The Application of an Ambulatory Multi-Parameter Monitoring System Measuring Emotional Stress

Ma, Ke; Khoo, Joshua C. T.; Brown, I.

doi:10.1109/bmei.2009.5305844

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Instead, physiological signal features can truly reflect the characteristics of human emotional states, because they are not controlled by subjective consciousness, and are mainly related to the autonomic nervous system (ANS) and endocrine system (Ekman et al, 1983 ; Kreibig, 2010 ; Levenson, 2014 ). The transition of emotional state is reflected in people's physiological activities, such as stress will cause the increase of heart rate, respiratory rate (Ma et al, 2009 ), bronchiectasis, pupil dilation, skin sweating, and other symptoms (Pagani et al, 1991 ; Arza et al, 2019 ; Greco et al, 2021 ). Considering the above factors and the needs (weak interference and easy acquisition) of wearable devices, ECG signal, GSR signal, and BVP signal are selected as the collected physiological signals in this study.…”

Section: Introductionmentioning

confidence: 99%

A novel physiological feature selection method for emotional stress assessment based on emotional state transition

Xing

et al. 2023

Front. Neurosci.

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The connection between emotional states and physical health has attracted widespread attention. The emotional stress assessment can help healthcare professionals figure out the patient's engagement toward the diagnostic plan and optimize the rehabilitation program as feedback. It is of great significance to study the changes of physiological features in the process of emotional change and find out subset of one or several physiological features that can best represent the changes of psychological state in a statistical sense. Previous studies had used the differences in physiological features between discrete emotional states to select feature subsets. However, the emotional state of the human body is continuously changing. The conventional feature selection methods ignored the dynamic process of an individual's emotional stress in real life. Therefore, a dedicated experimental was conducted while three peripheral physiological signals, i.e., ElectroCardioGram (ECG), Galvanic Skin Resistance (GSR), and Blood Volume Pulse (BVP), were continuously acquired. This paper reported a novel feature selection method based on emotional state transition, the experimental results show that the number of physiological features selected by the proposed method in this paper is 13, including 5 features of ECG, 4 features of PPG and 4 features of GSR, respectively, which are superior to PCA method and conventional feature selection method based on discrete emotional states in terms of dimension reduction. The classification results show that the accuracy of the proposed method in emotion recognition based on ECG and PPG is higher than the other two methods. These results suggest that the proposed method can serve as a viable alternative to conventional feature selection methods, and emotional state transition deserves more attention to promote the development of stress assessment.

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