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Sleep Series Part 3: PPG Biophysics & Physiological Considerations
Explore PPG fundamentals, red vs. green light PPG, the limitations of reflectance PPG for oxygen saturation, and the impact of skin tone on measurement accuracy.
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Description
Join Labfront Chief Medical Officer Andrew Ahn for the third Sleep Science Series talk, diving into photoplethysmography (PPG). Learn about red vs. green light PPG, reflectance PPG limits for oxygen saturation, and how skin tone affects accuracy. Plus the history, modern uses, and practical tips for wearables.
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Videos
Sleep 3.1 Introduction to Photoplethysmography (PPG)
Sleep 3.1 Introduction to Photoplethysmography (PPG)
8:41
Sleep 3.2 PPG Theory and Biophysics
Sleep 3.2 PPG Theory and Biophysics
12:28
Sleep 3.3 Red vs. Green Light in PPG
Sleep 3.3 Red vs. Green Light in PPG
9:36
Sleep 3.4 Physiological Measures from PPG
Sleep 3.4 Physiological Measures from PPG
13:11
Sleep 3.5 Factors Affecting PPG Signals
Sleep 3.5 Factors Affecting PPG Signals
10:24
