1. (1) J. L. Andreassi : “Psychophysiology: Human Behavior & Physiological Response, 5th ed.”, Psychology Press (2007)
2. (2) J. D. Enderle, S. M. Blanchard, and J. D. Bronzino : “Introduction to Biomedical Engineering, 2nd ed.”, Elsevier Academic Press (2005)
3. (3) J. A. Healey and R. W. Picard : “Detecting Stress During Real-World Driving Tasks Using Physiological Sensors”, IEEE Trans. on Intelligent transportation systems, Vol. 6, No. 2, pp. 156-166 (2005)
4. (4) H. Zenju, A. Nozawa, H. Tanaka, and H. Ide : “Estimation of Unpleasant and Pleasant States by Nasal Thermogram”, IEEJ Trans. on Electronics, Information and Systems, Vol. 124, No. 1, pp. 213-214 (2004) (in Japanese)
5. (5) S. Nomura, T. Mizuno, A. Nozawa, H. Asano, and H. Ide : “Salivary Cortisol as a Possible Physiological Biomarker for Mild Mental Workload”, Japanese Society of Biofeedback Research, Vol. 36, No. 1, pp. 22-32 (2009) (in Japanese)