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Headband‐Type Near‐Infrared Spectroscopy Device for Measuring Oxyhemoglobin in Frontal Cortex
Author(s) -
MIYAKE YASUHIRO,
HISAKA MASAKI,
KITA MITSUHIRO,
MATSUMURA MASAFUMI
Publication year - 2018
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.12029
Subject(s) - near infrared spectroscopy , biomedical engineering , computer science , medicine , optics , physics
SUMMARY Near‐infrared spectroscopy (NIRS) is an important technique that percutaneously and noninvasively monitors the changes in hemoglobin concentration of cerebral blood flow. We have developed headband‐type NIRS devices using a light‐emitting diode (LED) power source and a photodiode detector (PD) to reduce the burden in diagnosis preparation and the price of the NIRS module. The 10‐channel non‐real‐time headband‐type NIRS device with PD and one‐package three‐wavelength LED as well as the two‐channel real‐time wireless NIRS headband that is controlled using a tablet PC were manufactured in‐house. The two developed headband NIRS devices were evaluated using an existing LABNIRS system using a verbal fluency task, and they exhibited the same tendency with NIRS signals of the different levels at the rest and task stages. The measurement of the real‐time NIRS signals revealed that the voice and breath caused the source of low‐frequency fluctuations superimposed on the NIRS signals.