Non-contact Measurement of Respiration Rate With Camera-based Photoplethysmography During Rest and Mental Stress

Ernst, "Hannes; Malberg, Hagen; Schmidt", Martin

doi:10.22489/cinc.2022.219

Cited by 1 publication

(1 citation statement)

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“…Respiration measures originated from the chest expansion signal. Following the description in [121], spectral analysis of segments of 30 s length yielded breath rates (BR). Breath rate variability (BRV) marks the standard deviation of the breath rates measured over the course of 5 min.…”

Section: Plos Onementioning

confidence: 99%

Assessment of the human response to acute mental stress–An overview and a multimodal study

Ernst,

Scherpf,

Pannasch

et al. 2023

PLoS ONE

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Numerous vital signs are reported in association with stress response assessment, but their application varies widely. This work provides an overview over methods for stress induction and strain assessment, and presents a multimodal experimental study to identify the most important vital signs for effective assessment of the response to acute mental stress. We induced acute mental stress in 65 healthy participants with the Mannheim Multicomponent Stress Test and acquired self-assessment measures (Likert scale, Self-Assessment Manikin), salivary α-amylase and cortisol concentrations as well as 60 vital signs from biosignals, such as heart rate variability parameters, QT variability parameters, skin conductance level, and breath rate. By means of statistical testing and a self-optimizing logistic regression, we identified the most important biosignal vital signs. Fifteen biosignal vital signs related to ventricular repolarization variability, blood pressure, skin conductance, and respiration showed significant results. The logistic regression converged with QT variability index, left ventricular work index, earlobe pulse arrival time, skin conductance level, rise time and number of skin conductance responses, breath rate, and breath rate variability (F1 = 0.82). Self-assessment measures indicated successful stress induction. α-amylase and cortisol showed effect sizes of -0.78 and 0.55, respectively. In summary, the hypothalamic-pituitary-adrenocortical axis and sympathetic nervous system were successfully activated. Our findings facilitate a coherent and integrative understanding of the assessment of the stress response and help to align applications and future research concerning acute mental stress.

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Section: Plos Onementioning

confidence: 99%