Photoplethysmography (PPG) is a non-invasive method to measure the relative blood volume change in blood vessels used in a wide range of medical applications. PPG signals can be recorded from different body regions such as fingertips, forehead and earlobes. In this study, information content of PPG signals of the left and the right index fingertips are processed and analyzed. PPG recordings are performed from ten healthy volunteers. Prior to recordings, all volunteers take rest for five minutes. Using a dedicated measurement system, signals are recorded from the left and the right fingertips of each volunteer simultaneously for 60 seconds with a sampling frequency of 50Hz, digitized with 10-bit resolution and stored in a personal computer. Signal average power and Poincare indexes of the signals are estimated and statistically analyzed. There are no systematic differences between the signal power estimated from the left and right fingertip signals (P>0.5). The signal power estimates for the left and the right fingertips show moderate correlations of 0.78, 0.80 and 0.68 for 0-4Hz, 0-2Hz and 2-4Hz frequency bands, respectively. When Poincare indexes SD1 and SD1/SD2 are considered, there are no systematic differences between the left and right fingertip signals (P > 0.5) however a systematic difference exists between the SD2 estimates (P=0.15). SD1 and SD1/SD2 estimates for the left and the right fingertips show high positive correlations of 1.00 and 0.99, respectively. However, a correlation of -0.30 exits for the left and the right fingertips when SD2 estimate is considered.
| Published in |
American Journal of Biomedical and Life Sciences (Volume 3, Issue 2-2)
This article belongs to the Special Issue Numerical and Experimental Research in Cardiovascular Sciences |
| DOI | 10.11648/j.ajbls.s.2015030202.12 |
| Page(s) | 6-10 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Photoplethysmography, Fingertip, Signal Power, Poincaré
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APA Style
Surhan Bozkurt, Gokhan Ertas. (2015). Comparison of Left and Right Fingertip PPG Signals Using Signal Power Estimates and Poincare Indexes. American Journal of Biomedical and Life Sciences, 3(2-2), 6-10. https://doi.org/10.11648/j.ajbls.s.2015030202.12
ACS Style
Surhan Bozkurt; Gokhan Ertas. Comparison of Left and Right Fingertip PPG Signals Using Signal Power Estimates and Poincare Indexes. Am. J. Biomed. Life Sci. 2015, 3(2-2), 6-10. doi: 10.11648/j.ajbls.s.2015030202.12
AMA Style
Surhan Bozkurt, Gokhan Ertas. Comparison of Left and Right Fingertip PPG Signals Using Signal Power Estimates and Poincare Indexes. Am J Biomed Life Sci. 2015;3(2-2):6-10. doi: 10.11648/j.ajbls.s.2015030202.12
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Download@article{10.11648/j.ajbls.s.2015030202.12,
author = {Surhan Bozkurt and Gokhan Ertas},
title = {Comparison of Left and Right Fingertip PPG Signals Using Signal Power Estimates and Poincare Indexes},
journal = {American Journal of Biomedical and Life Sciences},
volume = {3},
number = {2-2},
pages = {6-10},
doi = {10.11648/j.ajbls.s.2015030202.12},
url = {https://doi.org/10.11648/j.ajbls.s.2015030202.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajbls.s.2015030202.12},
abstract = {Photoplethysmography (PPG) is a non-invasive method to measure the relative blood volume change in blood vessels used in a wide range of medical applications. PPG signals can be recorded from different body regions such as fingertips, forehead and earlobes. In this study, information content of PPG signals of the left and the right index fingertips are processed and analyzed. PPG recordings are performed from ten healthy volunteers. Prior to recordings, all volunteers take rest for five minutes. Using a dedicated measurement system, signals are recorded from the left and the right fingertips of each volunteer simultaneously for 60 seconds with a sampling frequency of 50Hz, digitized with 10-bit resolution and stored in a personal computer. Signal average power and Poincare indexes of the signals are estimated and statistically analyzed. There are no systematic differences between the signal power estimated from the left and right fingertip signals (P>0.5). The signal power estimates for the left and the right fingertips show moderate correlations of 0.78, 0.80 and 0.68 for 0-4Hz, 0-2Hz and 2-4Hz frequency bands, respectively. When Poincare indexes SD1 and SD1/SD2 are considered, there are no systematic differences between the left and right fingertip signals (P > 0.5) however a systematic difference exists between the SD2 estimates (P=0.15). SD1 and SD1/SD2 estimates for the left and the right fingertips show high positive correlations of 1.00 and 0.99, respectively. However, a correlation of -0.30 exits for the left and the right fingertips when SD2 estimate is considered.},
year = {2015}
}
TY - JOUR T1 - Comparison of Left and Right Fingertip PPG Signals Using Signal Power Estimates and Poincare Indexes AU - Surhan Bozkurt AU - Gokhan Ertas Y1 - 2015/02/13 PY - 2015 N1 - https://doi.org/10.11648/j.ajbls.s.2015030202.12 DO - 10.11648/j.ajbls.s.2015030202.12 T2 - American Journal of Biomedical and Life Sciences JF - American Journal of Biomedical and Life Sciences JO - American Journal of Biomedical and Life Sciences SP - 6 EP - 10 PB - Science Publishing Group SN - 2330-880X UR - https://doi.org/10.11648/j.ajbls.s.2015030202.12 AB - Photoplethysmography (PPG) is a non-invasive method to measure the relative blood volume change in blood vessels used in a wide range of medical applications. PPG signals can be recorded from different body regions such as fingertips, forehead and earlobes. In this study, information content of PPG signals of the left and the right index fingertips are processed and analyzed. PPG recordings are performed from ten healthy volunteers. Prior to recordings, all volunteers take rest for five minutes. Using a dedicated measurement system, signals are recorded from the left and the right fingertips of each volunteer simultaneously for 60 seconds with a sampling frequency of 50Hz, digitized with 10-bit resolution and stored in a personal computer. Signal average power and Poincare indexes of the signals are estimated and statistically analyzed. There are no systematic differences between the signal power estimated from the left and right fingertip signals (P>0.5). The signal power estimates for the left and the right fingertips show moderate correlations of 0.78, 0.80 and 0.68 for 0-4Hz, 0-2Hz and 2-4Hz frequency bands, respectively. When Poincare indexes SD1 and SD1/SD2 are considered, there are no systematic differences between the left and right fingertip signals (P > 0.5) however a systematic difference exists between the SD2 estimates (P=0.15). SD1 and SD1/SD2 estimates for the left and the right fingertips show high positive correlations of 1.00 and 0.99, respectively. However, a correlation of -0.30 exits for the left and the right fingertips when SD2 estimate is considered. VL - 3 IS - 2-2 ER -
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