Influence of mental stress on the pulse wave features of photoplethysmograms

Patrick Celka; Peter Charlton; Bushra Farukh; Philip Chowienczyk; Jordi Alastruey

doi:10.1049/htl.2019.0001

Influence of mental stress on the pulse wave features of photoplethysmograms

Patrick Celka, Peter Charlton, Bushra Farukh, Philip Chowienczyk, Jordi Alastruey

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Abstract

Mental stress is a major burden for our society. Invasive and non-invasive methods have been proposed to monitor and quantify it using various sensors on and off body. In this Letter, the authors investigated the use of the arm photoplethysmogram (PPG) to assess mental stress in laboratory conditions. Results were in correspondence with their previous in-silico study which guided the present study. Three wave shape parameters were identified for stress assessment from the PPG signal: (i) the time from dicrotic notch to end diastole; (ii) the time from pulse onset to systolic peak; and (iii) the ratio of diastolic to systolic area. The proposed in-vivo results showed that the two first parameters responded significantly to increased mental stress and to a breathing relaxation procedure, complementing heart rate, heart rate variability, and pulse transit time as indices of stress.

Original language	English
Pages (from-to)	7-12
Number of pages	6
Journal	Healthcare Technology Letters
Volume	7
Issue number	1
Early online date	16 Oct 2019
DOIs	https://doi.org/10.1049/htl.2019.0001
Publication status	Published - Feb 2020

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Influence of mental stress_CELKA_Publishedonline16October2019_GOLD VoR (CC BY)Final published version, 220 KBLicence: CC BY

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abstract = "Mental stress is a major burden for our society. Invasive and non-invasive methods have been proposed to monitor and quantify it using various sensors on and off body. In this Letter, the authors investigated the use of the arm photoplethysmogram (PPG) to assess mental stress in laboratory conditions. Results were in correspondence with their previous in-silico study which guided the present study. Three wave shape parameters were identified for stress assessment from the PPG signal: (i) the time from dicrotic notch to end diastole; (ii) the time from pulse onset to systolic peak; and (iii) the ratio of diastolic to systolic area. The proposed in-vivo results showed that the two first parameters responded significantly to increased mental stress and to a breathing relaxation procedure, complementing heart rate, heart rate variability, and pulse transit time as indices of stress.",

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AU - Alastruey, Jordi

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Influence of mental stress on the pulse wave features of photoplethysmograms

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Assessing Mental Stress from the Photoplethysmogram: A Numerical Study

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