Results 271 to 280 of about 17,709 (302)
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Medical & Biological Engineering & Computing, 1991
Photoplethysmography (PPG) and laser Doppler flowmetry (LDF) were compared and evaluated. The comparison was accomplished considering differences in physical principles and geometrical and optical conditions. Changes in human skin perfusion were induced by cold and hot water provocation on limited areas of the finger and the forearm. The results showed
L G, Lindberg, T, Tamura, P A, Oberg
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Photoplethysmography (PPG) and laser Doppler flowmetry (LDF) were compared and evaluated. The comparison was accomplished considering differences in physical principles and geometrical and optical conditions. Changes in human skin perfusion were induced by cold and hot water provocation on limited areas of the finger and the forearm. The results showed
L G, Lindberg, T, Tamura, P A, Oberg
openaire +2 more sources
Pain recognition with camera photoplethysmography
2017 Seventh International Conference on Image Processing Theory, Tools and Applications (IPTA), 2017In the last years a lot of effort was made in predicting the heart rate of a participant with remote Photo-plethysmography (rPPG) from the video channel but only few authors used it as a biosignal for classification of e.g. stress. In this work, we present the rPPG signal as a new modality for pain classification and evaluate the benefit of the three ...
Viktor Kessler +3 more
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On laparoscopic photoplethysmography and pulse oximetry
Journal of Clinical Monitoring and Computing, 2010Here we comment on the paper entitled "A novel laparoscopic pulse oximeter device. An easy, efficient and cost-effective way of detecting arterial structures." authored by Theodosopoulos et al., and recently published in the April issue of the Journal of Clinical Monitoring and Computing.
López-Silva, Sonnia María +2 more
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Non-invasive methods for heart rate measurement in fish based on photoplethysmography.
Journal of Experimental BiologyHeart rate is a crucial physiological indicator for fish, but current measurement methods are often invasive or require delicate manipulation. In this study, we introduced two non-invasive and easy-to-operate methods based on photoplethysmography, namely
Yacheng Deng +10 more
semanticscholar +1 more source
Photoplethysmography and its application in clinical physiological measurement
Physiological Measurement, 2007John Allen
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Analysis of vital signs using remote photoplethysmography (RPPG)
Journal of Ambient Intelligence and Humanized Computing, 2023R. Karthick, M. Dawood, P. Meenalochini
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A New Representation of Photoplethysmography Signal
2014In this paper, we study the representation of photoplethysmography (PPG) signal based on a finite Gaussian basis. An iterative optimization scheme is developed for the solution of the optimal representation. When we employ a summation of n (n < 8) Gaussian basis to approximate the original PPG signal, we can use a feature vector only including 3n ...
Dazhou Li +3 more
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Pulse Rate Variability Analysis Using Remote Photoplethysmography Signals
Sensors, 2021Eui Chul Lee, Lee Eui Chul
exaly