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Optical topography (OT) based on near infrared spectroscopy (NIRS) is useful for measuring changes in the concentrations of oxygenated hemoglobin (oxy-Hb) and deoxygenated hemoglobin (deoxy-Hb) in brain tissues non-invasively. Conventional OT systems limit subjects' ranges of movement to within the length of optical fibers these systems require for irradiating light on the scalp and detecting light...
We have developed a brain-machine interface (BMI) by using a method based on near-infrared spectroscopy. We call our interface ldquoOptical-BMIrdquo. It functions as a practical, unrestrictive, non-invasive brain-switch without the need for large equipment. During an experiment with the prototype system, an operator manipulated external electrically controlled equipment while we measured the corresponding...
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...
Many types of autostereoscopic displays have been developed. With these displays, users do not require any special glasses to view 3-D images, so they save users trouble and show 3-D images in a natural situation. We have been researching about an autostereoscopic display, which displays objects in 3-D as if they exist in the real world. We designed our display, which is based on integral photography...
The effects of ion substitution at rare earth sites and iron sites in garnet was studied to reduce crystallization temperature. Films formed using a Bi, Ga-substituted YIG target on various types of glass substrate were amorphous at low substrate temperatures. Crystallization occurred at around 660??C for a Bi-substitution amount in the range 1.2 to 1.4, but combining Bi-substitution amount over 2...
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