Measurement and Instrumentation for Mental Stress Detection in Humans

The paper reviews various techniques for detecting mental stress through physiological, psychological, and behavioral indicators. Stress, defined as an emotional tension leading to physical and psychological responses, can be categorized into acute and chronic forms, with diverse origins such as environmental, psychological, or physical. The paper emphasizes the importance of measuring stress using instruments like electrocardiograms (ECG), electroencephalograms (EEG), and galvanic skin response (GSR). Hormonal markers such as cortisol and adrenaline, alongside brain wave patterns, are also discussed as reliable stress indicators. While these traditional techniques offer accuracy, modern approaches such as thermal imaging for facial analysis combined with machine learning models are highlighted as promising tools for non-contact, real-time stress detection. Wearable devices integrated with sensor technology are further explored for their potential in personalized stress management solutions.