The Curious Cyborg
The Curious Cyborg writes about the things he finds interesting, from personal and professional interests. He hopes you find it informative!
From time to time there will be reviews, recommendations and articles across a broad range of topics, including Science and Technology, Biomedical Engineering, Various Entertainment Categories and in Food & Drink. Other topics may appear in the future.
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Featured Post
The Fascinating History of Photoplethysmography
Apr 27, 2022
The Photoplethysmogram, or PPG was first observed in 1936, by Alrick B. Hertzman who coined the term “Photoelectric Plethysmograph” due to the fact that the technique relied on using a light source and photocell (Photoelectric) to observe the light interaction with tissue. Hertzman theorized the regular pulsations that were seen could only be caused by the changing volume of blood in tissue synchronous with the beating of the heart (Plethysmograph). The term has more or less stuck, now shortened simply to Photoplethysmography or PPG.