted; Stress, Physiological; Stress, Psychological; Time Factors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
ISSN :
1557-170X
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/IEMBS.2008.4649736
Filename :
4649736
Link To Document :
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