Multilaser photoplethysmography technique.
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.
Gailite
L
L
Bio-optics and Fiberoptics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Riga, Latvia. skudrinjas@inbox.lv
Spigulis
J
J
Lihachev
A
A
D001783:Blood Flow Velocity; D006801:Humans; D007834:Lasers; D028022:Low-Level Light Therapy / Q000295:instrumentation* / Q000379:methods; D008833:Microcirculation; D017156:Photoplethysmography / Q000295:instrumentation* / Q000379:methods; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D012867:Skin / Q000098:blood supply*; D012879:Skin Physiological Phenomena; D014655:Vascular Resistance / Q000502:physiology