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Sensors 2018, 18(8), 2504; https://doi.org/10.3390/s18082504

Portable System for Real-Time Detection of Stress Level

1
Department of Computer Architecture and Technology, University of Granada, 18014 Granada, Spain
2
Research Centre for Information and Communications Technologies (CITIC), University of Granada, 18014 Granada, Spain
3
Department of Signal Theory, Telematics and Communications, University of Granada, 18014 Granada, Spain
4
Nicolo Association, 18194 Churriana de la Vega, Spain
5
School for Special Education San Rafael, 18001 Granada, Spain
*
Author to whom correspondence should be addressed.
Received: 30 June 2018 / Revised: 25 July 2018 / Accepted: 28 July 2018 / Published: 1 August 2018
(This article belongs to the Special Issue New Trends in Psychophysiology and Mental Health)
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Abstract

Currently, mental stress is a major problem in our society. It is related to a wide variety of diseases and is mainly caused by daily-life factors. The use of mobile technology for healthcare purposes has dramatically increased during the last few years. In particular, for out-of-lab stress detection, a considerable number of biosignal-based methods and systems have been proposed. However, these approaches have not matured yet into applications that are reliable and useful enough to significantly improve people’s quality of life. Further research is needed. In this paper, we propose a portable system for real-time detection of stress based on multiple biosignals such as electroencephalography, electrocardiography, electromyography, and galvanic skin response. In order to validate our system, we conducted a study using a previously published and well-established methodology. In our study, ten subjects were stressed and then relaxed while their biosignals were simultaneously recorded with the portable system. The results show that our system can classify three levels of stress (stress, relax, and neutral) with a resolution of a few seconds and 86% accuracy. This suggests that the proposed system could have a relevant impact on people’s lives. It can be used to prevent stress episodes in many situations of everyday life such as work, school, and home. View Full-Text
Keywords: stress; biosignal; EEG; ECG; EMG; GSR; real-time; healthcare; e-Health; m-Health stress; biosignal; EEG; ECG; EMG; GSR; real-time; healthcare; e-Health; m-Health
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Minguillon, J.; Perez, E.; Lopez-Gordo, M.A.; Pelayo, F.; Sanchez-Carrion, M.J. Portable System for Real-Time Detection of Stress Level. Sensors 2018, 18, 2504.

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