Note: wearable near-infrared spectroscopy imager for haired region.
A wearable optical topography system was developed that is based on near-infrared spectroscopy (NIRS) for observing brain activity noninvasively including in regions covered by hair. An avalanche photo diode, high voltage dc-dc converter, and preamplifier were placed in an electrically shielded case to be safely mounted on the head. Rubber teeth and a glass rod were prepared to clear away hair and reach the scalp. These devices realized for the first time a wearable NIRS imager for any region of the cortex. The activity in the motor cortex during finger tapping was successfully observed.
Central Research Laboratory, Hitachi, Ltd., Hatoyama, Saitama 350-0395, Japan.
M
M
Kiguchi
H
H
Atsumori
I
I
Fukasaku
Y
Y
Kumagai
T
T
Funane
A
A
Maki
Y
Y
Kasai
A
A
Ninomiya
D000328:Adult; D001931:Brain Mapping / Q000295:instrumentation*; D006197:Hair; D006801:Humans; D057054:Molecular Imaging / Q000295:instrumentation*; D055620:Optical Phenomena; D013055:Spectrophotometry, Infrared / Q000295:instrumentation*