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Second derivative analysis of forehead photoplethysmographic signal in healthy volunteers and diabetes patients

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Part of the IFMBE Proceedings book series (IFMBE,volume 39)

Abstract

The second derivative analysis has been used to characterize the changes in forehead photoplethysmographic (PPG) signal, which are caused by the stiffness of blood vessels. Before the distinctive wave amplitudes were measured the forehead PPG signals from healthy volunteers and diabetes patients were filtered, two times differentiated, normalized in length, and averaged. The correlation relationships between normalized amplitudes and age were found. The values of normalized amplitudes b/a and d/a were found to be influenced by the stiffness of the blood vessels.

Keywords

  • Photoplethysmography
  • second derivative method
  • arterial stiffness

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Correspondence to K. Pilt .

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Pilt, K., Meigas, K., Temitski, K., Viigimaa, M. (2013). Second derivative analysis of forehead photoplethysmographic signal in healthy volunteers and diabetes patients. In: Long, M. (eds) World Congress on Medical Physics and Biomedical Engineering May 26-31, 2012, Beijing, China. IFMBE Proceedings, vol 39. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29305-4_109

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  • DOI: https://doi.org/10.1007/978-3-642-29305-4_109

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-29304-7

  • Online ISBN: 978-3-642-29305-4

  • eBook Packages: EngineeringEngineering (R0)