Evaluation of skin pigmentation effect on photoplethysmography signals using a vascular finger phantom with tunable optical and mechanical properties.

J Biomed Opt · 2025 · PMC12646468 · PMID 41306936

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a decreasing trendno p-value reported

Although red and IR light demonstrated preserved PPG signals across all skin tones, these showed a decreasing trend in amplitude, SNR, and AC/DC ratio in darker pigmentation, which was an expected result.

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