Developments, Applications and Subjects of Optical Topography

Atsushi MAKI, Takeshi OGINO, Masashi KIGUCHI
2012 The Review of Laser Engineering  
The human brain function measurement by light that applies near-infrared spectroscopy (NIRS) has accomplished rapid development in these 30 years. We developed the optical topography (OT) method to make an image of the brain activity by the multipoint measurement simultaneously based on NIRS (1995). OT has several features. 1) It can measure brain activity in the daily life naturally. 2) It can measure the brain activity only by putting on the optical fiber cap. 3) It can measure the neonatal
more » ... ain function because light level is safe for the baby brain. 4) The measurement signal can be used to know the autonomic nervous system. We have achieved the application to neurosurgery; the diagnosis of the epileptic focus and the dominant hemisphere for language. Moreover, we have found neonatal brain function concerning the language and sleep. Now, everyone can measure the brain function anytime and anywhere. It is expected to become an effective tool to the approach of a different research field and a new brain imaging. We need understanding of the meaning of the measurement signal, and to tie to new knowledge by the brain and the human function measurement in the future.
doi:10.2184/lsj.40.4_241 fatcat:qohlavyh2rebjcrwcfzmnhpagq