Cited by 77Emotion and Mood RecognitionHeart Rate Variability and Autonomic ControlEEG and Brain-Computer Interfaces

Human stress classification during public speaking using physiological signals

Arsalan, Aamir, Majid, Muhammad·2021·Computers in Biology and Medicine

Abstract

Public speaking is a common type of social evaluative situation and a significant amount of the population feel uneasy with it. It is of utmost importance to detect public speaking stress so that appropriate action can be taken to minimize its impacts on human health. In this study, a multimodal human stress classification scheme in response to real-life public speaking activity is proposed. Electroencephalography (EEG), galvanic skin response (GSR), and photoplethysmography (PPG) signals of forty participants are acquired in rest-state and during public speaking activity to divide data into a stressed and non-stressed group. Frequency domain features from EEG and time-domain features from GSR and PPG signals are extracted. The selected set of features from all modalities are fused to classify the stress into two classes. Classification is performed via a leave-one-out cross-validation scheme by using five different classifiers. The highest accuracy of 96.25% is achieved using a support vector machine classifier with radial basis function. Statistical analysis is performed to examine the significance of EEG, GSR, and PPG signals between the two phases of the experiment. Statistical significance is found in certain EEG frequency bands as well as GSR and PPG data recorded before and after public speaking supporting the fact that brain activity, skin conductance, and blood volumetric flow are credible measures of human stress during public speaking activity.

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Crossref · 10.1016/j.compbiomed.2021.104377

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Authors
Arsalan, A., & Majid, M.
Affiliations
University of Engineering and Technology Taxila (PK)
Corresponding author
Majid, Muhammad
Venue
Computers in Biology and Medicine
Publisher
Elsevier BV
Published
2021-06
Volume
133
Pages
104377
ISSN
0010-4825 (ISSN-L)
OpenAlex
W3153885991
Cited by
77
References
79
Citations by year
2026: 15 · 2025: 20 · 2024: 15 · 2023: 17 · 2022: 9 · 2021: 1
FWCI
10.13
Type
journal article
Language
en
Open access
closed
Locations
  • Computers in Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
Keywords
public speaking stress, stress classification, multimodal physiological signals, EEG, skin conductance, photoplethysmography, feature fusion, social-evaluative stress, EEG frequency bands, blood volume
MeSH terms
Electroencephalography, Galvanic Skin Response, Humans, Speech, Photoplethysmography, Support Vector Machine

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