Abstract
Moderate stress for people is said to raise their efficiency in work and study, but allowable stress strength depends on individuals who have their own differences and it depends on the stress type. Stress has often been considered to be bad as pointed out in the etiology of stress many years ago. However, in a modern society people cannot escape from various stressors, so the big question is how to get along with these stressors and still lead a healthy life. In this study, the biological response to two kinds of odors was measured over time through fingertip pulse waves, and the changes of the odor appearance for each subject were examined by wavelet analysis on the R-R interval of these fingertip pulse waves.
