Physiology Effects When Wearing AP Fiber Cloth Containing Special Tourmaline Crystal Powder Author: Machi Y Affiliation: Tokyo Denki Univ. Dept. of Electronic Engineering (Tokyo, Japan) Conference/Journal: J Intl Soc Life Info Science Date published: 2001 Other: Volume ID: 19 , Issue ID: 2 , Pages: 69-72 , Word Count: 86 Physiology measurements were made to compare effects on the human body when wearing plain polyester cloth and polyester cloth made from fibers containing a special tourmaline powder (AP fibers). The clothing made from AP fibers was effective for heating the human body by a far infrared ray effect. It was understood that the parasympathetic nervous system became dominant based on changes of R point voltage of the EEG and also GSR data, and that the AP fiber had good effects on oxygen concentration and blood pressure.