Development of Portable Optical Topography System
Optical topography (OT) based on near infrared spectroscopy (NIRS) is suitable for measuring changes in the concentrations of oxygenated hemoglobin (oxy-Hb) and deoxygenated hemoglobin (deoxy-Hb) in tissue in the brain. It can be used to investigate brain functions of subjects of all ages because it is non-invasive and less constraining on subjects. Conventional OT systems require optical fibers to irradiate light on the scalp and detect light transmitted through the tissues in the human head, but optical fibers limit subjects movable ranges, so some portable measurement systems without optical fibers have been developed. We developed a prototype of a multi-channel portable OT system and used it to measure changes in the concentrations of oxy-Hb and deoxy-Hb in the frontal region of the cerebral cortex during a mental calculation. The results show typical changes in oxy-Hb and deoxy-Hb during a mental task and suggest that the prototype system can be used to investigate brain functions in the frontal region of the cerebral cortex.
optical topography NIRS portable
Hirokazu Atsumori Masashi Kiguchi Akiko Obata Hiroki Sato Takusige Katura Kei Utsugi Tsukasa Funane Atsushi Maki
Advanced Research Laboratory, Hitachi, Ltd., 2520 Akanuma, Saitama, 350-0395, Japan Systems Development Laboratory, Hitachi, Ltd., 1099 Ohzenji, Asao-ku, Kawasaki, Kanagawa 215-0013, J
国际会议
北京
英文
955-958
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）