A Novel Method for Stress Measuring Using EEG Signals
Stress is one of the major contributing factors which lead to various diseases including cardiovascular diseases. To avoid this, stress monitoring is very essential for clinical intervention and disease prevention. In present study, the feasibility of exp
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Abstract. Stress is one of the major contributing factors which lead to various diseases including cardiovascular diseases. To avoid this, stress monitoring is very essential for clinical intervention and disease prevention. In present study, the feasibility of exploiting Electroencephalography (EEG) signals to monitor stress in mental arithmetic tasks is investigated. This paper presents a novel hardware system along with software system which provides a method for determining stress level with the help of a Theta sub-band of EEG signals. The proposed system performs a signal-processing of EEG signals, which recognizes the peaks of the Theta sub-band above a certain threshold value. It finds the first order difference information to identify the peak. This proposed method of EEG based stress detection can be used as quick, noninvasive, portable and handheld tool for determining the stress level of a person. Keywords: Mental stress
Electroencephalography (EEG) Theta sub-band
1 Introduction An emotional disturbance or a change of environment which is caused by stress is basically termed as Stress. People suffer from stress in their daily life. Factors like biological, Social and psychological factors are affecting the human stress level. Stress can happen due to worrying, impaired judgment, negativity, loss of appetite, loss of confidence, headaches. Stress can also happen due to work pressure. Stress leads to mental disturbance as well as change in other functionalities of body parts specially heart [1, 2]. It is recognized that stress is one of the important criteria for causing chronic disorders and other such productivity losses. The performance of an individual, attitude towards life and wish to work is influenced by stress. Numerous health problems are linked by chronic stresses. Several research findings have shown a correlation between exposure of stress level and risk factors such as cardiovascular diseases [3]. Stress can be observed when people are engaged in doing challenging work, coping with a strained relationship or are engaged in an intense competition [4]. Many health problems are also related to stress [3, 4].
Research Grant support from: BIRAC GYTI, India. © Springer Nature Switzerland AG 2019 K. Arai et al. (Eds.): FICC 2018, AISC 887, pp. 671–684, 2019. https://doi.org/10.1007/978-3-030-03405-4_47
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V. Bairagi and S. Kulkarni
People working under high pressure at work or in life get depressed. The causes of mental stress are shown in Fig. 1.
Worrying
Loss of confidence
Mental Stress
Headaches
Negativity
Fig. 1. Causes of mental stress.
On the other hand, moderate stress is also needed to human because it helps to stay focused and alert as shown in Fig. 2. In such a case, stress can be a way to improve performance of an individual to achieve a success. Assessing and monitoring stress is a challenging task since everyone experiences stress. P e r f o r m a n c e
Max Performance
Moderate Stress
Min, Min
Stress level
Max
Fig. 2. Stress-performance curve.
A sign of stress can be
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