Journal ArticleDOI
The blood supply of various skin areas as estimated by the photoelectric plethysmograph
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This article is published in American Journal of Physiology.The article was published on 1938-10-31. It has received 423 citations till now. The article focuses on the topics: Photoelectric plethysmography & Plethysmograph.read more
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Journal ArticleDOI
DC photoplethysmography in the evaluation of sympathetic vasomotor responses
TL;DR: Photoplethysmographic determination of the vasoconstrictor response in the finger after a deep inspiratory gasp and after ice water immersion offers an additional measure of the function of small (2 mu-6 mu) peripheral nerve fibres.
Journal ArticleDOI
In Vivo Measurement of Brain Blood Flow in the Cat
TL;DR: The results of these experiments showed the feasibility of using an indwelling photoelectric flow needle for measuring regional blood flows in the cat brain.
Proceedings ArticleDOI
Monitoring Respiratory Activity Using PPG Signals by Order Reduced-Modified Covariance AR Technique
TL;DR: An efficient method for extraction of respiratory activity from photoplethysmographic (PPG) signals based on modified covariance method, which makes use of order reduced AR-model by restricting the pole locations in the frequency range of interest is presented.
Journal ArticleDOI
Spontaneous volume changes in the extremities
Proceedings ArticleDOI
A real-time non-contact pulse rate detector based on smartphone
Min-che Li,Yuan-Hsiang Lin +1 more
TL;DR: A video method to extract pulse rate based on smartphone using front camera of smartphone to capture image frame data of human face region, defined as ROI (region of interest) for extracting PPG signal and Kalman filter is used to stable coordinates of ROI and enhance the waveform of PPG Signal.
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