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Proceedings Paper

Spontaneous oscillations in the peripheral circulation system as measured by photoplethysmography
Author(s): Meir Nitzan; Hedzer de Boer; Sergei Turivnenko; Anatoly Babchenko; Dan Sapoznikov
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Paper Abstract

The variability in heart rate is related to the activity of the autonomic nervous system, which influences the heart rate either directly or via the peripheral circulation. In this study direct measurement of peripheral circulation parameters and their variability was obtained by means of photoplethysmography which provides assessment of the blood volume in the tissue and its increase during systole by measuring the light absorption in the tissue. Both blood volume and systolic blood volume increase showed oscillations in very low frequency, about 0.02 Hz and in relative high frequency, about 0.3 Hz, which is related to respiration. In comparison to the variability of the heart rate the high frequency oscillation has lower amplitude but the low frequency oscillation is much higher.

Paper Details

Date Published: 22 December 1994
PDF: 8 pages
Proc. SPIE 2328, Biomedical Optoelectronic Devices and Systems II, (22 December 1994); doi: 10.1117/12.197509
Show Author Affiliations
Meir Nitzan, Jerusalem College of Technology (Israel)
Hedzer de Boer, Jerusalem College of Technology (Israel)
Sergei Turivnenko, Jerusalem College of Technology (Israel)
Anatoly Babchenko, Jerusalem College of Technology (Israel)
Dan Sapoznikov, Jerusalem College of Technology (Israel)

Published in SPIE Proceedings Vol. 2328:
Biomedical Optoelectronic Devices and Systems II
Nathan I. Croitoru; Norbert Kroo; Mitsunobu Miyagi; Riccardo Pratesi; Juergen M. Wolfrum, Editor(s)

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