Related Experiment Video
Updated: Jul 13, 2026
Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
Published on: December 8, 2010
Multilaser photoplethysmography technique
L Gailite1, J Spigulis, A Lihachev
1Bio-optics and Fiberoptics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia. skudrinjas@inbox.lv
Abstract:
New technique for parallel recording of reflection photoplethysmography signals in broad spectral band (violet to NIR) has been developed based on fiber-coupled laser irradiation and time-resolved spectrometric detection. Differences in photoplethysmography waveforms that were recorded simultaneously at different wavelengths confirmed the depth variety of the skin blood pulsation dynamics, thus the proposed methodology has a potential for application in skin microcirculation studies.
