Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Photoelectric Plethysmography Using Fiber Optics for Application in Thermal Physiology

Report Number: AMRL TR 66-31
Author(s): Alrick B. Hertzman; Franz Flath
Corporate Author: Saint Louis University School of Medicine
Laboratory: Aerospace Medical Research Laboratories
Date of Publication: 1966-04
Pages: 14
Contract: AF 33(657)-11551
Project: 7164
Task: 716409
AD Number: AD0637173

Abstract:
Several designs of photoelectric plethysmographs utilizing fiber optics are described. One arrangement is used for studies on the cutaneous circulation. A modification of this design was applied successfully to the oral mucosa in climate chamber experiments. With a light wire substituted for the photocell, interference filters and multiplier phototubes may be combined for spectrophotometric recording. This arrangement is particulary useful for following changes in blood content of the illuminated tissue during changes in ambient temperature.

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