[1] McEwen, B.S. (2017) Neurobiological and Systemic Effects of Chronic Stress. Chronic Stress, 1, 2470547017692328.
[2] Liew, W.S., Seera, M., Loo, C.K., Lim, E. and Kubota, N. (2016) Classifying Stress from Heart Rate Variability Using Salivary Biomarkers as Reference. IEEE Transactions on Neural Networks and Learning Systems, 27, 2035-2046.
https://doi.org/10.1109/TNNLS.2015.2468721
[3] Hellhammer, D.H., Wust, S. and Kudielka, B.M. (2009) Salivary Cortisol as a Biomarker in Stress Research. Psycho-Neuro-Endocrinology, 34, 163-171.
https://doi.org/10.1016/j.psyneuen.2008.10.026
[4] Webster, J.G. (1997) Design of Pulse Oximeters. Series in Medical Physics and Biomedical Engineering. CRC Press.
https://doi.org/10.1887/0750304677
[5] Yuan, S., Nguyen, M.H., Blitz, P., French, B., Fisk, S., De La Torre, O., Smailagic, A., Siewiorek, D.P., Al Absi, M., Ertin, E., Kamarck, T. and Kumar, S. (2010) Personalised Stress Detection from Physiological Measurements, 2010. International Symposium on Quality of Life Technology Proceedings.
[6] Wijsman, J., Grundlehner, B., Liu, H., Hermens, H. and Penders, J. (2011) Towards Mental Stress Detection Using Wearable Physiological Sensors. Engineering in Medicine and Biology Society, EMBC, Annual International Conference of the IEEE, 1798-1801.
https://doi.org/10.1109/IEMBS.2011.6090512
[7] Yoon, S., Sim, J.K. and Cho, Y.-H. (2016) A Flexible and Wearable Human Stress Monitoring Patch. Scientific Reports, 6.
[8] Bassingthwaighte, J.B., Liebovitch, L.S. and West, B.J. (1994) Fractal Physiology. American Physiological Society: The American Physiological Society Methods in Physiology Series. American Physiological Society.
https://doi.org/10.1007/978-1-4614-7572-9
[9] Koolhaas, J.M., Bartolomucci, A., Buwalda, B., de Boer, S.F., Flugge, G., Korte, S.M., Meerlo, P., Murison, R., Olivier, B., Palanza, P., Richter-Levin, G., Sgoifo, A., Steimer, T., Stiedl, O., van Dijk, G., Wohr, M. and Fuchs, E. (2011) Stress Revisited: A Critical Evaluation of the Stress Concept. Neuroscience & Biobehavioral Reviews, 35, 1291-1301.
https://doi.org/10.1016/j.neubiorev.2011.02.003
[10] Kloucek, P., Zakharov, P. and von Gunten, A. (2016) The Compound Indexing of Human Self-Similar Behavioural Patterns. Journal of Applied Mathematics, 7, 2212-2228.
https://doi.org/10.4236/am.2016.717176
[11] Kloucek, P. and von Gunten, A. (2016) On the Possibility of Identifying Human Subjects Using Behavioural Complexity Analyses. Quantitative Biology, 4, 261-269.
https://doi.org/10.1007/s40484-016-0088-8
[12] Porges, S.W. (1992) Vagal Tone: A Physiologic Marker of Stress Vulnerability. Pediatrics, 90, 498-504.
[13] Lee, J., Hwang, Y., Cheon, K. and Jung, H. (2012) Emotion-on-a-Chip (eoc): Evolution of Bio Chip Technology to Measure Human Emotion Using Body Fluids. Medical Hypotheses, 79, 827-832.
https://doi.org/10.1016/j.mehy.2012.09.002
[14] Cicchetti, D. (2010) Resilience under Conditions of Extreme Stress: A Multilevel Perspective. World Psychiatry, 9, 145-154.
https://doi.org/10.1002/j.2051-5545.2010.tb00297.x
[15] Holden, J.G., Riley, M.A., Gao, J. and Torre, K. (2013) Fractal Analyses: Statistical and Methodological Innovations and Best Practices. Frontiers in Physiology, 4, 97.
https://doi.org/10.3389/fphys.2013.00097
[16] Van Ness, M. (1968) Fractional Brownian Motions, Fractional Noise and Application. SIAM Review, 10, 422-437.