Cited by 135Emotion and Mood RecognitionVirtual Reality Applications and ImpactsHeart Rate Variability and Autonomic Control

Anxiety level recognition for virtual reality therapy system using physiological signals

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Šalkevicius, Justas, Damaševičius, Robertas, Maskeliunas, Rytis, Laukienė, Ilona·2019·Electronics

Abstract

Virtual reality exposure therapy (VRET) can have a significant impact towards assessing and potentially treating various anxiety disorders. One of the main strengths of VRET systems is that they provide an opportunity for a psychologist to interact with virtual 3D environments and change therapy scenarios according to the individual patient’s needs. However, to do this efficiently the patient’s anxiety level should be tracked throughout the VRET session. Therefore, in order to fully use all advantages provided by the VRET system, a mental stress detection system is needed. The patient’s physiological signals can be collected with wearable biofeedback sensors. Signals like blood volume pressure (BVP), galvanic skin response (GSR), and skin temperature can be processed and used to train the anxiety level classification models. In this paper, we combine VRET with mental stress detection and highlight potential uses of this kind of VRET system. We discuss and present a framework for anxiety level recognition, which is a part of our developed cloud-based VRET system. Physiological signals of 30 participants were collected during VRET-based public speaking anxiety treatment sessions. The acquired data were used to train a four-level anxiety recognition model (where each level of ‘low’, ‘mild’, ‘moderate’, and ‘high’ refer to the levels of anxiety rather than to separate classes of the anxiety disorder). We achieved an 80.1% cross-subject accuracy (using leave-one-subject-out cross-validation) and 86.3% accuracy (using 10 × 10 fold cross-validation) with the signal fusion-based support vector machine (SVM) classifier.

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Crossref · 10.3390/electronics8091039

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  • Real-time measurement of physiological data during VRET can be used to automatically classify the level of anxiety through blood pressure or galvanic skin response.

    “Real-time measurement of physiological data acquired during VRET can even be used to automatically classify the level of anxiety through blood pressure or galvanic skin response (Šalkevicius et al., 2019).”

    From Virtual Reality exposure therapy in the treatment of public speaking anxiety and social anxiety disorder (2024) · cites this paper as Šalkevicius et al., 2019

    The Psychological Signal Recording section says GSR and BVP were collected during VRET, and the Discussion and Conclusions reports a four-level anxiety classification model and the possibility of real-time recognition. But the paper measures blood volume pulse (BVP), not blood pressure, and describes integration of the model into the VRET interface as future work rather than demonstrating deployed real-time classification. The provided copy gives no page numbers for these sections. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

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Authors
Šalkevicius, J., Damaševičius, R., Maskeliunas, R., & Laukienė, I.
Affiliations
  • Department of Software Engineering, Kaunas University of Technology, Kaunas 51368, Lithuania
  • Silesian University of Technology (PL)
  • Institute of Mathematics, Silesian University of Technology, Gliwice 44-100, Poland
  • Lithuanian University of Health Sciences (LT)
Corresponding author
Damaševičius, Robertas
Venue
Electronics
Publisher
MDPI AG
Published
2019-09-16
Volume
8
Issue
9
Pages
1039
ISSN
2079-9292 (ISSN-L)
OpenAlex
W2974802536
Cited by
135
References
53
Citations by year
2026: 5 · 2025: 17 · 2024: 24 · 2023: 33 · 2022: 26 · 2021: 22 · 2020: 8
FWCI
16.48
Type
journal article
Language
en
Open access
Locations
  • Electronics (publishedVersion, cc-by)
  • KTUePubl (Repository of Kaunas University of Technology) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Lithuanian University of Health Sciences (submittedVersion)
Funders
European Regional Development Fund (J05-LVPA-K-01-0232)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
  • Physical Sciences › Computer Science › Human-Computer Interaction › Virtual Reality Applications and Impacts
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
Keywords
virtual reality exposure therapy, mental stress detection, physiological signals, skin conductance, skin temperature, public speaking anxiety, signal fusion, support vector machine

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